Neglect-like visual exploration behaviour after theta burst transcranial magnetic stimulation of the right posterior parietal cortex

Autor:	Mathias Lüthi, Dario Cazzoli, Thomas Nyffeler, Anouk Déruaz, Roman von Wartburg, Pascal Wurtz, René M. Müri, Silvia Chaves, Christian W. Hess
Rok vydání:	2008
Předmět:	Adult Male medicine.medical_specialty Eye Movements genetic structures media_common.quotation_subject medicine.medical_treatment Posterior parietal cortex Stimulation Audiology behavioral disciplines and activities Neglect Perceptual Disorders Parietal Lobe medicine Humans Theta Rhythm media_common General Neuroscience Eye movement Middle Aged Fixation (psychology) Transcranial Magnetic Stimulation Theta burst Transcranial magnetic stimulation Exploratory Behavior Visual Perception Right posterior Female Psychology Photic Stimulation Psychomotor Performance psychological phenomena and processes Cognitive psychology
Zdroj:	European Journal of Neuroscience. 27:1809-1813
ISSN:	1460-9568 0953-816X
DOI:	10.1111/j.1460-9568.2008.06154.x
Popis:	The right posterior parietal cortex (PPC) is critically involved in visual exploration behaviour, and damage to this area may lead to neglect of the left hemispace. We investigated whether neglect-like visual exploration behaviour could be induced in healthy subjects using theta burst repetitive transcranial magnetic stimulation (rTMS). To this end, one continuous train of theta burst rTMS was applied over the right PPC in 12 healthy subjects prior to a visual exploration task where colour photographs of real-life scenes were presented on a computer screen. In a control experiment, stimulation was also applied over the vertex. Eye movements were measured, and the distribution of visual fixations in the left and right halves of the screen was analysed. In comparison to the performance of 28 control subjects without stimulation, theta burst rTMS over the right PPC, but not the vertex, significantly decreased cumulative fixation duration in the left screen-half and significantly increased cumulative fixation duration in the right screen-half for a time period of 30 min. These results suggest that theta burst rTMS is a reliable method of inducing transient neglect-like visual exploration behaviour.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb47c236adde35e09807b2592f986cb0 https://doi.org/10.1111/j.1460-9568.2008.06154.x Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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