Title:
Parietal theta burst TMS: Functional fractionation observed during bistable perception not evident in attention tasks.
Authors:
Schauer G; Kanai R; Brascamp JW. Institution Schauer, Georg. Sackler Centre for Consciousness Science, University of Sussex, Brighton, Sussex, UK; Centre for Integrative Neuroscience, University of Tubingen, Tubingen, Germany.
Electronic address: georg.schauer@cin.uni-tuebingen.de. Kanai, Ryota. Sackler Centre for Consciousness Science, University of Sussex, Brighton, Sussex, UK; ARAYA Brain Imaging, Tokyo, Japan. Brascamp, Jan W. Department of Psychology, Michigan State University,East Lansing, MI, USA.
Title:
Parietal theta burst TMS: Functional fractionation observed during bistable perception not evident in attention tasks.
Source:
Consciousness & Cognition. 40:105-15, 2016 Feb.
Abstract:
When visual input is ambiguous, perception spontaneously alternates between interpretations: bistable perception. Studies have identified two distinct sites near the right intraparietal sulcus where inhibitory
transcranial magnetic stimulation (TMS) affects the frequency of occurrence of these alternations, but strikingly with opposite directions of effect for the two sites. Lesion and TMS studies on spatial and
sustained attention have also indicated a parcellation of right parietal cortex, into areas serving distinct attentional functions. We used the exact TMS procedure previously employed to affect bistable perception, yet measured its effect on spatial and sustained attention tasks. Although there was a trend for TMS to affect performance, trends were consistently similar for both parietal sites, with no indication of opposite effects. We interpret this as signifying that the previously observed parietal fractionation of function regarding the perception of ambiguous stimuli is not due to TMS-induced modification of spatial or sustained attention.
Copyright:P2016 Elsevier Inc. All rights reserved.
