This title appears in the Scientific Report :
2012
KINARM, EyeLink & Cerebus - Hardware Setup, Data Flow & Task Environment
KINARM, EyeLink & Cerebus - Hardware Setup, Data Flow & Task Environment
Vision-for-action is defined as a distinct functional stream of brain processes which allow us to use of complex perceptual processing for goal-directed actions. However, it is still unclear how the widely distributed neuronal networks are organized to allow the visual and motor cortical areas to pr...
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Personal Name(s): | De Haan, Marcel |
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Contributing Institute: |
Computational and Systems Neuroscience; INM-6 |
Imprint: |
2012
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Conference: | Vision4Action Workshop, Marseille (France), 2012-06-20 - 2012-06-20 |
Document Type: |
Talk (non-conference) |
Research Program: |
Brain-inspired multiscale computation in neuromorphic hybrid systems Helmholtz Alliance on Systems Biology Signalling Pathways and Mechanisms in the Nervous System |
Publikationsportal JuSER |
Vision-for-action is defined as a distinct functional stream of brain processes which allow us to use of complex perceptual processing for goal-directed actions. However, it is still unclear how the widely distributed neuronal networks are organized to allow the visual and motor cortical areas to precisely coordinate the moment-to-moment information about the visual environment relative to the observer. This study aims to decipher the electrophysiological correlates connecting these distinct cortical areas by investigating the coordination of primary input and output areas in different behavioral conditions. Two 100-electrode micro-arrays will be chronically implanted in the primary visual (V1) and motor (M1) cortical areas of macaque monkeys to simultaneously record both single neuron spiking and population (local field potential, LFP) activities during a visually guided tracking task. The monkey is positioned into a exoskeleton robot (KINARM, BKin Technologies Ltd., Kingston, ON, Canada, www.bkintechnologies.com), which allows a full range of movements of one arm on a 2-dimensional horizontal plane. A semi-transparent mirror projects a virtual representation of his hand (a "dot") in the plane of the real (but invisible) arm together with the visual stimulus guiding the movement. The behavioral paradigm is designed so that visuo-motor coordination is required at some times, and not at others and contains various conditions such as (i) smooth tracking of various visual stimuli; (ii) modifying the visual environment to bias visual perception; (iii) perturbing mechanically the movement trajectory by using opposing force fields in an expected or unexpected manner; (iv) visual tracking vs. self-paced movements; (v) dissociating the visual environment from movement execution by modifying the gain of the visual feedback signal; etc. In all conditions, visual feedback of the movement trajectory may or may not be provided to the monkey. This study will provide new insights in selective cooperativity patterns within intra- and inter-areal networks. The initial pilot study will focus on programming efficient training protocols which prove to be successful for macaque monkeys, and allow the conditioned responses to manifest themselves. Once the desired behavior is established and the Utah arrays are implanted, the electrophysiological data will be collected and analyzed. |