On the Baseline Deflection of Plethysmogram in Depression and Neurosis

Autor: Matué Miyasaka, Tsutomu Higashimoto, Tadashi Ohtaka, Katsumi Mori
Rok vydání: 1978
Předmět:
Zdroj: Psychiatry and Clinical Neurosciences. 32:495-508
ISSN: 1440-1819
1323-1316
DOI: 10.1111/j.1440-1819.1978.tb00157.x
Popis: Summary 1) Plethysmograms taken during the resting state and during the mentally-stimulated state were studied comparatively among cases with endogenous depression, neurosis and normal subjects. The pulse wave amplitude, baseline deflection and change in the pulse wave form accompanying the baseline deflection were investigated in 34 cases of endogenous depression and 34 cases of neurosis, and compared with 16 normal subjects by using a photoelectric finger plethysmograph. 2) The subjects were classified into Group I-a (inhibitory type) and Group I-b (anxious type) in terms of depression, Group II-a (inhibitory type) and Group II-b (anxious type) in terms of neurosis, and Group III (normal subjects). 3) There were no specific differences in the features of the pulse wave form either at rest or after stimulation among the groups. 4) The pulse wave amplitude was decreased by stimulation in each group, and the recovery time was the shortest in cases of the inhibitory type of depression and the longest in cases of the anxious type of neurosis. 5) The baseline deflection was analyzed in terms of A wave (duration of 2 to 5 seconds), B wave (duration of 6 to 10 seconds), C wave (duration of 11 to 20 seconds), D wave (duration of 21 to 40 seconds), E wave (duration of 41 to 60 seconds) and F wave (duration of 61 seconds and over). In cases of the inhibitory type of depression, D wave was the most prominent at rest. D waves tended to appear more regularly after stimulation. In cases of the anxious type of neurosis, B wave appeared most frequently, and was increased by stimulation. 6) The features of the baseline deflection observed in Group I-a and II-b in the disease phase disappeared during a recovery period. The baseline deflection in those groups became similar to that of normal subjects both at rest and after stimulation. 7) With reference to the change in the pulse wave form accompanying the baseline deflection, the amplitude of the pulse wave was high at the hill stage and low at the valley stage of the D wave. The values of C‘Y’ (sweeling in the diastolic phase after incisura) showed a tendency to be high at the hill stage and low at the valley stage of the D wave. In cases of endogenous depression, the D wave tended to be a regular triangular form with steep upward and gentle downward slopes.
Databáze: OpenAIRE
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