Transcranial Magnetic Theta-Burst Stimulation of the Human Cerebellum Distinguishes Absolute, Duration-Based from Relative, Beat-Based Perception of Subsecond Time Intervals

Frontiers in Psychology

Manon Grube¹ 

关键词: cerebellum;    transcranial magnetic theta-burst stimulation;    perception;    timing;    absolute;    relative;    duration;    beat;   

DOI  :  10.3389/fpsyg.2010.00171

学科分类：心理学（综合）

来源: Frontiers

【 摘 要 】

Cerebellar functions in two types of perceptual timing were assessed: the absolute (duration-based) timing of single intervals and the relative (beat-based) timing of rhythmic sequences. Continuous transcranial magnetic theta-burst stimulation (cTBS) was applied over the medial cerebellum and performance was measured adaptively before and after stimulation. A large and significant effect was found in the TBS (n = 12) compared to the SHAM (n = 12) group for single-interval timing but not for the detection of a regular beat or a deviation from it. The data support the existence of distinct perceptual timing mechanisms and an obligatory role of the cerebellum in absolute interval timing with a functional dissociation from relative timing of interval within rhythmic sequences based on a regular beat.

【 授权许可】

CC BY