Abstract
Forehead blood flow was monitored in seven participants with a unilateral facial nerve
lesion during relaxation, respiratory biofeedback and a sad documentary. Vascular
waves at 0.1 Hz strengthened during respiratory biofeedback, in tune with breathing cycles that
also averaged 0.1 Hz. In addition, a psychomotor rhythm at 0.15 Hz was more prominent in vascular waveforms on the denervated than intact side of
the forehead, both before and during relaxation and the sad documentary. These findings
suggest that parasympathetic activity in the facial nerve interferes with the psychomotor
rhythm in the forehead microvasculature.
Keywords
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Article info
Publication history
Published online: July 18, 2011
Accepted:
June 15,
2011
Received in revised form:
April 23,
2011
Received:
October 27,
2010
Identification
Copyright
© 2011 Elsevier B.V. Published by Elsevier Inc. All rights reserved.
