listening to music primes space: pianists, but not novices, simulate heard actions
TRANSCRIPT
ORIGINAL ARTICLE
Listening to music primes space: pianists, but not novices,simulate heard actions
J. Eric T. Taylor • Jessica K. Witt
Received: 7 August 2013 / Accepted: 24 January 2014
� Springer-Verlag Berlin Heidelberg 2014
Abstract Musicians sometimes report twitching in their
fingers or hands while listening to music. This anecdote
could be indicative of a tendency for auditory-motor co-
representation in musicians. Here, we describe two studies
showing that pianists (Experiment 1), but not novices
(Experiment 2) automatically generate spatial representa-
tions that correspond to learned musical actions while lis-
tening to music. Participants made one-handed movements
to the left or right from a central location in response to
visual stimuli while listening to task-irrelevant auditory
stimuli, which were scales played on a piano. These task-
irrelevant scales were either ascending (compatible with
rightward movements) or descending (compatible with
leftward movements). Pianists were faster to respond when
the scale direction was compatible with the direction of
response movement, whereas novices’ movements were
unaffected by the scale. These results are in agreement with
existing research on action–effect coupling in musicians,
which draw heavily on common coding theory. In addition,
these results show how intricate auditory stimuli (ascend-
ing or descending scales) evoke coarse, domain-general
spatial representations.
Introduction
Music is the manifestation of action. To produce a piece of
music, a performer must complete a specific set of coor-
dinated movements. Given that the relationship between a
musician’s actions and the resultant sound is causal and
highly reliable, musical stimuli can convey information for
action. For example, an ascending C-major scale might
imply one sequence of hand postures, whereas a C-minor
scale might imply another. In this sense, listening to music
can be construed as observing an action. Typically, theories
of musical cognition emphasize the purely auditory and
esthetic processes involved in listening to music (Seashore,
1967; Hallam, Cross, & Thaut, 2009). However, a growing
literature demonstrates how the perception of action may
be a fundamental component of musical cognition (e.g.,
Molnar-Szakacs & Overy, 2006; Hodges, 2009; Alt-
enmuller & Schneider, 2009, Godøy & Leman, 2010).
Consistent with this idea, there is substantial evidence
supporting the notion that listening to music recruits cog-
nitive processes specialized for action. In this article, we
expand on this idea by demonstrating that complex audi-
tory musical stimuli—in this case, scales—can evoke
coarse spatial representations in trained pianists.
Co-representation of action and perception in musicians
The notion that perceiving music can employ the obser-
ver’s motor system has garnered empirical support from
neuroscience in recent years. In a MEG study, experienced
pianists exhibited increased activation in primary motor
cortex when listening to a piano piece, indicating that the
part of the brain responsible for controlling movements
became active while listening to music. Interestingly, this
J. E. T. Taylor (&)
Department of Psychology, University of Toronto,
100 St. George St, Toronto, ON M5S 3G3, Canada
e-mail: [email protected]
J. K. Witt
Colorado State University, Fort Collins, USA
123
Psychological Research
DOI 10.1007/s00426-014-0544-x
activation is localized to the portion of motor cortex that
controls the specific finger that would typically play the
heard note (Haueisen & Knosche, 2001). In an fMRI study,
contrasting observation of piano playing with observation
of serial finger-thumb movements revealed stronger acti-
vation in pre-motor cortex in pianists compared to novices
(Haslinger, Erhard, Altenmuller, Schroeder, Boecker, &
Ceballos-Baumann, 2005), suggesting that observing the
piano performance implicitly activated the musicians’
motor systems. And TMS disruption of pianists’ right
motor cortex interferes with the ability to coordinate with a
left-hand part in a learned performance; moreover, this
effect is exacerbated for individuals high in empathy
(Novembre, Ticini, Schutz-Bosbach, & Keller, 2013). This
effect suggests that pianists automatically represent heard
music using their own motor processes. If this is indeed the
case, then hearing music may interact with performing
music concurrently, as the internally and externally gen-
erated motor programs may overlap. Indeed, musicians
synchronize better with themselves than with recordings
made by other experts, because the internally generated
motor program and the externally (auditorily) activated
motor program align (Keller, Knoblich, & Repp, 2007).
