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Models of Mania: An Individual Case Study

Published online by Cambridge University Press:  29 January 2018

D. R. Hemsley  and
H. C. Philips
D. R. Hemsley
Affiliation:
Institute of Psychiatry, University of London, De Crespigny Park, Denmark Hill, SE5 8AF
H. C. Philips
Affiliation:
Institute of Psychiatry, University of London, De Crespigny Park, Denmark Hill, SE5 8AF
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Summary

A longitudinal study of a single case of manic-depressive psychosis investigated the relationship between psychiatric ratings, reaction time and two measures of autonomic activity. Measurements were made on 19 occasions over a five-month period. The number of slow responses on the reaction time task increased with increasing depression. Manic periods appeared not to be characterized by a slowing of responses, but rather by an increase in the number of premature responses, i.e. those made to the warning signal. A derived performance index discriminated over the complete range from severe depression to severe mania.

Increased depression was associated with lower heart rate resting levels, and increasing mania with increased skin conductance levels. An increased frequency of slow reaction times was significantly associated with lower resting heart rate. Skin conductance measures correlated significantly with the number of premature responses made on the reaction time tasks. Some differences in the relationships emerged when data obtained during the administration of lithium were included in the analysis.

The results are discussed in relation to both the bipolar and the continuum models of manic-depressive psychosis. The latter model is not supported by the present investigation, since manic episodes were not characterized by a more severe departure from normality than depressive episodes on either the number of slowed responses or autonomic measures.

Type
Research Article
Information
The British Journal of Psychiatry , Volume 127 , Issue 1 , July 1975 , pp. 78 - 85
Copyright
Copyright © Royal College of Psychiatrists, 1975 

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