Differences in asymmetric perception of facial expression in Free-Vision Chimeric stimuli and reaction time

Two forms of a Chimeric Faces Free-Vision Task used to estimate cerebral asymmetry for perceiving facial expression were given to young male subjects, n = 60 in a first session and n = 40 in a retest session. Test-retest and split-half reliabilities were high. As expected from assumptions of right-hemisphere specialization for processing expression, faces with left-sided smiles were more frequently judged as looking happier than those with right-sided smiles in both forms. However, there were individual differences in direction and extent of bias, which were systematically related to reaction time, right visual field-biased subjects being slower. Differences in lateral bias as well as in reaction time are assumed to reflect individual patterns of hemispheric activation, whereas the average left bias in the present male group may reflect right-hemisphere specialization for processing of facial expression.

[1]  K. Heilman,et al.  Right hemispheric dominance for mediating cerebral activation , 1979, Neuropsychologia.

[2]  P Bakan,et al.  Visual asymmetry in perception of faces. , 1973, Neuropsychologia.

[3]  E. Baqué,et al.  Sex Differences and Eye Movements , 1983 .

[4]  F. Boller,et al.  Simple reaction time: evidence for focal impairment from lesions of the right hemisphere. , 1975, Brain : a journal of neurology.

[5]  R. C. Oldfield.  The assessment and analysis of handedness: the Edinburgh inventory. , 1971, Neuropsychologia.

[6]  Marie T Banich,et al.  Asymmetry of perception in free viewing of chimeric faces , 1983, Brain and Cognition.

[7]  D. Olweus,et al.  Testosterone, Aggression, Physical, and Personality Dimensions in Normal Adolescent Males , 1980, Psychosomatic medicine.

[8]  J. Mcglone,et al.  Sex differences in human brain asymmetry: a critical survey , 1980, Behavioral and Brain Sciences.

[9]  M. Banich,et al.  Are variations among right-handed individuals in perceptual asymmetries caused by characteristic arousal differences between hemispheres? , 1983, Journal of experimental psychology. Human perception and performance.

[10]  R. Gur,et al.  Sex differences in the relations among handedness, sighting-dominance and eye-acuity , 1977, Neuropsychologia.

[11]  S. Levander,et al.  Hand preference and sex as determinants of neuropsychological skill, solving strategy and side preference☆ , 1989 .

[12]  A. Benton,et al.  The neuropsychology of facial recognition. , 1980, The American psychologist.

[13]  S. Levander,et al.  Cognitive Sex Differences: Speed and Problem-Solving Strategies on Computerized Neuropsychological Tasks , 1987, Perceptual and motor skills.

[14]  M. Banich,et al.  Variations in patterns of lateral asymmetry among dextrals , 1984, Brain and Cognition.

[15]  R. G. Ley,et al.  Hemispheric differences in processing emotions and faces , 1979, Brain and Language.

[16]  Wendy Heller,et al.  Perception and expression of emotion in right-handers and left-handers , 1981, Neuropsychologia.

[17]  D. Schalling,et al.  Hand Preference in a Population of Swedish College Students , 1988, Cortex.