Categorization is modulated by transcranial direct current stimulation over left prefrontal cortex.

Cognition
Gary LupyanSharon L Thompson-Schill

Abstract

Humans have an unparalleled ability to represent objects as members of multiple categories. A given object, such as a pillow may be-depending on current task demands-represented as an instance of something that is soft, as something that contains feathers, as something that is found in bedrooms, or something that is larger than a toaster. This type of processing requires the individual to dynamically highlight task-relevant properties and abstract over or suppress object properties that, although salient, are not relevant to the task at hand. Neuroimaging and neuropsychological evidence suggests that this ability may depend on cognitive control processes associated with the left inferior prefrontal gyrus. Here, we show that stimulating the left inferior frontal cortex using transcranial direct current stimulation alters performance of healthy subjects on a simple categorization task. Our task required subjects to select pictures matching a description, e.g., "click on all the round things." Cathodal stimulation led to poorer performance on classification trials requiring attention to specific dimensions such as color or shape as opposed to trials that required selecting items belonging to a more thematic category such as object...Continue Reading

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Citations

Aug 27, 2015·Wiley Interdisciplinary Reviews. Cognitive Science·Andrea AntalLeila Chaieb
Jul 18, 2015·Topics in Cognitive Science·Gary Lupyan, Benjamin Bergen
Jan 6, 2016·The Quarterly Journal of Experimental Psychology : QJEP·Gary Lupyan
Nov 28, 2013·Cerebral Cortex·Flavia MengarelliGiuseppe di Pellegrino
Aug 1, 2012·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Gary Lupyan, Daniel Mirman
Jun 12, 2016·Brain Stimulation·Marilyne Joyal, Shirley Fecteau
Jun 11, 2016·Psychonomic Bulletin & Review·Eiling Yee, Sharon L Thompson-Schill
Aug 9, 2017·Frontiers in Human Neuroscience·Vincenza TarantinoAntonino Vallesi
Jul 4, 2017·Language, Cognition and Neuroscience·Benedikt Zoefel, Matthew H Davis
Jun 2, 2020·Cognitive Neuropsychology·Panos Athanasopoulos, Aina Casaponsa
Apr 21, 2017·Frontiers in Psychology·Marie C VerhageJos N van der Geest
May 21, 2019·Frontiers in Human Neuroscience·Steven E Davis, Glen A Smith
Feb 25, 2021·Cognitive, Affective & Behavioral Neuroscience·Yoed N KenettSharon L Thompson-Schill
Aug 2, 2017·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Jared Medina, Samuel Cason
Jun 19, 2021·Journal of Sport & Exercise Psychology·Joshua Gold, Joseph Ciorciari

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