ArticleHuman brain mapping2021
Hemodynamic response varies across tactile stimuli with different temporal structures.
Article in Human brain mapping, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Modality-general sensitivity of pupil responses to regularity violations.Cognitive, affective & behavioral neuroscience · 2026Article
- Functional lateralization of the medial temporal lobe in novel associative processing during creativity evaluation.Cerebral cortex (New York, N.Y. : 1991) · 2023Article
- Illusory Body Ownership Affects the Cortical Response to Vicarious Somatosensation.Cerebral cortex (New York, N.Y. : 1991) · 2022Article
- Hemodynamic response varies across tactile stimuli with different temporal structures.Human brain mapping · 2021Article
- Human Somatosensory Processing and Artificial Somatosensation.Cyborg and bionic systems (Washington, D.C.) · 2021Review
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Tactile stimuli can be distinguished based on their temporal features (e.g., duration, local frequency, and number of pulses), which are fundamental for vibrotactile frequency perception. Characterizing how the hemodynamic response changes in shape across experimental conditions is important for designing and interpreting fMRI studies on tactile information processing. In this study, we focused on periodic tactile stimuli with different temporal structures and explored the hemodynamic response function (HRF) induced by these stimuli. We found that HRFs were stimulus-dependent in tactile-related brain areas. Continuous stimuli induced a greater area of activation and a stronger and narrower hemodynamic response than intermittent stimuli with the same duration. The magnitude of the HRF increased with increasing stimulus duration. By normalizing the characteristics into topographic matrix, nonlinearity was obvious. These results suggested that stimulation patterns and duration within a cycle may be key characters for distinguishing different stimuli. We conclude that different temporal structures of tactile stimuli induced different HRFs, which are essential for vibrotactile perception and should be considered in fMRI experimental designs and analyses.
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