Thermal perception thresholds: reference data and response characteristics
(English)Manuscript (preprint) (Other academic)
Objective: To establish reference data for separate cold and warm perception thresholds at quantitative sensory testing with the method-of-limits at eight different body regions, and to evaluate the psychophysical response characteristics to consecutive cold and warm stimuli.
Methods: 75 healthy subjects were tested at the dorsum of the foot, the medial and lateral lower leg, the ventral thigh, the thenar eminence, the radial and ulnar part of the lower arm, and the anterior deltoid part of the upper arm. Thermal perception thresholds were assessed with the method of limits, and estimated from the average responses during ten consecutive cold and warm stimuli.
Results: At all tested sites, the TPT were significantly higher in the lower part of the body compared to the upper, and also the warm thresholds were significantly higher than the cold thresholds. Inconsistent correlations were noted between thermal perception thresholds and age or height, but thresholds at the dorsal foot were highly correlated with age.
Conclusions: Reference data from separate body regions in the lower and upper extremities are essential for adequate evaluation of thermal detection and perception capacity. At testing of thermal thresholds in individual subjects the thermal perception generally decreases distally in elderly and particularly in the lower extremities.
Cold perception thresholds, Method of limits, Reference data, Stimuli response characteristics, Warm perception thresholds
Research subject Clinical Neurophysiology
IdentifiersURN: urn:nbn:se:umu:diva-50586OAI: oai:DiVA.org:umu-50586DiVA: diva2:465391