Abstract:
:Electrical stimulation of the spinal tract of the trigeminal nerve at 5 Hz to elicit the trigeminal depressor response in anesthetized rabbits also causes an acute fall in ear pinna blood flow to near zero levels (from 31+/-8 to 2+/-2 kHz, n = 5, P < 0.01). This active vasoconstriction in the ear artery contrasts with the active vasodilation in femoral, renal and mesenteric arteries known to be part of the trigeminal depressor response. The selective vasoconstriction observed in the ear bed in response to noxious stimulation in anesthetized rabbits is similar to the vigorous acute vasoconstriction occurring in this cutaneous bed in conscious rabbits responding to salient environmental stimuli.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Yu YH,Blessing WWdoi
10.1016/s0304-3940(98)00717-4subject
Has Abstractpub_date
1998-10-23 00:00:00pages
172-4issue
3eissn
0304-3940issn
1872-7972pii
S0304-3940(98)00717-4journal_volume
255pub_type
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