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Sousa T, Sayal A, Duarte JV, Costa GN, Castelo-Branco M. A human cortical adaptive mutual inhibition circuit underlying competition for perceptual decision and repetition suppression reversal. Neuroimage 2024; 285:120488. [PMID: 38065278 DOI: 10.1016/j.neuroimage.2023.120488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 09/17/2023] [Accepted: 12/05/2023] [Indexed: 01/13/2024] Open
Abstract
A model based on inhibitory coupling has been proposed to explain perceptual oscillations. This 'adapting reciprocal inhibition' model postulates that it is the strength of inhibitory coupling that determines the fate of competition between percepts. Here, we used an fMRI-based adaptation technique to reveal the influence of neighboring neuronal populations, such as reciprocal inhibition, in motion-selective hMT+/V5. If reciprocal inhibition exists in this region, the following predictions should hold: 1. stimulus-driven response would not simply decrease, as predicted by simple repetition-suppression of neuronal populations, but instead, increase due to the activity from adjacent populations; 2. perceptual decision involving competing representations, should reflect decreased reciprocal inhibition by adaptation; 3. neural activity for the competing percept should also later on increase upon adaptation. Our results confirm these three predictions, showing that a model of perceptual decision based on adapting reciprocal inhibition holds true. Finally, they also show that the net effect of the well-known repetition suppression phenomenon can be reversed by this mechanism.
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Affiliation(s)
- Teresa Sousa
- Coimbra Institute for Biomedical Imaging and Translational Research (CIBIT), University of Coimbra, Portugal; Institute of Nuclear Sciences Applied to Health (ICNAS), University of Coimbra, Portugal
| | - Alexandre Sayal
- Coimbra Institute for Biomedical Imaging and Translational Research (CIBIT), University of Coimbra, Portugal; Institute of Nuclear Sciences Applied to Health (ICNAS), University of Coimbra, Portugal; Siemens Healthineers, Portugal
| | - João V Duarte
- Coimbra Institute for Biomedical Imaging and Translational Research (CIBIT), University of Coimbra, Portugal; Institute of Nuclear Sciences Applied to Health (ICNAS), University of Coimbra, Portugal; Faculty of Medicine, University of Coimbra, Portugal
| | - Gabriel N Costa
- Coimbra Institute for Biomedical Imaging and Translational Research (CIBIT), University of Coimbra, Portugal; Institute of Nuclear Sciences Applied to Health (ICNAS), University of Coimbra, Portugal
| | - Miguel Castelo-Branco
- Coimbra Institute for Biomedical Imaging and Translational Research (CIBIT), University of Coimbra, Portugal; Institute of Nuclear Sciences Applied to Health (ICNAS), University of Coimbra, Portugal; Faculty of Medicine, University of Coimbra, Portugal; Faculty of Psychology and Neuroscience, University of Maastricht, the Kingdom of the Netherlands.
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Silva AE, Harding JE, Chakraborty A, Dai DW, Gamble GD, McKinlay CJD, Nivins S, Shah R, Thompson B. Associations Between Autism Spectrum Quotient and Integration of Visual Stimuli in 9-year-old Children: Preliminary Evidence of Sex Differences. J Autism Dev Disord 2023:10.1007/s10803-023-06035-1. [PMID: 37344731 DOI: 10.1007/s10803-023-06035-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/30/2023] [Indexed: 06/23/2023]
Abstract
PURPOSE The dorsal stream vulnerability hypothesis posits that the dorsal stream, responsible for visual motion and visuo-motor processing, may be particularly vulnerable during neurodevelopment. Consistent with this, autism spectrum disorder (ASD) has been associated with deficits in global motion integration, though deficits in ventral stream tasks, such as form identification, have also been reported. In the current study, we examined whether a similar pattern of results is found in a cohort of 381 children born with neurodevelopmental risk factors and exhibiting a wide spectrum of caregiver-reported autistic traits. METHODS We examined the associations between global motion perception, global form perception, fine motor function, visual-motor integration, and autistic traits (autism spectrum quotient, AQ) using linear regression, accounting for possible interactions with sex and other factors relevant to neurodevelopment. RESULTS All assessments of dorsal stream function were significantly associated with AQ such that worse performance predicted higher AQ scores. We also observed a significant sex interaction, with worse global form perception associated with higher AQ in boys (n = 202) but not girls (n = 179). CONCLUSION We found widespread associations between dorsal stream functions and autistic traits. These associations were observed in a large group of children with a range of AQ scores, demonstrating a range of visual function across the full spectrum of autistic traits. In addition, ventral function was associated with AQ in boys but not girls. Sex differences in the associations between visual processing and neurodevelopment should be considered in the designs of future studies.
