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Decomposing the neural mechanisms of visual search through model-based analysis of fMRI: top-down excitation, active ignoring and the use of saliency by the right TPJ.

Abstract:

Despite being studied intensively over the past 30 years, the neural processes underlying visual search are not yet fully understood. In the current study we extend prior work using model-based analysis to decompose fMRI data. fMRI data on human search were assessed using activation functions predicted from the spiking Search over Time and Space model (sSoTS; Mavritsaki et al., 2006). Going beyond previous work, we show for the first time that activity in a central location map in the model, ...

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Publication status:
Published

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Institution:
University of Oxford
Department:
Oxford, MSD, Experimental Psychology
Role:
Author
Journal:
NeuroImage
Volume:
52
Issue:
3
Pages:
934-946
Publication date:
2010-09-05
DOI:
EISSN:
1095-9572
ISSN:
1053-8119
URN:
uuid:be038fe9-1d08-4cd0-a1a3-06ba9ba2590d
Source identifiers:
271619
Local pid:
pubs:271619

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