دانلود مقاله ISI انگلیسی شماره 77626
عنوان فارسی مقاله

بررسی احساس متناقض دردناک ( 'خطای حسی درد') ایجادشده توسط یک کوره حرارتی

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
77626 2005 8 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
Investigation of the paradoxical painful sensation (‘illusion of pain’) produced by a thermal grill
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Pain, Volume 114, Issues 1–2, March 2005, Pages 160–167

کلمات کلیدی
سیستم های حسی؛ روان وتن؛ احساس حرارتی؛ درد، آلوداینیا
پیش نمایش مقاله
پیش نمایش مقاله بررسی احساس متناقض دردناک ( 'خطای حسی درد') ایجادشده توسط یک کوره حرارتی

چکیده انگلیسی

A paradoxical painful sensation can be elicited by the simultaneous application of innocuous warm and cold stimuli to the skin. In the present study, we analyzed the conditions of production of this unique experimental illusion of pain in 52 healthy volunteers (27 men, 25 women). The stimuli were produced by a thermode composed of six bars whose temperature was controlled by Peltier elements. The temperature of alternate (even- and odd-numbered) bars could be controlled independently to produce various patterns of the ‘thermal grill’. After measuring the cold and heat pain thresholds, a series of combinations of warm and cold stimuli, whose distance to the thermal pain threshold was at least 4 °C, were applied on the palmar surface of the right hand during 30 s. After each stimulus, the subjects had to describe and rate their sensations on visual analog scales. Paradoxical painful sensations, mostly described as burning, were reported by all the subjects but three. However, the phenomenon was less frequent in approximately one third of (‘low responder’) volunteers. The frequency and intensity of such painful sensations were directly related to the magnitude (i.e. 5–25 °C) of the difference of the temperature between the warm and cold bars of the grill. The combination of increasingly colder temperature to a given warm temperature induces similar effects as combining increasingly warmer temperature to a given cold temperature. These results suggest that pain can be the result of a simple addition of non-noxious warm and cold signals.

خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.