In:
Journal of Neuroimaging, Wiley, Vol. 25, No. 4 ( 2015-07), p. 571-574
Abstract:
Cerebral vasomotor reserve (VMR) is the capability of cerebral arterioles to change their diameter in response to various stimuli, such hypercapnia. Changes of VMR due to transcranial direct current stimulation (tDCS) have been poorly studied. METHODS Twenty‐five healthy subjects underwent anodal/cathodal and sham tDCS on right primary motor area. Before and after tDCS, we assessed VMR by Transcranial Color‐Coded Sonography (TCCS) calculating trought Breath Holding Index (BHI) and Heart Rate Variability (HRV), in particular after Valsalva manouver. RESULTS A‐tDCS decreased VMR and BHI (p 〈 0.05), whereas C‐tDCS increased VMR, and BHI (p 〈 0.05); Sham doesn't provide statistically significant of both VMR, BHI and HRV (p 〉 0.05). CONCLUSIONS Our study confirms that tDCS induces a modification of bilateral VMR with a polarity‐specific effect; based on this bilateral MFV and BHI modifications, we can speculate an involvement of the SNS in the VMR regulation.
Type of Medium:
Online Resource
ISSN:
1051-2284
,
1552-6569
DOI:
10.1111/jon.2015.25.issue-4
Language:
English
Publisher:
Wiley
Publication Date:
2015
detail.hit.zdb_id:
2035400-9
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