The Neuroscience of Vision-Based Grasping: A Functional Review for Computational Modeling and Bio-Inspired Robotics

Chinellato, Eris; Pobil, Ángel P. del

doi:10.1142/s0219635209002137

Cited by 15 publications

(11 citation statements)

References 173 publications

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“…Recently, there has been a considerable interest in possible functional interactions between the dorsal and the ventral visual stream (Chinellato and Del Pobil 2009;Orban et al 2006;Sakata et al 1997). We show that synchronized beta activity exists between AIP and IT during 3D-shape discrimination.…”

Section: Discussionmentioning

confidence: 75%

“…Furthermore, recent anatomical tracer studies have found direct reciprocal connections between 3D-shape selective areas IT (area TEs) and AIP (Borra et al 2008(Borra et al , 2010. Accordingly, several authors have hypothesized that these anatomical connections are used to facilitate 3D-shape perception (Chinellato and Del Pobil 2009;Orban et al 2006). To test this possibility, we trained two rhesus monkeys to discriminate between disparity-defined concave and convex 3D shapes and recorded simultaneously in IT (TEs) and AIP during 3D-shape discrimination.…”

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confidence: 97%

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Synchronization between the end stages of the dorsal and the ventral visual stream

Verhoef

Vogels

Janssen

2011

Journal of Neurophysiology

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Verhoef B, Vogels R, Janssen P. Synchronization between the end stages of the dorsal and the ventral visual stream. J Neurophysiol 105: 2030 -2042, 2011. First published February 16, 2011 doi:10.1152/jn.00924.2010.-The end stage areas of the ventral (IT) and the dorsal (AIP) visual streams encode the shape of disparitydefined three-dimensional (3D) surfaces. Recent anatomical tracer studies have found direct reciprocal connections between the 3D-shape selective areas in IT and AIP. Whether these anatomical connections are used to facilitate 3D-shape perception is still unknown. We simultaneously recorded multi-unit activity (MUA) and local field potentials in IT and AIP while monkeys discriminated between concave and convex 3D shapes and measured the degree to which the activity in IT and AIP synchronized during the task. We observed strong beta-band synchronization between IT and AIP preceding stimulus onset that decreased shortly after stimulus onset and became modulated by stereo-signal strength and stimulus contrast during the later portion of the stimulus period. The beta-coherence modulation was unrelated to task-difficulty, regionally specific, and dependent on the MUA selectivity of the pairs of sites under study. The beta-spikefield coherence in AIP predicted the upcoming choice of the monkey. Several convergent lines of evidence suggested AIP as the primary source of the AIP-IT synchronized activity. The synchronized beta activity seemed to occur during perceptual anticipation and when the system has stabilized to a particular perceptual state but not during active visual processing. Our findings demonstrate for the first time that synchronized activity exists between the end stages of the dorsal and ventral stream during 3D-shape discrimination. three-dimensional shape perception; synchronization TO UNDERSTAND THE FUNCTIONING of brain networks, one must know the properties of its constituting elements and the interconnections between them. Traditional neuroscience has mainly focused on the functional properties of brain elements (e.g., feature tuning of neurons or the functional role of brain regions). However, recently there has been an increased interest in the brain's "connectome" (Sporns et al. 2005), i.e., the neural connections at the micro-, meso-, and macroscale.

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Section: Discussionmentioning

confidence: 75%

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confidence: 97%

Synchronization between the end stages of the dorsal and the ventral visual stream

Verhoef

Vogels

Janssen

2011

Journal of Neurophysiology

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“…The idea that the dorsal and ventral pathways are both involved in 3D discrimination has been suggested in the electrophysiology literature (Orban et al 2006) and in computational modeling (Chinellato and Del Pobil 2009). This connection was recently confirmed between areas IT and AIP in macaque (Verhoef et al 2011), two areas that receive direct inputs from V4 and V3A (Nakamura et al 2001;Orban et al 2006;Sakata et al 1997), respectively.…”

Section: Discussionmentioning

confidence: 99%

Bridging the gap: global disparity processing in the human visual cortex

Cottereau

McKee

Norcia

2012

Journal of Neurophysiology

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The human stereoscopic system is remarkable in its ability to utilize widely separated features as references to support fine depth discrimination. In a search for possible neural substrates of this ability, we recorded high-density EEG and used a distributed inverse technique to estimate population-level disparity responses in five regions of interest (ROIs): V1, V3A, hMT+, V4, and lateral occipital complex (LOC). The stimulus was a central modulating disk surrounded by a correlated "reference" annulus presented in the fixation plane. We varied a gap separating the disk from the annulus parametrically from 0 to 5.5° as a test of long-range disparity integration. In the V1, LOC, and hMT+ ROIs, the responses with gaps >0.5° were equal to those obtained in a control condition where the surround was composed of uncorrelated noise (no reference). By contrast, in the V4 and V3A ROIs, responses with gaps as large as 5.5° were still significantly higher than the control. As a test of the spatial distribution of the disparity reference information, we manipulated the properties of the stimulus by placing noise between the center and the surround or throughout the surround. The V3A ROI was particularly sensitive to disparity noise between the center and annulus regions, suggesting an important contribution of disparity edge detectors in this ROI.

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“…Actually, these two frames of reference have specific functions in the vision-for-action and vision-for-perception model such that egocentric representations would be used by the dorsal stream to program and control the skilled movements needed to carry out the action, whereas conscious perception would rely on allocentric representations supported by the ventral stream [28, 29]. However, a new question arises: how they interact and combine [30]. …”

Section: Introductionmentioning

confidence: 99%

An Active System for Visually-Guided Reaching in 3D across Binocular Fixations

Martínez-Martín

Pobil

Chessa

et al. 2014

The Scientific World Journal

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Based on the importance of relative disparity between objects for accurate hand-eye coordination, this paper presents a biological approach inspired by the cortical neural architecture. So, the motor information is coded in egocentric coordinates obtained from the allocentric representation of the space (in terms of disparity) generated from the egocentric representation of the visual information (image coordinates). In that way, the different aspects of the visuomotor coordination are integrated: an active vision system, composed of two vergent cameras; a module for the 2D binocular disparity estimation based on a local estimation of phase differences performed through a bank of Gabor filters; and a robotic actuator to perform the corresponding tasks (visually-guided reaching). The approach's performance is evaluated through experiments on both simulated and real data.

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The Neuroscience of Vision-Based Grasping: A Functional Review for Computational Modeling and Bio-Inspired Robotics

Cited by 15 publications

References 173 publications

Synchronization between the end stages of the dorsal and the ventral visual stream

Synchronization between the end stages of the dorsal and the ventral visual stream

Bridging the gap: global disparity processing in the human visual cortex

An Active System for Visually-Guided Reaching in 3D across Binocular Fixations

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