The connection between perceptual and motor process-
ing in musicians is reciprocal: executing musical actions
induces activity in auditory cortex in violinists, even
without auditory feedback (Lotze, Scheler, Tan, Braun, &
Birbaumer, 2003). Moreover, the co-activation of auditory
and motor areas while listening to piano music can be
achieved in novices through training, suggesting that the
shared auditory and motor representation of music is
achieved through long hours of practice, rather than some
innate predilection for musicianship (Bangert & Alt-
enmuller, 2003; Lahav, Saltzman, & Schlaug, 2007).
These studies demonstrate that the brain areas involved
in perceiving music and performing music are co-activated
in musicians, but not novices. While this co-activation has
been taken as evidence that motor processes are a critical
component of musical cognition (e.g., Molnar-Szakacs &
Overy, 2006), it could also be argued that the implicit
motor activation is merely incidental to auditory and other
processes. In this view, motor processes become activated
while listening to music because the sounds are strongly
associated with the actions that can produce it, but the
motor processes have nothing to do with musical cognition
per se. In other words, it could be argued that the cognitive
processes engaged while listening to music could proceed
without any activity in motor processes (for a similar
skeptical evaluation of the role of embodied motor pro-
cesses in grounding abstract concepts, see Mahon &
Caramazza, 2008).
Perhaps the best evidence that motor processes can be a
constitutive component of musical cognition comes from
studies showing how musicians’ ability to play music is
impaired by the concurrent perception of incongruent
music. For example, when the task requires that partici-
pants respond by playing a given piano chord or interval,
hearing an incongruent chord or interval will slow reaction
times in pianists but not non-musicians (Drost, Rieger,
Brass, Gunter, & Prinz, 2005a, b). These effects generalize
to guitarists, and the compatibility effect between heard
and performed actions occurs only when listening to the
instrument with which the musicians have expert ability
(Drost, Rieger, & Prinz, 2007). These studies show how
perceiving music can influence the performance of musical
actions. This relationship suggests that, for musicians, the
perception of music necessarily involves the participation
of cognitive processes specialized for action.
If motor processes are part of, rather than strictly inci-
dental to musical cognition, the reverse should also be true:
performing musical actions should influence the perception
of music. Indeed, pianists are more likely to hear a per-
ceptually bistable pitch change (that is, a pair of sounds
equally likely to be perceived as increasing or decreasing in
pitch) as increasing if they are concurrently performing a
rightward action, and as decreasing if they are concurrently
performing a leftward action (Repp & Knoblich, 2007).
The direction of the action matters because pianists have
learned a strong association between space on the hori-
zontal plane and pitch: on a piano, leftward actions cor-
respond to decreasing pitch and rightward actions
correspond to increasing pitch. Importantly, novices are
equally likely to hear the bistable pitch change as
increasing or decreasing regardless of their concurrent
action, suggesting that learned and practiced associations
between action and perception are necessary for the effect
(Repp & Knoblich, 2007). Moreover, this effect is larger in
pianists than in non-pianist expert musicians, suggesting
that the effect depends on the learned ability to operate a
piano keyboard rather than some general musical expertise
(Repp & Knoblich, 2009). Together, these studies show
how action can alter the perception of music, supporting
the claim that motor processes can be involved in musical
cognition.
Mapping music to space
Action representations include the dimensions of space. So
it is unsurprising that, like action and music, space and
music share some representation as well. Consider the
metaphorical link between pitch and verticality; the tradi-
tion of Western music describes increasing or decreasing
pitch intensities as ‘‘higher’’ or ‘‘lower’’, respectively
(Eitan & Granot, 2006). This metaphor seems to reflect an
activation of spatial representations while observing
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123
different pitches. For example, higher pitches are localized
as occurring vertically higher on a scale (Pratt, 1930). This
association exists in one-year old infants, who associate
higher and low pitches with up and down arrows, respec-
tively, in a selective-looking task (Wagner, Winner, Cic-
chetti, & Gardner, 1981). In the SMARC effect, high or
low pitches can prime responses made to up or down
responses in novices (Rusconi, Kwan, Giordano, Umilta, &
Butterworth, 2006; Lidji, Kolinksy, Lochy, & Morais,
2007). These studies also reveal a horizontal association:
task-irrelevant high or low pitches can alter performance
for right or left responses, respectively. This horizontal
representation of pitch tends to occur only in musicians
(Rusconi et al., 2006; Lidji et al., 2007; Stewart, Walsh, &
Frith, 2004). Thus, the verticality of pitch seems relatively
common across the population, but the horizontal repre-
sentation of pitch seems to be limited to, or at least stronger
in musicians (although see Wuhr & Musseler, 2002).
