Analysis and study of the effect of acupuncture on patients with different disturbance of consciousness using nonlinear dynamics of electroencephalography
10.3969/j.issn.1672-5921.2009.09.004
- Author:
Ying YUAN
1
Author Information
1. Department of Rehabilitation Medicine
- Publication Type:Journal Article
- Keywords:
Acupuncture points;
Consciousness disorders;
Electroencephalography;
Nonlinear dynamics
- From:
Chinese Journal of Cerebrovascular Diseases
2009;6(9):461-465
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To analyze and study the effect of acupuncture on patients with different disturbance of consciousness using nonlinear dynamics of electroencephalography (EEG). Methods: Thirty-seven patients with disturbance of consciousness within six months after stroke were enrolled in the study, of those, 16 patients were in a minimally conscious state (MCS), and 21 were in a persistent vegetative state (PVS). The acupuncture points Zusanli (ST36), Sanyinjiao (SP6), Taichong (LV3), and Yongquan (KI1) were stimulated by needles. The changes of nonlinear EEG indices (including complexity [Cx] and approximate entropy [ApEn]) in different brain regions (prefrontal, frontal, central, parietal, occipital, anterior temporal, middle temporal and post-temporal regions) in both groups were compared before and during acupuncture. Results: Circled digit oneAs compared to the nonlinear EEG indices before the acupuncture, the values of Cx and ApEn in the affected brain regions in the PVS group did not change significantly when acupuncturing the affected sides; and those in some affected brain regions in the MCS group were increased (P < 0.05). Circled digit twoAs compared to the nonlinear EEG indices before acupuncture, the values of Cx and ApEn in a small number of the unaffected brain regions in the PVS group were increased when acupuncturing the unaffected sides (P < 0.05), and those in the majority of unaffected brain regions in the MCS group were increased (P < 0.05, P < 0.01). Circled digit threeBefore acupuncture, there was no significant difference about the values of Cx and ApEn in all the affected brain regions between the PVS and MCS groups; when acupuncturing the points on the affected sides, there was no significant difference about the values of Cx in all the affected brain regions between the two groups, but the values of ApEn in the prefrontal, anterior temporal, middle temporal and post-temporal regions in the MCS group were higher than those in the PVS group (P < 0.05, P < 0.01). Circled digit fourBefore acupuncture, the values of Cx and ApEn in the majority of unaffected brain regions in the MCS group were higher than those in the PVS group (P < 0.05, P < 0.01); when acupuncturing the unaffected sides, the values of Cx and ApEn in all the unaffected brain regions in the MCS group were higher than those in the PVS group (P < 0.05, P < 0.01). Conclusion: The cortical activities in patients with PVS and MCS were obviously in an inhibitory state. The degree of cortical inhibition was relatively milder in patients with MCS than that in patients with PVS. Acupuncture may induce the excitability of the less injured cerebral cortex, and be caught by EEG nonlinear analysis.
