FORM, FUNCTION, AND INTRACORTICAL PROJECTIONS OF NEURONS IN THE STRIATE CORTEX OF THE MONKEY MACACUS-NEMESTRINUS

Single neurons were recorded in the striate visual cortex (area 17) of the old-world monkey Macacus nemestrinus. Eight pyramidal neurons, se ven spiny stellate neurons, two basket cells, a clutch cell, and a cha ndelier cell were filled intracellulary with HRP. Their receptive fiel ds were consistent with previous single-unit studies. Their axonal arb ors were less elaborate than in equivalent neurons in the cat, but the laminar specificity of the boutons was very much more precise in the monkey then in the cat. Nevertheless, the basic cortical circuits in c at and monkey appear to be very similar.