Biomedical subjects
L F Petrinovich
Publications and source records attributed to L F Petrinovich.
Left-handedness and cognitive deficit.
Intellectual and performance measures were taken on 7688 school children tested on three behavioral measures of handedness and one measure of eyedness. Test results were compared against all combinations of handedness and eyedness and against a measure of socio-economic level. No relationships of any kind were found. Comparisons of the present results are made against 33 studies concerned with possible deficits associated with left-handedness. The results of the present study combined with a review of the majority of studies on deficit and handedness strongly suggest that the hypothesis of no difference in intellectual and cognitive performance between right- and left-handed subjects can be accepted as true.
Elephant seals: interspecific comparisons of vocal and reproductive behavior.
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Lack of coincidence between neural and behavioral manifestations of cortical spreading depression.
The presence of cortical spreading depression is typically inferred from the presence of hypesthesia. The electrocorticogram and slow-potential change were recorded during cortical spreading depression and it was found that hypesthesia remained long after the cortex recovered from neural depression. Hypesthesia, therefore, is an unreliable indicant of cortical spreading depression; if cortical spreading depression is used as a research tool, neural activity must be monitored. These data offer a special problem for memory transfer studies.
Feedback of speech muscle activity during silent reading.
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Feedback of speech muscle activity during silent reading: rapid extinction.
Surface electromyograms of the laryngeal muscles were made while subjects read silently. Those who showed an increase in electrical activity over that at relaxation were provided with auditory feedback of the muscle activity. This treatment resulted in immediate and long-lasting cessation of the subvocalazation. This method should prove valuable in treating some reading problems.
Neural consolidation and electroconvulsive shock reexamined.
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Effects of drugs on learning and memory.
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