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The effect of the cold pressor test on a visually evoked cerebral blood flowvelocity responseFabjan, Andrej, medicina, 1980- ...We investigated the hypothesis that during tonic pain stimulus, neurovascular coupling (NVC) decreases, measuring visually evoked cerebral blood flow velocity response (VEFR) during cold pressor test ... (CPT) in healthy human subjects as a test. VEFR was calculated as a relative increase in blood flow velocity in the posterior cerebral artery from average values during the last 5 s of the stimulus-OFF period to average values during the last 10 s of the stimulus-ON period. Three consecutive experimental phases were compared: basal, CPT and recovery. During CPT, end-diastolic and mean VEFR increased from 20.2 to 23.6% (p < 0.05) and from 17.5 to 20.0% (p < 0.05), respectively.In recovery phase, end-diastolic and mean VEFR decreased to 17.7%and 15.5%, respectively. Both values were statistically significantly different from CPT phase (p < 0.05). Compared with the basal phase, only end-diastolic VEFR was statistically significantly different in the recovery phase (p < 0.05). Our results are consistent with the assumption that there isa change in the activity of NVC during CPT because of the modulatory influence of subcortical structures activated during tonic pain. Contrary to our expectations, the combined effect of such influences increases rather thandecreases NVC.Source: Ultrasound in Medicine & Biology. - ISSN 0301-5629 (Vol. 38, no. 1, Jan. 2012, str. 13-20)Type of material - article, component part ; adult, seriousPublish date - 2012Language - englishCOBISS.SI-ID - 29112537
Author
Fabjan, Andrej, medicina, 1980- |
Musizza, Bojan |
Bajrović, Fajko |
Zaletel, Marjan, 1963- |
Štrucl, Martin
Topics
Cerebrovascular Circulation |
Blood Flow Velocity |
Evoked Potentials, Visual |
Temperature Sense |
Cold |
Cerebral Arteries |
Mraz |
Krvni pretok, hitrost |
Evocirani potenciali vidni |
Temperaturni čut |
Cerebrovaskularni obtok |
Možganske arterije
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Fabjan, Andrej, medicina, 1980- | 27577 |
Musizza, Bojan | 24269 |
Bajrović, Fajko | 15151 |
Zaletel, Marjan, 1963- | 11647 |
Štrucl, Martin | 09557 |
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