Abstract #3787

7T functioanl MRI reveals frequency-dependent responses during vibrotactile stimulation at somatosensory cortex

Boyi Qu^1,2, Xiao Yu^1,3, Kaiyue Wang^1,2, Mengjie Xin¹, and Hsin-Yi Lai^2,4

¹Interdisciplinary Institute of Neuroscience and Technology, Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou, China, ²College of Biomedical Engineering & Instrument Science，Zhejiang University, Hangzhou, China, ³Department of Neurobiology, Zhejiang University School of Medicine, Hangzhou, China, ⁴The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China

To investigate whether the brain can directly encode different vibrotactile frequencies, we made a MR-compatible lab-designed vibrotactilestimulator to presented pulse stimuli on middle finger (with a frequency difference in the same duration) andusing BOLD fMRI to explore the effectsofvibrotactilefrequencyin somatosensory cortex with 7T MR research system. The results showedthat the lab-designed MR compatible vibrotactile stimulator could elicit BOLD responsesin the somatosensory cortex. Also, the BOLD response was frequency-dependent with the peak at 6Hz.

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