Researchers compare circadian fluctuations in tactile sense/two-point discrimination in different individuals

Many previous chronobiological studies have reported on detection of circadian fluctuation in performing simple motor tasks, fine skilled movement, and anaerobic exercise.

However, to the best of our knowledge, literature concerning variation of sensory function according to the circadian cycle is lacking. Therefore, Yong Hyun Kwon and co-workers from Yeungnam University College of Science and Technology in Republic of Korea observed and compared the circadian fluctuations in tactile sense, joint reposition sense and two-point discrimination in 21 healthy adult subjects 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 have been published in the Neural Regeneration Research (Vol. 9, No. 4, 2014).

Article: "Circadian fluctuations in three types of sensory modules in healthy subjects" by Yong Hyun Kwon, Ki Seok Nam (Department of Physical Therapy, Yeungnam University College of Science and Technology, Hyunchung-ro, Nam-gu, Daegu, Republic of Korea)

Kwon YH, Nam KD. Circadian fluctuations in three types of sensory modules in healthy subjects. Neural Regen Res. 2014;9(4):436-439.

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