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The Encoding of Temporally Irregular and Regular Visual Patterns in the Human Brain

Zeki, S; Hulme, OJ; Roulston, B; Atiyah, M; (2008) The Encoding of Temporally Irregular and Regular Visual Patterns in the Human Brain. PLOS ONE , 3 (5) , Article e2180. 10.1371/journal.pone.0002180. Green open access

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Abstract

In the work reported here, we set out to study the neural systems that detect predictable temporal patterns and departures from them. We used functional magnetic resonance imaging (fMRI) to locate activity in the brains of subjects when they viewed temporally regular and irregular patterns produced by letters, numbers, colors and luminance. Activity induced by irregular sequences was located within dorsolateral prefrontal cortex, including an area that was responsive to irregular patterns regardless of the type of visual stimuli producing them. Conversely, temporally regular arrangements resulted in activity in the right frontal lobe (medial frontal gyrus), in the left orbito-frontal cortex and in the left pallidum. The results show that there is an abstractive system in the brain for detecting temporal irregularity, regardless of the source producing it.

Type: Article
Title: The Encoding of Temporally Irregular and Regular Visual Patterns in the Human Brain
Open access status: An open access version is available from UCL Discovery
DOI: 10.1371/journal.pone.0002180
Publisher version: http://dx.doi.org/10.1371/journal.pone.0002180
Language: English
Additional information: © 2008 Zeki et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Funded by the Wellcome Trust, London, UK. The Trust did not participate in any stage of the study.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Cell and Developmental Biology
URI: https://discovery.ucl.ac.uk/id/eprint/117571
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