CLUSTER ANALYSIS OF VISUAL CORTICAL RESPONSES EVOKED BY MOVING LINES

Authors
  1. Reinis, S.
  2. Landolt, J.P.
  3. Weiss, D.S.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);Waterloo Univ, Waterloo ONT (CAN) Dept of Psychology
Abstract
The cortical evoked responses to a bar of light (line) moving in 8 different directions across the visual field of 6 unanaesthetized, immobilized cats were compared in 18 experimental sessions. The shape of the response is unique for each direction. This is particularly apparent during the first 350 msec of the response. Cluster analysis of the evoked potentials reveals that the recognition of the direction of the moving line is probably less distinct when the line moves in a downward direction. This finding is more pronounced in the left hemisphere. The results of the cluster analysis indicate that the technique may be a useful tool in the analysis and classification of large numbers of evoked potentials. Furthermore, such clustering may eventually reveal some of the physiological mechanisms that contribute to the shape of the evoked response.
Report Number
84-P-07 — Research Paper
Date of publication
01 Jan 1984
Number of Pages
9
Reprinted from
Electroencephalography and Clinical Neurophysiology, vol 59, 1984, p 195-203
DSTKIM No
84-03516
CANDIS No
122596
Format(s):
Originator's fiche received by DSIS;Hardcopy

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