Common coding in music
Studies demonstrating interactions between the perfor-
mance and perception of music converge on similar
explanations, borrowing from the theory of event coding
(Hommel, Musseler, Aschersleben, & Prinz, 2001). This
perspective holds that perceptual representations and action
plans are mutually represented by common distal features.
At the proximal level, perception and action are repre-
sented separately. Beyond proximal codes lie distal codes
or representations, which are more abstract. It is at the
distal level that action and perception share a common
representation. An object’s visual location, for example,
could be distally represented in common with a reaching
trajectory.
One consequence of common coding is the possibility of
reciprocal priming. Learned actions can prime their per-
ceptual consequents, and perceptual events can prime their
action antecedents. For example, reaching for a cup might
activate a visual representation of its handle’s location;
reciprocally, seeing a cup might prime a motoric repre-
sentation of the appropriate reaching trajectory (cf. Tucker
& Ellis, 1998).
Critically, for our purposes, is that common coding can
occur at a more abstract level such as the concept of ‘‘left’’
versus ‘‘right’’. If common coding is the underlying
mechanism for why simply listening to music evokes
corresponding motor representations, these priming effects
should be found not just for the specific actions that would
be required to produce the sounds (e.g., scales and inter-
vals; Drost et al., 2005a, b, 2007) but also for more general
actions that incorporate abstract features such as coarse
movements to the left or to the right.
However, this effect should only be evident in musi-
cians, whose experience coordinating action and perception
is extensive. Musicians develop strong integrated action–
effect associations between musical actions and the music
they produce. Over the course of their training, performing
musical actions and perceiving their musical effects both
result in the activation of common distal codes. This
bidirectional representation predicts reciprocal effects
between action and perception: When performing a musi-
cal action, expected musical outcomes are primed (e.g.,
Repp & Knoblich, 2007, 2009); when hearing music, the
corresponding motor antecedents are induced (e.g. Drost
et al., 2005a, b, 2007). These studies have demonstrated a
high degree of specificity in the reciprocal priming of
action and perception: The low-level properties of the
perceptual stimuli (e.g., the frequency spectrum of a note
played on piano) and the low-level features of the corre-
sponding action (e.g., which specific finger might play that
note) can be linked. However, if event coding can truly
account for the reciprocal action–effect associations in
musicians, then we should also expect a certain degree of
generality in these reciprocal effects. This generality would
be expressed in the reciprocal priming of more abstract
rather than more specific features of music and musical
action. For example, a musical scale played on piano (i.e.,
notes of different pitches played in succession) can be
perceptually categorized as either ascending or descending,
and the action that would perform those scales may at some
level contain a coarse spatial representation of either left or
right.
Thus, the purpose of this study is to advance the claim
that musicians represent musical actions and music with a
common code. We examined broad horizontal arm move-
ments, which have not previously been examined in the
context of spatial priming through music. In this study, we
asked whether hearing ascending or descending scales can
prime a corresponding spatial representation for these left
or right arm movements. Critically, such priming should
exist only for musicians, who have formed strong action–
effect associations between music and musical actions.
Such a finding would provide further evidence that musi-
cians’ action–effect associations are fundamentally
embodied through their ability to enact music.
Experiment 1
To examine whether music and musical actions evoke a
common code in musicians, we used an interference par-
adigm to assess whether hearing musical stimuli affects
performance of concurrent actions. If listening to music
necessarily involves the motor processes used to produce
music, then musicians’ performance of leftward or
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rightward hand actions should be impaired when listening
to incompatible scales, even if the scales are totally irrel-
evant to the task. First, we assessed trained pianists’ per-
formance in making broad left or right hand movements
while listening to ascending or descending scales. Because
ascending scales are always caused by rightward move-
ments and descending scales are always caused by leftward
movements,1 the scale and the action could be compatible
or incompatible. For example, hearing an ascending scale
should activate a representation of right space, which
should interfere with the execution of concurrent leftward
movements (e.g., Kilner, Paulignan, & Blakemore, 2003).
Method
Participants
Thirteen pianists (eight female; two left handed; age:
M = 21 years, SD = 4.10) participated for class credit or
monetary compensation. Pianists had a minimum of
9 years of formal training (M = 12.38 years, SD = 3.07,
range 9–20 years).
