UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Modulation of spatial attention by fear-conditioned stimuli: an event-related fMRI study

Armony, JL; Dolan, RJ; (2002) Modulation of spatial attention by fear-conditioned stimuli: an event-related fMRI study. NEUROPSYCHOLOGIA , 40 (7) 817 - 826.

Full text not available from this repository.

Abstract

Stimuli that signal threat can capture subjects' attention, leading to more efficient detection of, and faster responses to, events occurring in that part of the environment. In the present study we explored the behavioural and anatomical correlates of the modulation of spatial attention by emotion using a fear conditioning paradigm, combined with a covert spatial orienting task. Reaction times for the detection of a peripheral target, which was preceded by brief (50 ms) presentations of the visual conditioned stimulus (CS+) in either the same or opposite visual field, showed an interaction between stimulus emotionality and attention shifts. We used event-related functional magnetic resonance imaging (fMRI) to characterise the associated neural responses. Consistent with previous studies, conditioning-induced enhanced responses were observed in the amygdala and extrastriate visual cortex. The modulation of spatial attention by a conditioned stimulus was associated with enhanced activity in regions of frontal and parietal cortices previously implicated in spatial attention, as well as in the lateral orbitofrontal cortex (IOFC). (C) 2002 Elsevier Science Ltd. All rights reserved.

Type: Article
Title: Modulation of spatial attention by fear-conditioned stimuli: an event-related fMRI study
Keywords: amygdala, fear conditioning, neuroimaging, orbitofrontal cortex, neurophysiology, POSTERIOR PARIETAL CORTEX, AUDITORY-CORTEX, LATERAL AMYGDALA, VISUOSPATIAL ATTENTION, ORBITOFRONTAL CORTEX, FACIAL EXPRESSIONS, PREFRONTAL CORTEX, NEURAL RESPONSES, VISUAL-ATTENTION, SPIKE TRAINS
UCL classification: UCL > School of Life and Medical Sciences
UCL > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > School of Life and Medical Sciences > Faculty of Brain Sciences > Institute of Neurology
UCL > School of Life and Medical Sciences > Faculty of Brain Sciences > Institute of Neurology > Imaging Neuroscience
URI: http://discovery.ucl.ac.uk/id/eprint/123622
Downloads since deposit
0Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item