Spiny stellate neurones in layer VI of the rat cerebral cortex

Neuroreport
T Kaneko, N Mizuno

Abstract

From 109 neurones labelled intracellularly in layer VIa of rat neocortical slices, four non-pyramidal, spiny stellate neurones were identified by their common morphological characteristics. They had a small cell body and densely spiny dendrites extending radially, but no dominant apical dendrite. The main axons ran briefly to the pial surface, and then made a characteristic U-turn to descend toward the white matter. In immunofluorescence cytochemistry, all the spiny stellate neurones were immunopositive for glutaminase but not for calcium-binding proteins, suggesting that they were glutamatergic. Electrophysiologically, they belonged to the regular spiking type and showed a small fast afterhyperpolarization. Thus, the spiny stellate neurones were considered to represent a unique group of excitatory neurones in layer VI of the cerebral cortex.

References

Nov 9, 1968·Lancet·N D McGlashanA E McLean
Mar 15, 1968·International Journal of Cancer. Journal International Du Cancer·M Schonland, E Bradshaw

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