Materials and stimuli
The two visual stimuli consisted of black arrows 5 cm in
length facing left or right on a white background. The
auditory stimuli were one-octave scales in C major. The
scales could be either ascending or descending, starting
from either a low C (C2), a middle C (C4), or a high C
(C6), for a total of six different scales. The scales consisted
of eight notes each, and each lasted 4 s. Responses were
made on a standard computer keyboard. Red stickers were
placed on the three horizontally aligned keyboard buttons.
The left and right buttons were equidistant (9.6 cm) from
center.
Procedure
There were two stages to the experiment. First, participants
completed a baseline task designed to assess any differ-
ences in the speed of moving the arm to the contralateral or
ipsilateral side of the body in the absence of musical
stimuli. All responses were made with the index finger of
the active hand. The active hand, left or right, was blocked
in random order (henceforth, ‘‘active’’ refers to the hand
making responses in a given block). Participants initiated a
trial by pressing the center button, whereupon a black
arrow would appear at the center of the screen, pointing left
or right. The participants’ task was to press the button, left
or right, that corresponded to the direction of the arrow.
Thus, the movement required to make the appropriate
button response was a horizontal arm movement from the
center of the keyboard to either the left or the right button
position. Response time (RT) was measured as the time
from the onset of the visual stimuli to the response. Par-
ticipants completed 40 trials of this baseline task; 20 with
each hand.
The test phase of the experiment consisted of two blocks
of trials in random order, one for each hand. All responses
were made with the index finger of the active hand. Par-
ticipants initiated a trial by pressing the center button,
whereupon one of the six scales began to play through the
headphones (see Fig. 1). This task-irrelevant auditory
stimulus played for half of its duration (2 s) before a black
arrow, the task-relevant visual stimuli, appeared on the
display at a central position. The scale continued to play for
the rest of its duration (4 s total) or until the participant
made a response, followed by a 1 s inter-stimulus interval.
Participants were instructed to respond to the visual stimuli
by pressing the button that corresponded to the direction
the arrow was pointing. RT was measured as time from the
onset of the visual stimuli until time of response. Partici-
pants completed 240 trials; 10 for each combination of
hand (2), scale direction (2), scale pitch (3), and arrow
direction (2) Participants were instructed to respond as
1 Note that although a descending (ascending) scale must be played
with leftward (rightward) hand-finger movements, the arm move-
ments that precedes the scale is independent; a pianist might reach
rightward to initiate a descending scale, which would be performed
with leftward movements.
Fig. 1 Time course of a trial during the test phase. Participants began
a trial by pressing the center button with the index finger of the
specified hand. This initiated the auditory stimulus. Two seconds
later, when the scale was halfway complete, an arrow appeared at the
central location, indicating the correct response. Response time was
measured as the time between arrow onset and response at with the
index finger of the same hand. Thus, we measured the duration of a
leftward or rightward hand movement
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quickly as possible without making errors in both the
baseline and test phases.
Results and discussion
There was no effect of which hand was used to make the
responses (all Fs \ 0.47, ps [ 0.506), so subsequent
analyses were collapsed across this variable. In the test
phase of the experiment, pianists were faster to respond left
than right, F(1,12) = 5.38, p = 0.039, gp2 = 0.31. There
was no effect of scale direction, F(1,12) \ 0.01, p = 0.97.
Critically, there was an interaction between the direction of
pianists’ movements and the direction of the scale they
heard, F(1,12) = 8.67, p = 0.012, gp2 = 0.42 (see Fig. 2).
Post hoc comparisons of RT for ascending versus
descending scales for both response directions failed to
reach significance (right responses, ascending vs.
descending: t(12) = 1.62, p = 0.132; left responses,
ascending vs. descending: t(12) = 1.82, p = 0.095).
Although neither comparison reached significance on its
own, comparing the compatible (mean of ascending, right
response, and descending, left response) and incompatible
(mean of ascending, left response, and descending, right
response) conditions reveals a clear effect of compatibility:
t(12) = 2.95, p = 0.012, d = 1.13, indicating a strong
compatibility effect between the direction of response and
the direction of the scale.
In the baseline task, pianists tended to make leftward
responses (M = 685.46 ms, SD = 82.22) faster than
rightward responses (M = 703.47 ms, SD = 80.73),
although this comparison was only marginally significant,
t(12) = 1.86, p = 0.087. This trend may explain why
leftward responses were faster than rightward responses
during the test phase.
