Individual differences in parietal and frontal cortex structure predict dissociable capacities for perception and cognitive control

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Individual differences in parietal and frontal cortex structure predict dissociable capacities for perception and cognitive control

Eayrs, JO; Lavie, N; (2019) Individual differences in parietal and frontal cortex structure predict dissociable capacities for perception and cognitive control. Neuroimage , 202 , Article 116148. 10.1016/j.neuroimage.2019.116148. Green open access

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Abstract

Capacity limits in perception can lead to failures of awareness in situations that overload capacity, resulting in various phenomena of 'inattentional blindness'. In contrast, capacity limits in cognitive control over attention by working memory lead to increased processing of irrelevant distractors (reduced inattentional blindness). Here, using Voxel-Based Morphometry combined with Principal Components Analysis, we establish distinct brain-structural correlates of perceptual capacity, dissociable from those of cognitive control. Perceptual capacity was measured as the principal component accounting for variance across tasks of multiple object tracking, change blindness and rapid visual enumeration (i.e. 'subitizing'). Cognitive control capacity was measured as the principal component underlying performance of three different complex working memory span tasks (involving spatial, semantic and numerical domains). Volumetric differences in the right Inferior Parietal Lobule (IPL) were predictive of individual differences in perceptual capacity, while volumetric differences in left Middle Frontal Gyrus (MFG) (as well as lateral frontal and posterior cingulate cortex in a non-parametric analysis) were predictive of individual differences in cognitive control capacity. IPL remained a significant predictor of perceptual capacity when controlling for variance accounted for by cognitive control capacity and vice versa for the neural correlates of cognitive control. These results suggest that perceptual and cognitive control capacities represent dissociable and lasting, trait-like attributes which can be predicted from distinct signatures in regional grey matter.

Type:	Article
Title:	Individual differences in parietal and frontal cortex structure predict dissociable capacities for perception and cognitive control
Location:	United States
Open access status:	An open access version is available from UCL Discovery
DOI:	10.1016/j.neuroimage.2019.116148
Publisher version:	https://doi.org/10.1016/j.neuroimage.2019.116148
Language:	English
Additional information:	This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords:	Cognitive control, Individual differences, Perceptual capacity, Voxel based morphometry
UCL classification:	UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Institute of Cognitive Neuroscience
URI:	https://discovery.ucl.ac.uk/id/eprint/10081889