IDENTIFICATION OF NEURONES GIVING BURST RESPONSE IN ISOLATED CEREBRAL CORTEX

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Abstract
The cells which give the burst response of neurologically isolated cerebral cortex have been called Type-B cells (Burns and Grafstein, J. Physiol. 1952). An attempt was made to identify these cells histologically in the cortex of the cat. Physiological tests were used to find type-B cell somata while recording with a metal micro-electrode; a small quantity of Fe was then deposited by electrolysis in the vicinity of these cells for subsequent histological localization. Results show that the largest type-B cells have their somata in layer V although there are also some cells of this type throughout layers II, III and IV. The somata of type-B cells appear to be among the largest cell bodies to be found in any of these Layers. The only type-B cells in layer VI are close to its upper border.