the voice of emotion: an fmri study of neural responses to angry and happy vocal expressions
DESCRIPTION
The voice of emotion: an FMRI study of neural responses to angry and happy vocal expressions. Tom Johnstone , Carien M. van Reekum , Terrence R. Oakes , and Richard J. Davidson . By Andrew Kisch. Questions. - PowerPoint PPT PresentationTRANSCRIPT
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The voice of emotion: an FMRI study of neural responses to angry and
happy vocal expressions
Tom Johnstone, Carien M. van Reekum, Terrence R. Oakes, and
Richard J. Davidson
By Andrew Kisch
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Questions
• Are specific neural regions more engaged in the processing of some emotions than others?
• How does directed attention towards or away from the expressed emotion affect the associated neural response?
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Experiment
• Play happy/angry expressive speech for people while showing them greyscale images of happy/angry facial expressions– Both congruent and discrepant sets of emotions• AA, AH, HA, HH
• Monitor neurological activity via fMRI– Measures change in blood flow within the brain
• Also monitor skin conductance
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Congruent vs. Discrepant:Class Experiment
Say the color in which the word is written:
Congruent:
Discrepant:
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Congruent vs. Discrepant:Class Experiment
Now, try saying word itself:
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Congruent vs. Discrepant - Results
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Brushing up on the Brain – Part 1
• Middle Temporal Gyrus (MTG)– Involved in the processing of complex auditory
stimuli, including music, speech and emotional prosody
– Particularly vocal expressions of happiness– Particularly in the right hemisphere
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Brushing up on the Brain – Part 2
• Amygdala - Significance detector that alerts other parts of the brain to potentially salient stimuli
• Insula - Involved in generating reward-related autonomic responses
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MTG Activation
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Left Insula
Left Amygdala
Rostral ACC
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Questions For Discussion
• Why only right-handed subjects?• What is the best use of this data?• Why isn’t the lateralization consistent?• Improvements?
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Thank You!!!