Circuitry


Folia

Climbing fibs.

Mossy fibs.

Inhibitory

Review

Problems


Contents

Anatomy

 

 

LET'S REVIEW

  1. all cerebellar inputs are excitatory
  2. mossy fibers=DSCT, CCT, PCT and VCT--terminate (excite) on granule cells
  3. climbing fibers=OCT-terminate (excite) directly Purkinje cells (by-passes granule), cause complex spikes in Purkinje cell
  4. granule cell is only excitatory cell in the cerebellar cortex-terminates (excites) on Golgi, basket and Purkinje cells--results in simple spikes in Purkinje cells (50-100/sec)
  5. Purkinje, Golgi and basket cells are all inhibitory
  6. basket=feedforward inhibition on Purkinje cells
  7. Golgi=feedback inhibition on mossy fiber-granule cell relay
  8. mossy and climbing fiber collaterals to the deep cerebellar nuclei are excitatory