The Depth Distribution of Optimal Stimulus Orientations for Neurones in Cat Area 17

Overview

Journal Exp Brain Res

Specialty Neurology

Date 1977 Mar 30

PMID 880986

Citations 13

Authors

B B Lee

K Albus

P Heggelund

M J Hulme

O D CREUTZFELDT

Affiliations

Soon will be listed here.

Abstract

Neurones recording during penetrations through cat area 17 as near parallel to the radial fibre bundles as possible have been quantitatively tested as to their optimal orientation. Optimal orientation within any one penetration was similar though considerable variability was observed. Histological reconstruction and other considerations showed that this variability could not be attributed to poor penetration angle or limitations of the microelectrode technique. These results confirm that neurones with similar optimal orientations are found in all cortical layers at one cortical locus, but it is difficult to reconcile the variability observed with a mosaic-like distribution of orientation across the cortical surface. The findings were consistent, however, with the assumption of a continuous distribution of orientation sensitivity across the cortical surface with considerable superimposed scatter.

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