Cite as:
Pantle A, Lehmkuhle S, Caudill M, 1978, "On the capacity of directionally selective mechanisms to encode different dimensions of moving stimuli" Perception 7(3) 261 – 267
Download citation data in RIS format

On the capacity of directionally selective mechanisms to encode different dimensions of moving stimuli

Allan Pantle, Steve Lehmkuhle, Michael Caudill

Received 24 May 1977, in revised form 5 December 1977

Abstract. Direction-specific losses of contrast sensitivity for sinusoidal test gratings as a function of the contrast of a sinusoidal adapting grating were found to be similar to those measured previously with square-wave gratings. Furthermore, both relationships were similar to that between motion aftereffect duration and the contrast of sinusoidal adapting gratings, and all three sets of data can be fit by a single function. The function shows that the magnitude of direction-specific adaptation effects increases linearly with the logarithm of adapting contrast in the low contrast region, but is essentially independent of contrast once the contrast exceeds threshold by more than a factor of five-six. In addition, it was found that direction-specific losses of contrast sensitivity are restricted to limited ranges of spatial frequency.

Restricted material:

 Full-text PDF size: 950 Kb

Your computer (IP address: 23.22.212.158) has not been recognised as being on a network authorised to view the full text or references of this article. This content is part of our deep back archive. If you are a member of a university library that has a subscription to the journal, please contact your serials librarian (subscriptions information).