The functional anatomy of inspection time: a pilot fMRI study

Citation
Ij. Deary et al., The functional anatomy of inspection time: a pilot fMRI study, INTELLIGENC, 29(6), 2001, pp. 497-510
Citations number
38
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Psycology
Journal title
INTELLIGENCE
ISSN journal
0160-2896 → ACNP
Volume
29
Issue
6
Year of publication
2001
Pages
497 - 510
Database
ISI
SICI code
0160-2896(2001)29:6<497:TFAOIT>2.0.ZU;2-H
Abstract
Seven healthy subjects underwent functional magnetic resonance imaging (MRI ) of the brain while performing an inspection time task. Employing a block- type design, the task had three difficulty levels: a control condition, an easy (200 ms stimulus duration), and a more difficult (40 ms) discriminatio n. Based on group results, there were widespread significant areas of diffe rence in brain activation and deactivation when pairwise comparisons were c onducted among the three task conditions. When the difficult condition was compared with the easy condition, there was relative activation in areas of the following brain regions: cingulate gyrus and some frontal and parietal lobe areas. Areas within the following regions showed relative deactivatio n (greater blood oxygenation level-dependent, BOLD, signal in the easy cond ition): frontal, temporal, and parietal lobe. There were overlaps between t hese areas and those found to be active while performing higher cognitive t asks in other functional brain imaging studies. These pilot data encourage future studies of the functional anatomy of inspection time and its relevan ce to psychometric intelligence. (C) 2001 Elsevier Science Inc. All rights reserved.