ArticleClinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology2015
Gamma activity modulated by naming of ambiguous and unambiguous images: intracranial recording.
Article in Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Naming-related spectral responses predict neuropsychological outcome after epilepsy surgery.Brain : a journal of neurology · 2022Trial
- Visualization of functional and effective connectivity underlying auditory descriptive naming.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2025Article
- Significance of event related causality (ERC) in eloquent neural networks.Neural networks : the official journal of the International Neural Network Society · 2022Article
- Left Prefrontal Cortex Supports the Recognition of Meaningful Patterns in Ambiguous Stimuli.Frontiers in neuroscience · 2020Article
- Four-dimensional functional cortical maps of visual and auditory language: Intracranial recording.Epilepsia · 2019Article
- Presurgical language mapping using event-related high-gamma activity: The Detroit procedure.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2018Review
- Dorsal Anterior Cingulate, Medial Superior Frontal Cortex, and Anterior Insula Show Performance Reporting-Related Late Task Control Signals.Cerebral cortex (New York, N.Y. : 1991) · 2017Article
- Cortical functional topography of high-frequency gamma activity relates to perceptual decision: an Intracranial study.PloS one · 2017Article
- Contribution of research on 'Epilepsy & behavior' to the refinement of functional brain atlas in four dimensions.Epilepsy & behavior : E&B · 2014Article
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
objectiveHumans sometimes need to recognize objects based on vague and ambiguous silhouettes. Recognition of such images may require an intuitive guess. We determined the spatial-temporal characteristics of intracranially-recorded gamma activity (at 50-120Hz) augmented differentially by naming of ambiguous and unambiguous images.
methodsWe studied 10 patients who underwent epilepsy surgery. Ambiguous and unambiguous images were presented during extraoperative electrocorticography recording, and patients were instructed to overtly name the object as it is first perceived.
resultsBoth naming tasks were commonly associated with gamma-augmentation sequentially involving the occipital and occipital-temporal regions, bilaterally, within 200ms after the onset of image presentation. Naming of ambiguous images elicited gamma-augmentation specifically involving portions of the inferior-frontal, orbitofrontal, and inferior-parietal regions at 400ms and after. Unambiguous images were associated with more intense gamma-augmentation in portions of the occipital and occipital-temporal regions.
conclusionsFrontal-parietal gamma-augmentation specific to ambiguous images may reflect the additional cortical processing involved in exerting intuitive guess. Occipital gamma-augmentation enhanced during naming of unambiguous images can be explained by visual processing of stimuli with richer detail. SIGNIFICANCE: Our results support the theoretical model that guessing processes in visual domain occur following the accumulation of sensory evidence resulting from the bottom-up processing in the occipital-temporal visual pathways.
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