Identifying the spatial frequency specific orientation aftereffect in the visual system

Hiran Perera-W.A.

doi:10.7287/peerj.preprints.27973v1

Identifying the spatial frequency specific orientation aftereffect in the visual system

Hiran Perera-W.A.

Department of Psychology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia

DOI: 10.7287/peerj.preprints.27973v1

Published: 2019-09-20
Accepted: 2019-09-20

Subject Areas: Neuroscience, Psychiatry and Psychology
Keywords: vision, spatial frequency, orientation aftereffect, low-level visual areas, LGN, visual cortex, V1, monoptic, visual stimulus, frequency-specific channels

Copyright: © 2019 Perera-W.A.
Licence: This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ Preprints) and either DOI or URL of the article must be cited.

Cite this article: Perera-W.A. H. 2019. Identifying the spatial frequency specific orientation aftereffect in the visual system. PeerJ Preprints 7:e27973v1 https://doi.org/10.7287/peerj.preprints.27973v1

Abstract

Previous studies have found that feature selectivity such as orientation and spatial frequency predominantly involves cortical mechanisms, and decades of research have identified the presence of orientation and spatial frequency-specific channels in the cortical region. Prolonged exposure to stimuli will generate an adapting aftereffect, thus reducing the neural sensitivity of those channels. Based on that notion, this research aims to identify whether the visual system encodes orientation variance independent of spatial frequency. Two experiments were conducted to assess the outcome of the study. In experiment 1, subjects viewed the stimuli with both eyes, and in experiment 2, stimuli were presented to one eye and viewed from the same or the contralateral eye. Results from both experiments indicated no interaction effect between spatial frequency and orientation aftereffect. Thus, supporting the experiments that orientation and spatial frequency are separately coded in the visual system.

Author Comment

This study attempts to identify how the low-level visual system works. This was a preliminary study and this preprint was submitted to PeerJ preprints.