Marina Zettin | PubMed Health

PubMed2005

Effects of emotional face cueing on line bisection in neglect: a single case study.

One patient with left neglect (FM) and four right brain-damaged controls were tested on a line bisection task with pictures of neutral and emotional faces as unilateral cues. We thus manipulated the attentional salience of the cues (higher for emotional and lower for neutral faces) while keeping constant their physical dimensions. Our findings showed that left emotional faces were more effective than left neutral faces in reducing bisection errors only in FM. These data indicate that in the neglected hemispace cues bias attention rather than simply altering the perceptual point of balance of the line in the horizontal plane.

Aged↗

PubMed2004

Object-centred neglect for non-verbal visual stimuli.

In a first experiment, 11 neglect patients repeatedly bisected the elongated caricature of a basset hound with head on the right and tail on the left side with respect to the viewer. On the last (critical) trial, in which the figure was left-right reversed, the bisection error towards the ipsilesional side reversed its direction in three patients and significantly decreased in one patient. In a second experiment, 13 different neglect patients had to bisect the elongated caricature of the basset hound with head on the left and tail on the right side. On the last trial, the bisection error reversed its direction in three patients and significantly decreased in three patients. These results suggest that object-centred neglect (OCN) may affect newly established knowledge about the canonical orientation of a non-verbal visual stimulus.

Adult↗