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Vannuscorps G, Galaburda A, Caramazza A. From intermediate shape-centered representations to the perception of oriented shapes: response to commentaries. Cogn Neuropsychol 2023; 40:71-94. [PMID: 37642330 DOI: 10.1080/02643294.2023.2250511] [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: 04/19/2023] [Revised: 07/14/2023] [Accepted: 07/31/2023] [Indexed: 08/31/2023]
Abstract
In this response paper, we start by addressing the main points made by the commentators on the target article's main theoretical conclusions: the existence and characteristics of the intermediate shape-centered representations (ISCRs) in the visual system, their emergence from edge detection mechanisms operating on different types of visual properties, and how they are eventually reunited in higher order frames of reference underlying conscious visual perception. We also address the much-commented issue of the possible neural mechanisms of the ISCRs. In the final section, we address more specific and general comments, questions, and suggestions which, albeit very interesting, were less directly focused on the main conclusions of the target paper.
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Affiliation(s)
- Gilles Vannuscorps
- Department of Psychology, Harvard University, Cambridge, MA, USA
- Institute of Psychological Sciences, Université catholique de Louvain, Louvain-la-Neuve, Belgium
- Institute of Neuroscience, Université catholique de Louvain, Louvain-la-Neuve, Belgium
- Louvain Bionics, Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Albert Galaburda
- Department of Neurology, Harvard Medical School and Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Alfonso Caramazza
- Department of Psychology, Harvard University, Cambridge, MA, USA
- Center for Mind/Brain Sciences (CIMeC), Università degli Studi di Trento, Rovereto, Italy
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Kody E, Diwadkar VA. Magnocellular and parvocellular contributions to brain network dysfunction during learning and memory: Implications for schizophrenia. J Psychiatr Res 2022; 156:520-531. [PMID: 36351307 DOI: 10.1016/j.jpsychires.2022.10.055] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 10/24/2022] [Accepted: 10/28/2022] [Indexed: 11/07/2022]
Abstract
Memory deficits are core features of schizophrenia, and a central aim in biological psychiatry is to identify the etiology of these deficits. Scrutiny is naturally focused on the dorsolateral prefrontal cortex and the hippocampal cortices, given these structures' roles in memory and learning. The fronto-hippocampal framework is valuable but restrictive. Network-based underpinnings of learning and memory are substantially diverse and include interactions between hetero-modal and early sensory networks. Thus, a loss of fidelity in sensory information may impact memorial and cognitive processing in higher-order brain sub-networks, becoming a sensory source for learning and memory deficits. In this overview, we suggest that impairments in magno- and parvo-cellular visual pathways result in degraded inputs to core learning and memory networks. The ascending cascade of aberrant neural events significantly contributes to learning and memory deficits in schizophrenia. We outline the network bases of these effects, and suggest that any network perspectives of dysfunction in schizophrenia must assess the impact of impaired perceptual contributions. Finally, we speculate on how this framework enriches the space of biomarkers and expands intervention strategies to ameliorate this prototypical disconnection syndrome.
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Affiliation(s)
- Elizabeth Kody
- Department of Psychiatry and Behavioral Neurosciences, Wayne State University School of Medicine, USA
| | - Vaibhav A Diwadkar
- Department of Psychiatry and Behavioral Neurosciences, Wayne State University School of Medicine, USA.
