Accession Number:

AD0733648

Title:

Disturbances of Rod Threshold Forced by Briefly Exposed Luminous Lines, Edges, Disks and Annuli,

Descriptive Note:

Corporate Author:

TORONTO UNIV (ONTARIO) DEPT OF PHYSIOLOGY

Personal Author(s):

Report Date:

1970-08-17

Pagination or Media Count:

28.0

Abstract:

Relatively weak, brief illumination of the dark-adapted eye leads to a reduction of spatial integration and to other threshold changes that are attributable to lateral inhibition. A striking feature is that threshold disturbances do not extend much beyond the edges of the background pattern, despite the known extensiveness of spatial integration at the lowest intensities of rod vision. It is suggested that a possible model is one in which the response of the receptive field centre Gaussian line weighting function is divided by the response of the inhibitory surround bimodal line weighting function. The advantages and disadvantages of this approach are briefly indicated. Author

Subject Categories:

  • Psychology
  • Anatomy and Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE