A common oscillator for perceptual rivalries?

Carter, O. L. and Pettigrew, J. D. (2003) A common oscillator for perceptual rivalries?. Perception, 32 3: 295-305.


Author Carter, O. L.
Pettigrew, J. D.
Title A common oscillator for perceptual rivalries?
Journal name Perception   Check publisher's open access policy
ISSN 0301-0066
Publication date 2003
Sub-type Article (original research)
DOI 10.1068/p3472
Volume 32
Issue 3
Start page 295
End page 305
Total pages 11
Place of publication London, England
Publisher Pion Ltd
Collection year 2003
Language eng
Subject C1
730111 Hearing, vision, speech and their disorders
110906 Sensory Systems
111714 Mental Health
1117 Public Health and Health Services
1109 Neurosciences
Abstract Perceptual rivalry is an oscillation of conscious experience that takes place despite univarying, if ambiguous, sensory input. Much current interest is focused on the controversy over the neural site of binocular rivalry, a variety of perceptual rivalry for which a number of different cortical regions have been implicated. Debate continues over the relative role of higher levels of processing compared with primary visual cortex and the suggestion that different forms of rivalry involve different cortical areas. Here we show that the temporal pattern of disappearance and reappearance in motion-induced blindness (MIB) (Bonneh et al, 2001 Nature 411 798-801) is highly correlated with the pattern of oscillation reported during binocular rivalry in the same individual. This correlation holds over a wide range of inter-individual variation. Temporal similarity in the two phenomena was strikingly confirmed by the effects of the hallucinogen LSD, which produced the same, extraordinary, pattern of increased rhythmicity in both kinds of perceptual oscillation. Furthermore, MIB demonstrates the two properties previously considered characteristic of binocular rivalry. Namely the distribution of dominance periods can be approximated by a gamma distribution and, in line with Levelt's second proposition of binocular rivalry, predominance of one perceptual phase can be increased through a reduction in the predominance time of the opposing phase. We conclude that (i) MIB is a form of perceptual rivalry, and (ii) there may be a common oscillator responsible for timing aspects of all forms of perceptual rivalry.
Keyword Psychology
Psychology, Experimental
Binocular-rivalry
Vision
Competition
Cortex
Brain
Q-Index Code C1

 
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