title: Circadian fluctuations in three types of sensory modules in healthy subjects.
abstract: This study was designed to observe and compare the circadian fluctuations in tactile sense, joint reposition sense and two-point discrimination in healthy subjects. Twenty-one healthy adult subjects received perceptual ability tests through these three different sensory modules at approximately 9:00, 13:00 and 18:00 in a day. The distribution of ranking for perceptual ability was significantly different among the three different time points in each individual, with highest perceptual ability in the evening compared with noon and morning, in terms of tactile sense and two-point discrimination. These findings suggest that the perceptual ability of healthy subjects fluctuates according to the time points in a day.
authors.affiliation: Department of Physical Therapy, Yeungnam University College of Science and Technology, Hyunchung-ro, Nam-gu, Daegu, Republic of Korea.
authors.forename: Yong Hyun
authors.initials: YH
authors.lastname: Kwon
authors.affiliation: Department of Physical Therapy, Yeungnam University College of Science and Technology, Hyunchung-ro, Nam-gu, Daegu, Republic of Korea.
authors.forename: Ki Seok
authors.initials: KS
authors.lastname: Nam
keywords: Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education Science and Technology; biological rhythm; circadian fluctuations; circadian pattern; joint reposition sense; nerve regeneration; neural regeneration; perceptual ability; tactile sensory; two-point discrimination