ArticleHuman brain mapping2019
Neural mechanisms of vibrotactile categorization.
Article in Human brain mapping, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
6 citing papers in PubMed.
- Metamodal Coupling of Vibrotactile and Auditory Speech Processing Systems through Matched Stimulus Representations.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023Article
- From descriptive connectome to mechanistic connectome: Generative modeling in functional magnetic resonance imaging analysis.Frontiers in human neuroscience · 2022Review
- Low Cost MR Compatible Haptic Stimulation with Application to fMRI Neurofeedback.Brain sciences · 2020Article
- Neural mechanisms of vibrotactile categorization.Human brain mapping · 2019Article
- A Simple and Compact MR-Compatible Electromagnetic Vibrotactile Stimulator.Frontiers in neuroscience · 2019Article
- Representational Similarity Analysis for Tracking Neural Correlates of Haptic Learning on a Multimodal Device.IEEE transactions on hapticsArticle
Corrections and comments
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Authors and funding
13 authors.
Funding
Abstract
The grouping of sensory stimuli into categories is fundamental to cognition. Previous research in the visual and auditory systems supports a two-stage processing hierarchy that underlies perceptual categorization: (a) a "bottom-up" perceptual stage in sensory cortices where neurons show selectivity for stimulus features and (b) a "top-down" second stage in higher level cortical areas that categorizes the stimulus-selective input from the first stage. In order to test the hypothesis that the two-stage model applies to the somatosensory system, 14 human participants were trained to categorize vibrotactile stimuli presented to their right forearm. Then, during an fMRI scan, participants actively categorized the stimuli. Representational similarity analysis revealed stimulus selectivity in areas including the left precentral and postcentral gyri, the supramarginal gyrus, and the posterior middle temporal gyrus. Crucially, we identified a single category-selective region in the left ventral precentral gyrus. Furthermore, an estimation of directed functional connectivity delivered evidence for robust top-down connectivity from the second to first stage. These results support the validity of the two-stage model of perceptual categorization for the somatosensory system, suggesting common computational principles and a unified theory of perceptual categorization across the visual, auditory, and somatosensory systems.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.