Intracellular recordings were made in multimodal orbito-insular cortex in response to electrical stimulation of thalamic association nuclei. Four types of responses were observed: One was short latency excitation; another was short latency excitation followed by inhibition; the third was long latency inhibition followed by excitation; the fourth was rhythmic afterdischarge. The initial excitatory response is viewed as being due to direct thalamocortical input and the later inhibitory ones to intracortical inhibition. The results resemble those obtained in lemniscal systems having specific thalamic relay nuclei, and they provide correlates for recent anatomical reports concerning the projections of the frontal orbital cortex. © 1975.
Benevento, L. A., & Loe, P. R. (1975). An intracellular study of thalamocortical synapses in the orbito-insular cortex. Experimental Neurology, 46(3), 634–643. https://doi.org/10.1016/0014-4886(75)90131-4