Question

The purkinje cell of the cerebellum adjusts synaptic output depending one whether inputs arriving from parallel fibers coincide with

1) Excitatory signals from the mossy fire tract

2) Error signals delivered by climbing fibers

3) Tissue damage relayed by nociceptors

4) "Simple spikes" communicating the current state of the body

Answer 1

Option 4 is correct. Simple spikes occurs when Purkinje cells are activated synaptically by parallel fibres where Purkinje cells adjust synaptic output.