These results show that hearing musical stimuli interacts
with trained pianists’ concurrent movements. Specifically,
pianists were faster to make broad left or right arm
movements in the same direction as the movements
required to play the scales they heard. Participants were not
instructed to respond to the scales, so any effect of the
scales on their responses can be attributed to an automatic
link between perception and action (cf. Simon & Rudell,
1967). Furthermore, the data provide support that common
coding underlies this automatic link. Specifically, we pro-
pose that hearing ascending or descending scales covertly
activated corresponding motor antecedents, which in this
case would be a sequence of hand movements with a coarse
representation of left or right space. Based on previous
research, we would expect that listening to music would
evoke specific actions required to produce the sounds
(Drost et al., 2005a, b). Here, we tested if listening to the
music would also evoke more general actions, meaning
actions that contain more general features such as left
versus right. By showing that a general movement to the
left or to the right is affected by the playing of an ascending
or descending scale, the results are consistent with an
explanation based on common coding (Prinz, 1997).
Experiment 2
To support the claim that the compatibility effect observed
in Experiment 1 was due to interference between executed
actions and spatial representations automatically generated
by hearing music, it was essential to demonstrate no effect
in a novice sample using the same design. Novices would
have never practiced the ability to perform scales, and
should therefore not possess the integrated action–effect
coupling between music and action.
Method
Sixteen novices participated for course credit (Eleven
male; age: M = 19.00 years, SD = 1.00; 1 left handed).
Novices had never received any instruction in piano. The
apparatus and procedure were identical to Experiment 1.
Results and discussion
There was no effect of which hand was used to make the
responses (all Fs \ 1.60, ps [ 0.225), so subsequent
analyses were collapsed across this variable. In the baseline
task, there was no difference between novices leftward
Fig. 2 Mean response times for Experiment 1 as a function of
direction of response and direction of scale. Pianists were faster to
move in a direction compatible with the heard scale. For pianists,
rightward movements are compatible with ascending scales and
leftward movements are compatible with descending scales. Error
bars represent one within-subjects standard error of the mean
Psychological Research
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movements (M = 757.98 ms, SD = 96.00) and rightward
movements (M = 760.95, SD = 104.66; t(15) = 0.21,
p = 0.84). However, in the main phase of the experiment,
novices were faster to respond left than right,
F(1,15) = 11.72, p = 0.004, gp2 = 0.44. There was no
effect of scale direction, F(1,15) = 1.52, p = 0.24. Criti-
cally, there was no interaction between the direction of
novices’ movements and the direction of the scale they
heard, F(1,15) = 0.63, p = 0.44 (see Fig. 3).
Unlike expert pianists, complete novices showed no
interaction between the direction of their movement and
the direction of the scales they heard. Without the experi-
ence connecting a sequence of musical actions to their
consequent sounds, hearing scales cannot evoke a corre-
sponding spatial representation, explaining the lack of
compatibility effect.
Combining the results of both experiments into a single
ANOVA, with experiment (expertise) as a between-subjects
factor does not yield a significant three-way interaction
between response direction, scale direction, and experi-
ment, F(1,27) = 1.46, p = 0.237. Regardless, the claim at
the heart of this investigation is that pianists automatically
generate spatial representations corresponding to the heard
music, while novices do not. The critical result in support of
this claim is the observed interaction between response
direction and scale direction in experts. Pianists, but not
novices, responded faster when the direction of their
response was compatible with the heard scale.
General discussion
Experienced pianists automatically generated spatial rep-
resentations that correspond to learned musical actions
during auditory observation of music. In two experiments,
expert pianists and total novices listened to task-irrelevant
ascending or descending scales while making left or right
arm movements in response to a visual target. Given that
the piano is canonically designed such that the keys
increase in pitch from left to right, pianists have strong
associations between pitch and horizontal space. Leftward
movements are thus compatible with descending scales and
rightward movements are compatible with rightward
scales. Results showed that pianists, but not novices,
responded faster when the direction of their response was
compatible with the direction of the scale they heard.
We attribute this compatibility effect to competition
between spatial representations activated by the task-rele-
vant arrow and the task-irrelevant music. The perceptual
categorization of a scale as ascending or descending
involves the activation of a high-level perceptual feature.
