synergists share rich connections o Commissural connect neurons to the

Synergists share rich connections o commissural

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synergists share “rich” connections   o Commissural - connect neurons to the contralateral hemisphere Ex: corpus callosum and commissures  Development Cell migration: for the fetus  o in to out (layer VI migrate first) o thalamic sensory neurons attach to cortical neurons sensory + motor = sensorimotor integration (dependent on: genetic factors)
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o complete before birth Neural Exuberance: “all over the place”; projections to many areas o Pro - redundancy o Con - lacks precision Critical periods: an immature state of neural areas or projections; o Transformation- general connections become specific Regressive Events o Cell death- we lose about 50% of neurons during development o Axonal retraction o Synaptic retraction ***Activity*** o Neural Darwinism – “competition” Synapse strength, synaptic connections (wiring) (Forms neural networks) o Without activity- may lead to regressive events
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  • Spring '12
  • Campbell
  • pyramidal neurons, large pyramidal neurons, small/medium pyramidal neurons, thalamic sensory neurons

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