One patient with left spatial neglect (FM) and four right-brain damaged controls without neglect were tested on a line bisection task with pictures of neutral and emotional faces of the same size as unilateral cues. Our aim was to investigate whether bisection biases induced by cuing can be better explained as the result of a direct perceptual lengthening of the cued part of the line or, alternatively, because cues draw spatial attention thereby increasing the salience of that side. We thus manipulated the attentional salience of the cues (higher for emotional faces and lower for neutral faces) while keeping physical dimensions and perceptual characteristics of the stimuli constant. Our findings showed that left emotional faces were more effective than left neutral faces in reducing bisection errors in patient FM. These data indicate that in the left neglected hemispace cues bias attention rather than simply altering the perceptual point of balance of the line in the horizontal plane.

Emotional Faces Modulate Spatial Neglect: Evidence from Line Bisection

TAMIETTO, Marco;LATINI CORAZZINI, Luca;PIA, Lorenzo;GEMINIANI, Giuliano Carlo
2005

Abstract

One patient with left spatial neglect (FM) and four right-brain damaged controls without neglect were tested on a line bisection task with pictures of neutral and emotional faces of the same size as unilateral cues. Our aim was to investigate whether bisection biases induced by cuing can be better explained as the result of a direct perceptual lengthening of the cued part of the line or, alternatively, because cues draw spatial attention thereby increasing the salience of that side. We thus manipulated the attentional salience of the cues (higher for emotional faces and lower for neutral faces) while keeping physical dimensions and perceptual characteristics of the stimuli constant. Our findings showed that left emotional faces were more effective than left neutral faces in reducing bisection errors in patient FM. These data indicate that in the left neglected hemispace cues bias attention rather than simply altering the perceptual point of balance of the line in the horizontal plane.
27th Annual Conference of the Cognitive Science Society
Stresa
21-23 Luglio
Proceedings of the 26th Annual Conference of the Cognitive Science Society
Lawrence Erlbaum Associates
2151
2155
emotion; neglect; line bisection; cueing; attention; face processing
Tamietto M; Latini Corazzini L; Pia L; Zettin M; Gionco M; Geminiani G
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2318/19094
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