Neuronal Transmitters (s) having Layer 4 basket cells in cat visual cortex receive excitatory input from neighboring spiny neurons, resulting in large excitatory EPSPs. One third of spiny cell-smooth cell pair were connected reciprocally (postsynaptic targets include local spiny stellate, pyramidal cells, as well as smooth neurons), but the postsynaptic IPSPs evoked by basket cells are slower, GABAergic, probably of GABAA type as Publication facts