Hemispheric asymmetry in memory for pictorial semantics in normal subjects. 1987

D W Zaidel
Department of Psychology, University of California, Los Angeles.

Effects of presence versus absence of semantic organization in pictorial scenes were investigated in a memory hemi-field tachistoscopic paradigm in order to assess the hemispheric status of long-term semantic memory (LTSM). Forty normal subjects were asked to remember a series of pictorial scenes which were organized either in common configurations or were unorganized with respect to real-world configurations. Memory for these scenes was measured by hemi-field presentations of detail probes and whole scene probes. The results showed that there were no differences between the two visual fields in accuracy scores. Latency of positive responses showed that memory for the common/organized scenes was better in the left (LVF) than in the right visual field (RVF) and a dissociation between the two types of pictorial organization was present only in the LVF, with the slower latencies for unorganized scenes. The effect of probe-type was also different in the two visual fields: detail and whole scene probes were undifferentiated within the LVF but were differentiated in the RVF, with whole scenes remembered more quickly. The findings are discussed in terms of asymmetries in storage/retrieval of schemata in LTSM.

UI MeSH Term Description Entries
D007839 Functional Laterality Behavioral manifestations of cerebral dominance in which there is preferential use and superior functioning of either the left or the right side, as in the preferred use of the right hand or right foot. Ambidexterity,Behavioral Laterality,Handedness,Laterality of Motor Control,Mirror Writing,Laterality, Behavioral,Laterality, Functional,Mirror Writings,Motor Control Laterality,Writing, Mirror,Writings, Mirror
D008297 Male Males
D008568 Memory Complex mental function having four distinct phases: (1) memorizing or learning, (2) retention, (3) recall, and (4) recognition. Clinically, it is usually subdivided into immediate, recent, and remote memory.
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014794 Visual Fields The total area or space visible in a person's peripheral vision with the eye looking straightforward. Field, Visual,Fields, Visual,Visual Field
D014796 Visual Perception The selecting and organizing of visual stimuli based on the individual's past experience. Visual Processing,Perception, Visual,Processing, Visual

Related Publications

D W Zaidel
January 1980, Neuropsychologia,
D W Zaidel
December 1999, International journal of psychophysiology : official journal of the International Organization of Psychophysiology,
D W Zaidel
January 1989, Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists,
D W Zaidel
January 1990, Annual review of psychology,
D W Zaidel
January 1978, Neuropsychologia,
D W Zaidel
April 1980, Perceptual and motor skills,
Copied contents to your clipboard!