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Basic Bits of Neuronal Grammar

Basic Bits of Neuronal Grammar. Friedemann Pulvermüller MRC Cognition and Brain Sciences Unit Cambridge. Activity states:. Ignition -- full activation, momentary Reverberation -- continuous enhanced activity following ignition Priming -- “parasitic” activity caused by strongly connected sets

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Basic Bits of Neuronal Grammar

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  1. Basic Bits of Neuronal Grammar Friedemann Pulvermüller MRC Cognition and Brain Sciences Unit Cambridge

  2. Activity states: • Ignition -- full activation, momentary • Reverberation -- continuous enhanced activity following ignition • Priming -- “parasitic” activity caused by strongly connected sets • Rest -- inactivity

  3. Activity states: • Darker colours denote reduced activity states

  4. The network:

  5. The represented elements: WORDS SEQUENCE FEATURES

  6. The representing elements: WORD WEBS

  7. The representing elements: WORD WEBS SEQUENCE DETECTORS (SDs)

  8. I3 word inputcongruent with thenetwork structure

  9. The sentence“Betty get up”will appear in the inputand will not be acceptedby the network

  10. Time step / Input / Process

  11. 0 -- All webs at rest

  12. 1 Betty Ignition of word web

  13. 2 -- Priming of SD

  14. 3 -- Priming of SD

  15. 4 -- Priming of word web

  16. 5 gets Primed ignition of word web

  17. 6 -- Priming of SDs Backward ignition

  18. 7 -- Priming of SDs Backward ignition

  19. 8 -- Priming of word web Backward ignition

  20. 9 -- --

  21. 10 up Ignition of word web

  22. 11 -- Backward ignition

  23. 12 -- Backward ignition

  24. 13 -- Backward ignition

  25. 14 -- Backward ignition

  26. 15 -- Backward ignition

  27. 16 -- Backward ignition

  28. 17 -- Backward ignition

  29. 18 -- Deactivation

  30. 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).

  31. II3 word inputincongruent with thenetwork structure

  32. The sentence“Up get Betty”will appear in the inputand will not be acceptedby the network

  33. Time step / Input / Process

  34. 0 -- All webs at rest

  35. 1 up Ignition of word web

  36. 2 -- --

  37. 3 -- --

  38. 4 get Unprimed ignition I^ of word web

  39. 5 -- Priming of SD Threshold regulation

  40. 6 -- Priming of SD

  41. 7 -- Priming of SD

  42. 8 Betty Unprimed ignition I^ of word web

  43. 9 -- Priming of SD Threshold regulation

  44. 10 -- Priming of SD

  45. 11 -- Priming of SD

  46. 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.

  47. III3 word inputpartlyincongruent with thenetwork structure

  48. The sentence“Up Betty get”will appear in the inputand will not be acceptedby the network

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