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Ren Y, Bu X, Wang M, Gong Y, Wang J, Yang Y, Li G, Zhang M, Zhou Y, Han ST. Synaptic plasticity in self-powered artificial striate cortex for binocular orientation selectivity. Nat Commun 2022; 13:5585. [PMID: 36151070 PMCID: PMC9508249 DOI: 10.1038/s41467-022-33393-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Get in-depth understanding of each part of visual pathway yields insights to conquer the challenges that classic computer vision is facing. Here, we first report the bioinspired striate cortex with binocular and orientation selective receptive field based on the crossbar array of self-powered memristors which is solution-processed monolithic all-perovskite system with each cross-point containing one CsFAPbI3 solar cell directly stacking on the CsPbBr2I memristor. The plasticity of self-powered memristor can be modulated by optical stimuli following triplet-STDP rules. Furthermore, plasticity of 3 × 3 flexible crossbar array of self-powered memristors has been successfully modulated based on generalized BCM learning rule for optical-encoded pattern recognition. Finally, we implemented artificial striate cortex with binocularity and orientation selectivity based on two simulated 9 × 9 self-powered memristors networks. The emulation of striate cortex with binocular and orientation selectivity will facilitate the brisk edge and corner detection for machine vision in the future applications. Designing efficient bio-inspired vision systems remains a challenge. Here, the authors report a bio-inspired striate visual cortex with binocular and orientation selective receptive field based on self-powered memristor to enable machine vision with brisk edge and corner detection in the future applications.
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Affiliation(s)
- Yanyun Ren
- Institute for Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, PR China.,Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, PR China
| | - Xiaobo Bu
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, PR China
| | - Ming Wang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, PR China
| | - Yue Gong
- College of Electronics and Information Engineering, Shenzhen University, Shenzhen, 518060, PR China
| | - Junjie Wang
- College of Electronics and Information Engineering, Shenzhen University, Shenzhen, 518060, PR China
| | - Yuyang Yang
- College of Electronics and Information Engineering, Shenzhen University, Shenzhen, 518060, PR China
| | - Guijun Li
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, PR China
| | - Meng Zhang
- College of Electronics and Information Engineering, Shenzhen University, Shenzhen, 518060, PR China
| | - Ye Zhou
- Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, PR China
| | - Su-Ting Han
- College of Electronics and Information Engineering, Shenzhen University, Shenzhen, 518060, PR China.
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Kislinger L. Photographs of Actions: What Makes Them Special Cues to Social Perception. Brain Sci 2021; 11:brainsci11111382. [PMID: 34827381 PMCID: PMC8615998 DOI: 10.3390/brainsci11111382] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 10/18/2021] [Accepted: 10/18/2021] [Indexed: 11/16/2022] Open
Abstract
I have reviewed studies on neural responses to pictured actions in the action observation network (AON) and the cognitive functions of these responses. Based on this review, I have analyzed the specific representational characteristics of action photographs. There has been consensus that AON responses provide viewers with knowledge of observed or pictured actions, but there has been controversy about the properties of this knowledge. Is this knowledge causally provided by AON activities or is it dependent on conceptual processing? What elements of actions does it refer to, and how generalized or specific is it? The answers to these questions have come from studies that used transcranial magnetic stimulation (TMS) to stimulate motor or somatosensory cortices. In conjunction with electromyography (EMG), TMS allows researchers to examine changes of the excitability in the corticospinal tract and muscles of people viewing pictured actions. The timing of these changes and muscle specificity enable inferences to be drawn about the cognitive products of processing pictured actions in the AON. Based on a review of studies using TMS and other neuroscience methods, I have proposed a novel hypothetical account that describes the characteristics of action photographs that make them effective cues to social perception. This account includes predictions that can be tested experimentally.
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Non-invasive neurostimulation modulates processing of spatial frequency information in rapid perception of faces. Atten Percept Psychophys 2021; 84:150-160. [PMID: 34668174 DOI: 10.3758/s13414-021-02384-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2021] [Indexed: 11/08/2022]
Abstract
This study used high-frequency transcranial random noise stimulation (tRNS) to examine how low and high spatial frequency filtered faces are processed. Response times were measured in a task where healthy young adults categorised spatially filtered hybrid faces, presented at foveal and peripheral blocks, while sham and high-frequency random noise was applied to a lateral occipito-temporal location on their scalp. Both the Frequentist and Bayesian approaches show that in contrast to sham, active stimulation significantly reduced response times to peripherally presented low spatial frequency information. This finding points to a possible plasticity in targeted regions induced by non-invasive neuromodulation of spatial frequency information in rapid perception of faces.
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