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Schuurmans JP, Bennett MA, Petras K, Goffaux V. Backward masking reveals coarse-to-fine dynamics in human V1. Neuroimage 2023; 274:120139. [PMID: 37137434 DOI: 10.1016/j.neuroimage.2023.120139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 04/20/2023] [Accepted: 04/26/2023] [Indexed: 05/05/2023] Open
Abstract
Natural images exhibit luminance variations aligned across a broad spectrum of spatial frequencies (SFs). It has been proposed that, at early stages of processing, the coarse signals carried by the low SF (LSF) of the visual input are sent rapidly from primary visual cortex (V1) to ventral, dorsal and frontal regions to form a coarse representation of the input, which is later sent back to V1 to guide the processing of fine-grained high SFs (i.e., HSF). We used functional resonance imaging (fMRI) to investigate the role of human V1 in the coarse-to-fine integration of visual input. We disrupted the processing of the coarse and fine content of full-spectrum human face stimuli via backward masking of selective SF ranges (LSFs: <1.75cpd and HSFs: >1.75cpd) at specific times (50, 83, 100 or 150ms). In line with coarse-to-fine proposals, we found that (1) the selective masking of stimulus LSF disrupted V1 activity in the earliest time window, and progressively decreased in influence, while (2) an opposite trend was observed for the masking of stimulus' HSF. This pattern of activity was found in V1, as well as in ventral (i.e. the Fusiform Face area, FFA), dorsal and orbitofrontal regions. We additionally presented subjects with contrast negated stimuli. While contrast negation significantly reduced response amplitudes in the FFA, as well as coupling between FFA and V1, coarse-to-fine dynamics were not affected by this manipulation. The fact that V1 response dynamics to strictly identical stimulus sets differed depending on the masked scale adds to growing evidence that V1 role goes beyond the early and quasi-passive transmission of visual information to the rest of the brain. It instead indicates that V1 may yield a 'spatially registered common forum' or 'blackboard' that integrates top-down inferences with incoming visual signals through its recurrent interaction with high-level regions located in the inferotemporal, dorsal and frontal regions.
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Affiliation(s)
- Jolien P Schuurmans
- Psychological Sciences Research Institute (IPSY), UC Louvain, Louvain-la-Neuve, Belgium.
| | - Matthew A Bennett
- Psychological Sciences Research Institute (IPSY), UC Louvain, Louvain-la-Neuve, Belgium; Institute of Neuroscience (IONS), UC Louvain, Louvain-la-Neuve, Belgium
| | - Kirsten Petras
- Integrative Neuroscience and Cognition Center, CNRS, Université Paris Cité, Paris, France
| | - Valérie Goffaux
- Psychological Sciences Research Institute (IPSY), UC Louvain, Louvain-la-Neuve, Belgium; Institute of Neuroscience (IONS), UC Louvain, Louvain-la-Neuve, Belgium; Maastricht University, Maastricht, the Netherlands
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Creupelandt C, Maurage P, Bocanegra B, Szaffarczyk S, de Timary P, Deleuze J, Lambot C, D'Hondt F. Spatial frequency processing and its modulation by emotional content in severe alcohol use disorder. Psychopharmacology (Berl) 2022; 239:2647-2657. [PMID: 35524008 DOI: 10.1007/s00213-022-06158-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 04/27/2022] [Indexed: 11/30/2022]
Abstract
RATIONALE Visuo-perceptive deficits in severe alcohol use disorder (SAUD) remain little understood, notably regarding the respective involvement of the two main human visual streams, i.e., magnocellular (MC) and parvocellular (PC) pathways, in these deficits. Besides, in healthy populations, low-level visual perception can adapt depending on the nature of visual cues, among which emotional features, but this MC and PC pathway adaptation to emotional content is unexplored in SAUD. OBJECTIVES To assess MC and PC functioning as well as their emotional modulations in SAUD. METHODS We used sensitivity indices (d') and repeated-measures analyses of variance to compare orientation judgments of Gabor patches sampled at various MC- and PC-related spatial frequencies in 35 individuals with SAUD and 38 matched healthy controls. We then explored how emotional content modulated performances by introducing neutral or fearful face cues immediately before the Gabor patches and added the type of cue in the analyses. RESULTS SAUD patients showed a general reduction in sensitivity across all spatial frequencies, indicating impoverished processing of both coarse and fine-scale visual content. However, we observed selective impairments depending on facial cues: individuals with SAUD processed intermediate spatial frequencies less efficiently than healthy controls following neutral faces, whereas group differences emerged for the highest spatial frequencies following fearful faces. Altogether, SAUD was associated with mixed MC and PC deficits that may vary according to emotional content, in line with a flexible but suboptimal use of low-level visual content. Such subtle alterations could have implications for everyday life's complex visual judgments.
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Affiliation(s)
- Coralie Creupelandt
- Louvain Experimental Psychopathology Research Group (UCLEP), Psychological Sciences Research Institute (IPSY), UCLouvain, B-1348, Louvain-la-Neuve, Belgium.,Centre National de Ressources Et de Résilience Lille-Paris (CN2R), 59000, Lille, France
| | - Pierre Maurage
- Louvain Experimental Psychopathology Research Group (UCLEP), Psychological Sciences Research Institute (IPSY), UCLouvain, B-1348, Louvain-la-Neuve, Belgium
| | - Bruno Bocanegra
- Department of Psychology, Educational, and Child Studies, Erasmus University Rotterdam, Rotterdam, The Netherlands
| | - Sébastien Szaffarczyk
- Univ. Lille, Inserm, CHU Lille, U1172 - LilNCog - Lille Neuroscience & Cognition, 59000, Lille, France.,CURE, Service de Psychiatrie de L'enfant Et de L'adolescent, Hôpital Fontan 1, Clinique de Psychiatrie, CHU Lille, CS 70001, F-59000, Lille, France
| | - Philippe de Timary
- Department of Adult Psychiatry, Saint-Luc Academic Hospital, B-1200, Brussels, Belgium
| | | | | | - Fabien D'Hondt
- Centre National de Ressources Et de Résilience Lille-Paris (CN2R), 59000, Lille, France. .,Univ. Lille, Inserm, CHU Lille, U1172 - LilNCog - Lille Neuroscience & Cognition, 59000, Lille, France. .,CURE, Service de Psychiatrie de L'enfant Et de L'adolescent, Hôpital Fontan 1, Clinique de Psychiatrie, CHU Lille, CS 70001, F-59000, Lille, France.
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Zhang Y, Li Q, Zhao X, Tan M. Robot learning through observation via coarse-to-fine grained video summarization. Appl Soft Comput 2021. [DOI: 10.1016/j.asoc.2020.106913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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