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Affiliation(s)
- Andrew E Silva
- School of Optometry and Vision Science, University of Waterloo, Waterloo, ON, Canada.
| | - Jane E Harding
- Liggins Institute, The University of Auckland, Auckland, New Zealand
| | - Arijit Chakraborty
- Chicago College of Optometry, Midwestern University, Downers Grove, IL, USA
| | - Darren W Dai
- Liggins Institute, The University of Auckland, Auckland, New Zealand
| | - Greg D Gamble
- Liggins Institute, The University of Auckland, Auckland, New Zealand
| | - Christopher J D McKinlay
- Liggins Institute, The University of Auckland, Auckland, New Zealand
- Kidz First Neonatal Care, Auckland, New Zealand
| | - Samson Nivins
- Liggins Institute, The University of Auckland, Auckland, New Zealand
| | - Rajesh Shah
- Liggins Institute, The University of Auckland, Auckland, New Zealand
| | - Benjamin Thompson
- School of Optometry and Vision Science, University of Waterloo, Waterloo, ON, Canada
- Liggins Institute, The University of Auckland, Auckland, New Zealand
- Centre for Eye and Vision Research Limited, 17W Science Park, Shatin, Hong Kong
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Yu A, Zhang R, Silva AE, Xing Y, Thompson B, Liu Z. Motion opponency at the middle temporal cortex: Preserved motion information and the effect of perceptual learning. Eur J Neurosci 2022; 56:6215-6226. [PMID: 36266211 DOI: 10.1111/ejn.15850] [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: 05/03/2022] [Revised: 08/22/2022] [Accepted: 09/20/2022] [Indexed: 12/29/2022]
Abstract
Motion opponency, first observed within the primate middle temporal cortex (MT), refers to the suppressing effect of opposite motion directions on neuronal activity. Namely, when opposing motion directional signals stimulate an MT neuron's receptive field, this neuron's response is comparable with that induced by flicker noise. Under such suppression, it is unknown whether any directional information is still represented at MT. In this study, we applied support vector machine (SVM) learning to human functional magnetic resonance imaging data to investigate if any motion defined orientation information was still available from suppressed MT. We found that, at least at the level of ±45° discrimination, such orientation information was still available. Interestingly, after behavioural perceptual learning that improved human discrimination of fine orientation discrimination (e.g. 42° vs. 48°) using the MT-suppressive motion stimuli, the SVM discrimination of ±45° worsened when functional magnetic resonance imaging (fMRI) signals at post-learning MT were used. This result is consistent with findings in Thompson et al. (2013) that, post-perceptual learning, MT suppression was not released, suggesting that motion opponency was perhaps functionally too important for perceptual learning to overcome.
