from the extracellular recording of single units in the monkey striate cortex and electrical stimulation at two selected sites in the optic radiations it was possible to estimate 1 ) the ordinal position of striate neurons ( i.e. , whether they received a monosynaptic , disynaptic or polysynaptic input from the thalamus ) and 2 ) the nature of the afferent input to these neurons ( i.e. , whether it came from the magnocellular or parvocellular subdivision of the lateral geniculate nucleus ( lgn ) ) .
C0039729
thalamus
C0086526
lateral geniculate nucleus