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Abstract #3787

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

Boyi Qu1,2, Xiao Yu1,3, Kaiyue Wang1,2, Mengjie Xin1, and Hsin-Yi Lai2,4

1Interdisciplinary Institute of Neuroscience and Technology, Qiushi Academy for Advanced Studies, Zhejiang University, Hangzhou, China, 2College of Biomedical Engineering & Instrument Science´╝îZhejiang 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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