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Affiliation(s)
- Alexander Yu
- Department of Computer Science, University of California, Los Angeles, Los Angeles, California, USA
| | - Ruizhe Zhang
- Department of Psychology, University of California, Los Angeles, Los Angeles, California, USA
| | - Andrew E Silva
- School of Optometry and Vision Science, University of Waterloo, Waterloo, Ontario, Canada
| | - Yang Xing
- Department of Psychology, University of California, Los Angeles, Los Angeles, California, USA
| | - Benjamin Thompson
- School of Optometry and Vision Science, University of Waterloo, Waterloo, Ontario, Canada.,Centre for Eye and Vision Research, Hong Kong
| | - Zili Liu
- Department of Psychology, University of California, Los Angeles, Los Angeles, California, USA.,1285 Psychology Building, Box 951563, Los Angeles, California, USA
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Waz S, Liu Z. Evidence for strictly monocular processing in visual motion opponency and Glass pattern perception. Vision Res 2021; 186:103-111. [PMID: 34082396 DOI: 10.1016/j.visres.2021.04.008] [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: 03/03/2020] [Revised: 03/11/2021] [Accepted: 04/27/2021] [Indexed: 10/21/2022]
Abstract
When presented with locally paired dots moving in opposite directions, motion selective neurons in the middle temporal cortex (MT) reduce firing while neurons in V1 are unaffected. This physiological effect is known as motion opponency. The current study used psychophysics to investigate the neural circuit underlying motion opponency. We asked whether opposing motion signals could arrive from different eyes into the receptive field of a binocular neuron while still maintaining motion opponency. We took advantage of prior findings that orientation discrimination of the motion axis (along which paired dots oscillate) is harder when dots move counter-phase than in-phase, an effect associated with motion opponency. We found that such an effect disappeared when paired dots originated from different eyes. This suggests that motion opponency, at some point, involves strictly monocular processing. This does not mean that motion opponency is entirely monocular. Further, we found that the effect of a Glass pattern disappeared under similar viewing conditions, suggesting that Glass pattern perception also involves some strictly monocular processing.
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Affiliation(s)
- Sebastian Waz
- Department of Cognitive Sciences, University of California Irvine, Irvine, CA 92697, USA; Department of Psychology, University of California Los Angeles, Los Angeles, CA 90095, USA.
| | - Zili Liu
- Department of Psychology, University of California Los Angeles, Los Angeles, CA 90095, USA
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Silva AE, Thompson B, Liu Z. Motion opponency examined throughout visual cortex with multivariate pattern analysis of fMRI data. Hum Brain Mapp 2020; 42:5-13. [PMID: 32881175 PMCID: PMC7721233 DOI: 10.1002/hbm.25198] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 08/02/2020] [Accepted: 08/19/2020] [Indexed: 11/08/2022] Open
Abstract
This study explores how the human brain solves the challenge of flicker noise in motion processing. Despite providing no useful directional motion information, flicker is common in the visual environment and exhibits omnidirectional motion energy which is processed by low‐level motion detectors. Models of motion processing propose a mechanism called motion opponency that reduces flicker processing. Motion opponency involves the pooling of local motion signals to calculate an overall motion direction. A neural correlate of motion opponency has been observed in human area MT+/V5, whereby stimuli with perfectly balanced motion energy constructed from dots moving in counter‐phase elicit a weaker response than nonbalanced (in‐phase) motion stimuli. Building on this previous work, we used multivariate pattern analysis to examine whether the activation patterns elicited by motion opponent stimuli resemble that elicited by flicker noise across the human visual cortex. Robust multivariate signatures of opponency were observed in V5 and in V3A. Our results support the notion that V5 is centrally involved in motion opponency and in the reduction of flicker. Furthermore, these results demonstrate the utility of multivariate analysis methods in revealing the role of additional visual areas, such as V3A, in opponency and in motion processing more generally.
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Affiliation(s)
- Andrew E Silva
- School of Optometry and Vision Science, University of Waterloo, Waterloo, Ontario, Canada.,Department of Psychology, University of California at Los Angeles, Los Angeles, California, USA
| | - Benjamin Thompson
- School of Optometry and Vision Science, University of Waterloo, Waterloo, Ontario, Canada
| | - Zili Liu
- Department of Psychology, University of California at Los Angeles, Los Angeles, California, USA
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