RELATIONSHIPS BETWEEN SENSITIVITIES OF BLOOD-VOLUME CHANGE, PULSE-VOLUME CHANGE, AND THE GSR.
INDIANA UNIV BLOOMINGTON
Pagination or Media Count:
The records of 62 Ss run under a classical differential conditioning arrangement with shock as UCS and tones and lights as CS were measured in order to examine two assumptions a blood-volume BV and pulse-volume PV change are indices of the same autonomic process, and b they are equally sensitive. The former assumption was supported by the findings that the BV-PV intercorrelations were all higher than any of the correlations between either BV or PV and the GSR. The latter assumption was confirmed by the findings that BV and PV were equally effective in detecting a number of stimulus contrasts, when, as in the present study, the two measures were obtained from separately coupled tracings. The results, in addition to suggesting that the two plethysmographic measures are substitutable alternatives, also indicated that the GSR is a reliably more sensitive index of stimulation than either BV or PV. Author
- Anatomy and Physiology