ArticleExperimental brain research2019
Electrocorticographic changes in field potentials following natural somatosensory percepts in humans.
Article in Experimental brain research, 2019. 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.
- High-gamma electrocorticography activity represents perceived vibration intensity in human somatosensory cortex.medRxiv : the preprint server for health sciences · 2025Article
- Preclinical and translational models for delirium: Recommendations for future research from the NIDUS delirium network.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2023Review
- Dynamic cortical and tractography atlases of proactive and reactive alpha and high-gamma activities.Brain communications · 2023Article
- Utility and lower limits of frequency detection in surface electrode stimulation for somatosensory brain-computer interface in humans.Neurosurgical focus · 2020Article
- Power Modulations of ECoG Alpha/Beta and Gamma Bands Correlate With Time-Derivative of Force During Hand Grasp.Frontiers in neuroscience · 2020Article
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Authors and funding
8 authors.
Funding
Abstract
objectiveRestoration of somatosensory deficits in humans requires a clear understanding of the neural representations of percepts. To characterize the cortical response to naturalistic somatosensation, we examined field potentials in the primary somatosensory cortex of humans.
methodsFour patients with intractable epilepsy were implanted with subdural electrocorticography (ECoG) electrodes over the hand area of S1. Three types of stimuli were applied, soft-repetitive touch, light touch, and deep touch. Power in the alpha (8-15 Hz), beta (15-30 Hz), low-gamma (30-50 Hz), and high-gamma (50-125 Hz) frequency bands were evaluated for significance.
resultsSeventy-seven percent of electrodes over the hand area of somatosensory cortex exhibited changes in these bands. High-gamma band power increased for all stimuli, with concurrent alpha and beta band power decreases. Earlier activity was seen in these bands in deep touch and light touch compared to soft touch.
conclusionsThese findings are consistent with prior literature and suggest a widespread response to focal touch, and a different encoding of deeper pressure touch than soft touch.
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