We conducted four experiments to test the effects of task difficulty and invested mental effort on peripheral vasoconstriction. Finger pulse wave amplitude was recorded from male undergraduatestudents by means of a newly developed finger plethysmographthat measures peripheral arterial tone (PAT) during both rest and cognitive performance. The difference in PAT amplitude between rest and task periods suggests that PAT amplitude reflects changes in sympathetic activity due to task engagement. As the demands of the task increase, PAT amplitude tends to decrease. Our results seem to suggest that peripheral vasoconstriction may be more sensitive to the amount of voluntary effort invested in task performance rather than to the objective task demands.

Effects of task difficulty and invested mental effort on peripheral vasoconstriction / Iani, Cristina; D. GOPHER, P. LAVIE. - In: SLEEP. - ISSN 0161-8105. - STAMPA. - 24:(2001), pp. 162-162. (Intervento presentato al convegno Fifteenth Annual Meeting of the Associated Professional Sleep Societies tenutosi a Chicago nel 5 - 10 giugno 2001).

Effects of task difficulty and invested mental effort on peripheral vasoconstriction

IANI, Cristina;
2001

Abstract

We conducted four experiments to test the effects of task difficulty and invested mental effort on peripheral vasoconstriction. Finger pulse wave amplitude was recorded from male undergraduatestudents by means of a newly developed finger plethysmographthat measures peripheral arterial tone (PAT) during both rest and cognitive performance. The difference in PAT amplitude between rest and task periods suggests that PAT amplitude reflects changes in sympathetic activity due to task engagement. As the demands of the task increase, PAT amplitude tends to decrease. Our results seem to suggest that peripheral vasoconstriction may be more sensitive to the amount of voluntary effort invested in task performance rather than to the objective task demands.
2001
24
162
162
Iani, Cristina; D. GOPHER, P. LAVIE
Effects of task difficulty and invested mental effort on peripheral vasoconstriction / Iani, Cristina; D. GOPHER, P. LAVIE. - In: SLEEP. - ISSN 0161-8105. - STAMPA. - 24:(2001), pp. 162-162. (Intervento presentato al convegno Fifteenth Annual Meeting of the Associated Professional Sleep Societies tenutosi a Chicago nel 5 - 10 giugno 2001).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/617276
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