basic bits of neuronal grammar friedemann pulvermüller mrc cognition and brain sciences unit...
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Basic Bits of Neuronal Grammar
Friedemann Pulvermüller
MRC Cognition and Brain Sciences Unit Cambridge
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Activity states:
• Ignition -- full activation, momentary
• Reverberation -- continuous enhanced activity following ignition
• Priming -- “parasitic” activity caused by strongly connected sets
• Rest -- inactivity
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Activity states:
• Darker colours denote reduced activity states
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The network:
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The represented elements: WORDS
SEQUENCE FEATURES
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The representing elements:WORD WEBS
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The representing elements:WORD WEBS
SEQUENCE DETECTORS (SDs)
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I
3 word inputcongruent with thenetwork structure
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The sentence“Betty get up”
will appear in the inputand will not be accepted
by the network
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Time step / Input / Process
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0 -- All webs at rest
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1 Betty Ignition of word web
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2 -- Priming of SD
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3 -- Priming of SD
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4 -- Priming of word web
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5 gets Primed ignition ofword web
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6 -- Priming of SDsBackward ignition
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7 -- Priming of SDsBackward ignition
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8 -- Priming of word webBackward ignition
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9 -- --
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10 up Ignition of word web
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11 -- Backward ignition
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12 -- Backward ignition
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13 -- Backward ignition
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14 -- Backward ignition
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15 -- Backward ignition
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16 -- Backward ignition
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17 -- Backward ignition
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18 -- Deactivation
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At time step 17, the 3 criteria for string acceptance were met:
• All activated word webs were visible (i.e., reverberated at the highest reverberation level).
• All activate word webs were satisfied (i.e., their set of sequence detectors reverberated at a high level).
• All active sets were synchronized (I.e., participated in a continuous wave of ignitions).
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II
3 word inputincongruent with the
network structure
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The sentence“Up get Betty”
will appear in the inputand will not be accepted
by the network
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Time step / Input / Process
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0 -- All webs at rest
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1 up Ignition of word web
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2 -- --
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3 -- --
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4 get Unprimed ignition I^of word web
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5 -- Priming of SDThreshold regulation
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6 -- Priming of SD
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7 -- Priming of SD
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8 Betty Unprimed ignition I^of word web
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9 -- Priming of SDThreshold regulation
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10 -- Priming of SD
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11 -- Priming of SD
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At time step 10, the 3 criteria for string acceptance were not met:
• Only 1 word web was visible (the 2 others were at lower activity levels, R2 and R3; cf. darker colours).
• No one of the 3 word webs was satisfied (SDs did not reverberate).
• No final synchronization process.
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III
3 word input partly incongruent with the
network structure
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The sentence“Up Betty get”
will appear in the inputand will not be accepted
by the network
![Page 51: Basic Bits of Neuronal Grammar Friedemann Pulvermüller MRC Cognition and Brain Sciences Unit Cambridge](https://reader035.vdocument.in/reader035/viewer/2022062404/551bec6e550346c3588b636c/html5/thumbnails/51.jpg)
Time step / Input / Process
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0 -- All webs at rest
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1 up Ignition of word web
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2 -- --
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3 -- --
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4 Betty Unprimed ignition I^of word web
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5 -- Priming of SDThreshold regulation
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6 Betty Priming of SD
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7 -- Priming of word web
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8 get Primed ignition ofword web
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9 -- Priming of SDBackward ignition
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10 -- Priming of SDBackward ignition
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11 -- Backward ignition
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12 -- --
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At time step 12, not all of the 3 string acceptance criteria were met:
• 2 out of the 3 activated word webs were visible (i.e., reverberated at the highest reverberation level).
• Only 1 out of 3 word webs were satisfied (i.e., their set of sequence detectors reverberated at a high level).
• Only 2 out of the 3 word webs were synchronized (I.e., participated in a continuous wave of ignitions).