Showing 2 results for Autonomic Nervous System
Shima Chehreie, Ali Reza Jamshidi-Fard, Ali Haeri Rouhani,
Volume 6, Issue 1 (3-2003)
Abstract
Introduction: Sympathetic skin response (SSR) is a central, polysynaptic process which is attributed to sympathetic sudomotor activity. The descinding pathway presents spinal sympathetic system to sweat glands of hands and feets skin. The glands which are affected in reflex sympathetic dystrophy (RSD).
Materials and Methods: In present study, SSRs were recorded from left hands of 62 adult healthy subjects and 12 affected hands of RSD patients in relaxed, supine position at room temperature. Recording were performed by a pair of silver cup electrodes (1cm2) after stimulation of contralateral median nerve at volar aspect of wrist, all connected to a polygraph (physiograph, Narco, USA) to record at least five stimulation recording prosedure in each subject.
Results: Comparison of mean latency, amplitude, duraion and shape of responses in RSD 'patients with normal control group showed significant differences between duration and amplitudes (P=0.0007 and P=0.0001) while the latencies were not different and the shape of responses were mostly biphasic in both RSD and normal group.
Conclusion: Hyperactivities of SSRs in RSD patients are due to sudomotor changes of skin resistance, the SSR may also play a role in the quantitive evaluation of patients with suspected RSD.
Shima Chehreie, Bahman Salehi,
Volume 12, Issue 2 (9-2009)
Abstract
Background: Skin Sympathetic Response (SSR) is an electrophysiological technique and a central polysynaptic process. In mood disorders there are some changes in the cortex, hypothalamus activity, limbic system and basalganglia. Therefore, we compare the SSR changes in the patients with depression, mania and healthy persons. Methods and Materials: The patients with depression and mania were chosen based on DSM IV criterion by the psychiatrist. In cross-sectional analytic study, control group was selected away healthy men and women. The SSR was written by physiograph. The stimulat electrod was fixed on the middle finger of the left hand and 5 sympathetic responses were recored for every sample. The mean of amplitude, duration and latency time were computed and compared among three groups. Results: The mean of latency in control, mania and depressed groups were not statistically difference (p=.8). There were no difference between mean of duration in latency time in three groups. The mean of amplitude were not significant in three groups. Conclusion: It seems hypothalamus has not direct effect balance of sympathy skin responses.
