Dent, Kevin and Allen, Harriet and Humphreys, Glyn W (2011) Comparing Segmentation by Time and by Motion in Visual Search: An fMRI Investigation. Journal of Cognitive Neuroscience, 23 (7). pp. 1710-1722. DOI https://doi.org/10.1162/jocn.2010.21531
Dent, Kevin and Allen, Harriet and Humphreys, Glyn W (2011) Comparing Segmentation by Time and by Motion in Visual Search: An fMRI Investigation. Journal of Cognitive Neuroscience, 23 (7). pp. 1710-1722. DOI https://doi.org/10.1162/jocn.2010.21531
Dent, Kevin and Allen, Harriet and Humphreys, Glyn W (2011) Comparing Segmentation by Time and by Motion in Visual Search: An fMRI Investigation. Journal of Cognitive Neuroscience, 23 (7). pp. 1710-1722. DOI https://doi.org/10.1162/jocn.2010.21531
Abstract
<jats:title>Abstract</jats:title> <jats:p>Brain activity was recorded while participants engaged in a difficult visual search task for a target defined by the spatial configuration of its component elements. The search displays were segmented by time (a preview then a search display), by motion, or were unsegmented. A preparatory network showed activity to the preview display, in the time but not in the motion segmentation condition. A region of the precuneus showed (i) higher activation when displays were segmented by time or by motion, and (ii) correlated activity with larger segmentation benefits behaviorally, regardless of the cue. Additionally, the results revealed that success in temporal segmentation was correlated with reduced activation in early visual areas, including V1. The results depict partially overlapping brain networks for segmentation in search by time and motion, with both cue-independent and cue-specific mechanisms.</jats:p>
Item Type: | Article |
---|---|
Uncontrolled Keywords: | Gyrus Cinguli; Cerebral Cortex; Visual Cortex; Parietal Lobe; Humans; Magnetic Resonance Imaging; Photic Stimulation; Mental Processes; Cues; Space Perception; Time Perception; Motion Perception |
Subjects: | B Philosophy. Psychology. Religion > BF Psychology |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Psychology, Department of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 28 Nov 2011 13:11 |
Last Modified: | 07 Aug 2024 18:31 |
URI: | http://repository.essex.ac.uk/id/eprint/1619 |
Available files
Filename: jocn.2010.pdf