At this abstract level, perception and action are represented
by common codes. Thus, hearing an ascending or
descending scale should activate the abstract features of
associated actions, such as a coarse representation of space
(left versus right). Because ascending and descending
scales are always played with right or left movements,
respectively, listening to ascending or descending scales
should also activate left or right space. When the scale and
arrow were compatible, movement proceeded without
interference. When they were incompatible, competing
representations of space (left and right) were activated, and
RTs were slowed. Critically, only the pianists in our study
had the experience necessary to connect the features of
scales and actions. These results, and other existing studies
(e.g., Droust et al. 2005a, b, 2007; Haueisen & Knosche,
2001; Haslinger et al., 2005) demonstrate that motor pro-
cesses are automatically activated during the auditory
observation of musical stimuli. In this sense, we argue that
listening to music can be construed as observing an action;
when pianists hear scales, it activates a corresponding
motor representation as though they were actually playing,
viewing, or imagining that same music.
It is well known that musicians exhibit a strong reci-
procal relationship between the production and perception
of musical actions (e.g., Drost et al., 2005a, b, 2007; Repp
& Knoblich, 2007, 2009). The argument advanced in the
present study extends on existing research on action–effect
coupling in musicians in that the described compatibility
effect was between more abstract, high-level features of the
stimuli and actions. If the theory of event coding can truly
account for action–effect coupling in pianists, then the
reciprocal relationship between hearing and performing
music should exist for both specific and abstract features of
the sound and the actions. Previous research has focused
primarily on reciprocal priming of very specific move-
ments (Drost et al., 2005a, b, 2007; Repp & Knoblich,
Fig. 3 Mean response times for Experiment 2 as a function of
direction of response and direction of scale. Unlike pianists, novices
displayed no compatibility effect. Error bars represent one within-
subjects standard error of the mean
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123
2007, 2009). Thus, our findings complement this research
by supporting the case for event coding as a likely expla-
nation for action–effect coupling in musicians. This study
is novel in that it examined the spatial priming through
music using a coarse arm movement. The finding that the
compatibility between music and space persists for
responses made with more general actions supports the
notion that common codes are at the heart of this
compatibility.
These findings are reminiscent of the spatial-musical
association of response codes (SMARC) effect, wherein
high or low pitch of auditory stimuli primes space (Rusconi
et al., 2006; also called spatial-pitch association of
response codes, or SPARC, Lidji et al., 2007). High pitches
primed up responses and low pitches primed down
responses in musicians and novices alike. Moreover, a
horizontal compatibility effect of high pitch with right
responses and low pitches with left responses was observed
in musicians. Our results are similar to the SMARC effect
in that they show how auditory stimuli can activate internal
representations of space that in turn affect motor perfor-
mance. Those studies also showed an effect of musical
training; while musical novices showed the vertical
SMARC effect, it was bigger in trained musicians. While
we also observed an effect of musical training, it is
important to note that novices display the SMARC effect,
whereas we found no effect of compatibility between
scales and space in novices. Scales are simple stimuli, and
any novice should be capable of identifying a scale as
ascending or descending in pitch. However, they lack the
experience connecting the auditory pattern of a scale to the
actions required to produce them. The compatibility effect
we observed is about more than the spatial representation
of pitch, or we should have observed the effect in novices;
scales are a sequence of pitches over time that imply
action. That action was lost on novices. In agreement with
our findings, Lidji et al. (2007) also report finding a com-
patibility effect between horizontal responses and musical
intervals increasing or decreasing in pitch in musicians but
not novices. Like scales, their interval stimuli are dynamic.
This is consistent with the perspective that a spatial-pitch
association of response codes exists in everyone, but a
spatial-musical association of response codes requires
musical training.
Our emphasis on the role of motor processes in the
observation of music places the present research within an
increasingly larger body of studies that examine how motor
processes are involved in the observation of many types of
art. For example, observing abstract paintings automati-
cally activates action representations corresponding to the
artist’s brushstrokes (Taylor, Witt, & Grimaldi, 2012; Le-
der, Bar, & Topolinski, 2012), and the observation of
sculpture and non-abstract paintings is similarly thought to
induce motor simulations of the depicted actions (Freed-
berg & Gallese, 2007). In dance, training for a novel dance
sequence leads to stronger simulations when observing that
dance, as measured with fMRI by increased activation in
brain areas known to represent both observed and executed
actions (Cross, Hamilton, & Grafton, 2006). Similarly,
expert dancers exhibit greater activation of mirror-system
areas while watching dancers in the style they have mas-
tered compared to an unfamiliar dance style (Calvo-Mer-
ino, Glaser, Grezes, Passingham, & Haggard, 2005). The
role of motor processes in the observation of art is thus
becoming an important idea in understanding the psy-
chology of many art forms.
Acknowledgments Jessica K. Witt was supported by a Grant from
the National Science Foundation (BCS-0957051).
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