ArticleHuman brain mapping2017
Separate spatial and temporal frequency tuning to visual motion in human MT+ measured with ECoG.
Article in Human brain mapping, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Superiority and characteristics of visual motion discriminability in collegiate table tennis players.Scientific reports · 2025Article
- Competing Visual Cues Revealed by Electroencephalography: Sensitivity to Motion Speed and Direction.Brain sciences · 2024Article
- Mechanisms of speed encoding in the human middle temporal cortex measured by 7T fMRI.Human brain mapping · 2023Article
- FMRI and intra-cranial electrocorticography recordings in the same human subjects reveals negative BOLD signal coupled with silenced neuronal activity.Brain structure & function · 2022Article
- Electrocorticography Evidence of Tactile Responses in Visual Cortices.Brain topography · 2020Article
- Cortical network responses map onto data-driven features that capture visual semantics of movie fragments.Scientific reports · 2020Article
- Correspondence between fMRI and electrophysiology during visual motion processing in human MT.NeuroImage · 2017Article
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Authors and funding
6 authors.
Funding
Abstract
The human middle temporal complex (hMT+) has a crucial biological relevance for the processing and detection of direction and speed of motion in visual stimuli. Here, we characterized how neuronal populations in hMT+ encode the speed of moving visual stimuli. We evaluated human intracranial electrocorticography (ECoG) responses elicited by square-wave dartboard moving stimuli with different spatial and temporal frequency to investigate whether hMT+ neuronal populations encode the stimulus speed directly, or whether they separate motion into its spatial and temporal components. We extracted two components from the ECoG responses: (1) the power in the high-frequency band (HFB: 65-95 Hz) as a measure of the neuronal population spiking activity and (2) a specific spectral component that followed the frequency of the stimulus's contrast reversals (SCR responses). Our results revealed that HFB neuronal population responses to visual motion stimuli exhibit distinct and independent selectivity for spatial and temporal frequencies of the visual stimuli rather than direct speed tuning. The SCR responses did not encode the speed or the spatiotemporal frequency of the visual stimuli. We conclude that the neuronal populations measured in hMT+ are not directly tuned to stimulus speed, but instead encode speed through separate and independent spatial and temporal frequency tuning. Hum Brain Mapp 38:293-307, 2017. © 2016 Wiley Periodicals, Inc.
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