Cross-Round Dynamics in Primary Visual Cortex
Computational design and nonlinear dynamics of a recurrent network model of the primary visual cortex
... neural dynamics is a basic computational substrate for cortical process- ...the primary visual cortex, this recurrent dynamics is instantiated by finite range, lateral, intra-cortical ...
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The multisensory function of the human primary visual cortex
... the dynamics of these processes with a resolution on par with ...of primary visual cortex and other early sensory areas and its modulation by information from other sensory ...the ...
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Modelling Primary Visual Cortex Dynamics with a Dynamic Neural Field Based on Voltage Sensitive Dyes
... 9.3. Physiological interpretation of the parameters 9.3.2. Inhibition observed in the VSDI-signals Measuring with VSDs offers real-time optical imaging of membrane potentials with one dye-signal representing the average ...
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Contextual modulation of primary visual cortex by auditory signals
... This cross-classification approach was conceptually informative because it showed that auditory feed- back information can generalize to different categorical examples, suggesting that V2 and V3 were not simply ...
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A neural model of contour integration in the primary visual cortex
... these visual cortical models do not address the contour integration ...other visual input dimensions can be ...neural dynamics and other visual computations in V1 ...
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A Disinhibitory Circuit for Contextual Modulation in Primary Visual Cortex
... neurons in mouse V1. In contrast, VIP neurons primarily provide inhibition to SOM neurons, thus representing a key component of cortical disinhibitory circuits (Jiang et al., 2015; Karnani et al., 2016; Millman et al., ...
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Origins of feature selectivities and maps in the mammalian primary visual cortex
... and cross-orientation modules, although with a small bias of a higher excitation-to-inhibition ratio in the projection to iso-orientation domains ...by cross-orientation ...
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Distributed Fading Memory for Stimulus Properties in the Primary Visual Cortex
... Support vector machine. A support vector machine (SVM) is a supervised learning method for binary classification problems. The training samples are first mapped into a N-dimensional feature space, and classification is ...
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Altered functional connectivity of primary visual cortex in late blindness
... the primary somatosensory cor- tex, which is involved in multiple sensory ...the visual cortex and PostCG showed robust correlation in SCs, which involved in combining processing of spatial ...
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Visual hemineglect and lesion-induced changes of top-down activity in the primary visual cortex
... neuronal dynamics in primary visual cor- tex and has monitored activity changes related to a behavioral ...early visual processing stage, neuronal activity pat- terns are highly modulated by ...
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Model networks!!!primary visual cortex (V1):!!!Orientation and spatial frequency!
... Disparity coding in V1! From: De Angelis (2000) Seeing in three dimensions: the neurophysiology of stereopsis. Trends in Cognitive Sci, 4:80-90.! Horizontal disparity. A top-down view of an observer who is looking ...
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Specific excitatory connectivity for feature integration in mouse primary visual cortex
... Here xi is the instantaneous activation current being injected into neuron i in Amperes (A). This activation current causes the neuron to fire under a linear-threshold current-to-firing rate (IāF) relationship, defined ...
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Electroencephalography responses evoked by transcranial magnetic stimulation on the primary visual cortex
... fixation cross presented near the left edge of a black ...fixation cross was in the center of the visual field of the ...fixation cross was that in case the subjects saw phosphenes, they were ...
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Dynamics in primary somatosensory cortex: a role for SI in the processing of tactile information
... ROI); in addition, as amplitude is increased it tends to develop at a progressively earlier time after stimulus onset. The correlation maps shown in Figure 3.7 provide a comprehensive overview of the time course of ...
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Low-Frequency Local Field Potentials and Spikes in Primary Visual Cortex Convey Independent Visual Information
... Fries et al., 2007). The high signal correlation between 60 and 100 Hz LFP frequencies, and their overall power increase dur- ing stimulus presentation, may indicate that all fluctuations in this range are generated by ...
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A functional model for primary visual cortex
... 76 4.4. Six-channel model Calculation of the orientation tuning as well as the receptive field shape showed that the basic model is only coarsely orientation selective. This limitation comes from using just two ...
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Representation and Adaptation in the Primary Visual Cortex
... the primary visual cortex and serves as a model problem for understanding cor- tical circuitry and ...the primary visual cortex in vivo by our collaborators, which take into ...
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The role of primary visual cortex in unconscious visual processing
... normal visual field and sometimes a redundant stimulus to the blind visual ...subcortical visual structures than the SC showed RTE as well (Georgy, Celeghin, Marzi, Tamietto, ...
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Synaptic organisation of visual space in primary visual cortex
... square filter. We then calculated the amount of overlap between the ON and OFF RFs as overlap = ššššā©šššššš ššššāŖšššššš where ON and OFF are the regions of visual space covered by ON and OFF subfields, ...
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Mapping of Stimulus Energy in Primary Visual Cortex
... in primary visual ...of primary visual cortex (V1) by Basole, White, and Fitzpatrick demonstrated that maps of preferred orientation depend on the choice of stimuli used to measure ...
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