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10. Neuronal Grammar

10. Neuronal Grammar. 뇌과학 협동과정 김태완. A1. Spontaneous changes of activity in set S. S(0,t) ⇛ S(0,t+1) S(I,t) ⇛ S(R 1 ,t+1) S(P i ,t) ⇛ S(0,t+1) S(R i ,t) ⇛ S(R i ,t+1) Refractoriness: If S(I,t), then S cannot ignite at t+1 or at t+2. Network dynamics property.

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10. Neuronal Grammar

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  1. 10. NeuronalGrammar 뇌과학 협동과정 김태완

  2. A1. Spontaneous changes of activity in set S • S(0,t) ⇛ S(0,t+1) • S(I,t) ⇛ S(R1,t+1) • S(Pi,t) ⇛ S(0,t+1) • S(Ri,t) ⇛ S(Ri,t+1) • Refractoriness: • If S(I,t), then S cannot ignite at t+1 or at t+2. • Network dynamics property

  3. A2. Activity change in an input unit S caused by external stimulation • S(0,t), S(E,t) ⇛ S(I^,t+1) • S(P1,t),S(E,t) ⇛ S(I,t+1) • S(Pi,t),S(E,t) ⇛ S(I^,t+1) • If i>1 • S(R1,t),S(E,t) ⇛ S(I,t+1) • S(Ri,t),S(E,t) ⇛ S(I^,t+1) • If i>1

  4. A3. Activity changes caused in Sq through a connection between Sp and Sq • Sp(I,t), Sq(Ri,t) ⇛ Sq(I,t+1) • Only if i=1 or 2 • Sp(I,t), Sq(0,t) ⇛Sq(P1,t+1) • Only if Sp ⇛ Sq • Sp(Ri,t), Sq(0,t) ⇛ Sq(Pi,t+1) • Only if Sp ⇛ Sq • Sp(Pi,t), Sq(0,t) ⇛ Sq(Pi, t+1) • Only if Sp ⇛ Sq and Sp is a sequence set

  5. A4. Activity changes caused in Sr through connections with Sp and Sq • Sp(I,t),Sq(I,t),Sr(0,t) ⇛ Sr(I,t+1) • Sp(I,t),Sq(Ri,t),Sr(0,t) ⇛ Sr(I,t+1) • Only if i=1 or 2 and Sq ⇛ Sr • Sp(I,t),S(Pi,t),Sr(0,t) ⇛ Sr(I,t+1) • Only if i=1 or 2, and Sq ⇛ Sr • Sq is a sequence set

  6. A5. Threshold Regulation • If a full Ignition I^ of an input unit happens at t, then for all reverberating S :S(Ri,t) ⇛ S(Ri+1, t+1) • If there is no ignition or reverberation at R1 at t, then – for all reverberating S:S(Ri,t) ⇛ S(Ri-1,t+1)

  7. A6. Inhibition between two lexical category representations α and β connected to an active input S that ignites or reverberates at R1: • Ignition of S can only S can spread to sets included in either α or β. The most strongly activated representation wins. • If one or more sets included in α but not in β ignite at t, then no set included in β and not included in α can exhibit I, P1, or R1 at t+1.

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