i conclude that ( a ) the major function of synaptic transmission between second- and third-order neurons of cockroach ocelli is to convert linear presynaptic signals into nonlinear ones and that ( b ) signal transmission at the synapse between second- and third-order neurons of cockroach ocelli fundamentally differs from that at the synapse between photoreceptors and second-order neurons of visual systems so far studied , where the synapse operates in the midregion of the characteristic curve and the transmission is essentially linear .
C0027793
synaptic transmission
C0027882
neurons