The neuronal dynamics underlying cognitive flexibility in set shifting tasks.

The neuronal dynamics underlying cognitive flexibility in set shifting tasks. Research Abstract Details 

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The neuronal dynamics underlying cognitive flexibility in set shifting tasks. Abstract Text:

Anja Stemme,Gustavo Deco,Astrid Busch,Anja Stemme,Gustavo Deco,Astrid Busch,Anja Stemme,Gustavo Deco,Astrid Busch,

The ability to switch attention from one aspect of an object to another or in other words to switch the "attentional set" as investigated in tasks like the "Wisconsin Card Sorting Test" is commonly referred to as cognitive flexibility. In this work we present a biophysically detailed neurodynamical model which illustrates the neuronal base of the processes related to this cognitive flexibility. For this purpose we conducted behavioral experiments which allow the combined evaluation of different aspects of set shifting tasks: uninstructed set shifts as investigated in Wisconsin-like tasks, effects of stimulus congruency as investigated in Stroop-like tasks and the contribution of working memory as investigated in "Delayed-Match-to-Sample" tasks. The work describes how general experimental findings are usable to design the architecture of a biophysical detailed though minimalistic model with a high orientation on neurobiological findings and how, in turn, the simulations support experimental investigations. The resulting model is able to account for experimental and individual response times and error rates and enables the switch of attention as a system inherent model feature: The switching process suggested by the model is based on the memorization of the visual stimuli and does not require any synaptic learning. The operation of the model thus demonstrates with at least a high probability the neuronal dynamics underlying a key component of human behavior: the ability to adapt behavior according to context requirements--cognitive flexibility.

The neuronal dynamics underlying cognitive flexibility in set shifting tasks. Publishing Authors By Initials

A Stemme,G Deco,A Busch,A Stemme,G Deco,A Busch,A Stemme,G Deco,A Busch,

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The neuronal dynamics underlying cognitive flexibility in set shifting tasks. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Journal of computational neuroscience

VOLUME: 23

Page Numbers: 313-31

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ISSN: 0929-5313

DAY: 18

MONTH: 05

YEAR: 2007

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LANGUAGE: eng

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Grant and Affiliation Information for The neuronal dynamics underlying cognitive flexibility in set shifting tasks.

AFFILIATION: Department Psychologie, LMU Munich, Leopoldstr. 13, D-80802, Munich, Germany. stemme@psy.uni-muenchen.de

Country: United States

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MEDLINETA: J Comput Neurosci

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