Motion Vision: Cortical Preferences Influenced by Retinal Direction Selectivity
Sign Up to like & getrecommendations! Published in 2017 at "Current Biology"
DOI: 10.1016/j.cub.2017.05.083
Abstract: A recent study shows that retinal direction selectivity influences a subset of cells in primary visual cortex which respond to the optic flow associated with forward motion, while other cortical direction selective cells perform this… read more here.
Keywords: motion vision; direction; direction selectivity; retinal direction ... See more keywords
Recurrent network dynamics shape direction selectivity in primary auditory cortex
Sign Up to like & getrecommendations! Published in 2021 at "Nature Communications"
DOI: 10.1038/s41467-020-20590-6
Abstract: Detecting the direction of frequency modulation (FM) is essential for vocal communication in both animals and humans. Direction-selective firing of neurons in the primary auditory cortex (A1) has been classically attributed to temporal offsets between… read more here.
Keywords: topography; direction; network; recurrent ... See more keywords
Spatiotemporal properties of glutamate input support direction selectivity in the dendrites of retinal starburst amacrine cells
Sign Up to like & getrecommendations! Published in 2022 at "eLife"
DOI: 10.1101/2022.07.12.499686
Abstract: The asymmetric summation of kinetically distinct glutamate inputs across the dendrites of retinal “starburst” amacrine cells is proposed to underlie their direction selective properties, but experimentally verifying input kinetics has been a challenge. Here, we… read more here.
Keywords: retinal starburst; starburst amacrine; direction; dendrites retinal ... See more keywords
Weighting neurons by selectivity produces near-optimal population codes.
Sign Up to like & getrecommendations! Published in 2019 at "Journal of neurophysiology"
DOI: 10.1152/jn.00504.2018
Abstract: Perception is produced by "reading out" the representation of a sensory stimulus contained in the activity of a population of neurons. To examine experimentally how populations code information, a common approach is to decode a… read more here.
Keywords: direction; decoding performance; population; selectivity ... See more keywords
Refractory density model of cortical direction selectivity: Lagged-nonlagged, transient-sustained, and On-Off thalamic neuron-based mechanisms and intracortical amplification
Sign Up to like & getrecommendations! Published in 2020 at "PLoS Computational Biology"
DOI: 10.1371/journal.pcbi.1008333
Abstract: A biophysically detailed description of the mechanisms of the primary vision is still being developed. We have incorporated a simplified, filter-based description of retino-thalamic visual signal processing into the detailed, conductance-based refractory density description of… read more here.
Keywords: refractory density; transient sustained; model; nonlagged transient ... See more keywords
Realistic retinal modeling unravels the differential role of excitation and inhibition to starburst amacrine cells in direction selectivity
Sign Up to like & getrecommendations! Published in 2021 at "PLoS computational biology"
DOI: 10.1371/journal.pcbi.1009754
Abstract: Retinal direction-selectivity originates in starburst amacrine cells (SACs), which display a centrifugal preference, responding with greater depolarization to a stimulus expanding from soma to dendrites than to a collapsing stimulus. Various mechanisms were hypothesized to… read more here.
Keywords: sac; direction selectivity; direction; centrifugal preference ... See more keywords
Tangential distribution of cell type and direction selectivity in monkey area MT.
Sign Up to like & getrecommendations! Published in 2020 at "Anais da Academia Brasileira de Ciencias"
DOI: 10.1590/0001-3765202020190564
Abstract: We studied the multiunit responses to moving and static stimuli from 585 cell clusters in area MT using multi-electrode arrays. Our aim was to explore if MT columns exhibit any larger-scale tangential organization or clustering… read more here.
Keywords: motion; orientation selectivity; type; cell ... See more keywords
Synaptic and intrinsic mechanisms underlying development of cortical direction selectivity
Sign Up to like & getrecommendations! Published in 2020 at "eLife"
DOI: 10.7554/elife.58509
Abstract: Modifications of synaptic inputs and cell-intrinsic properties both contribute to neuronal plasticity and development. To better understand these mechanisms, we undertook an intracellular analysis of the development of direction selectivity in the ferret visual cortex,… read more here.
Keywords: development; cortical direction; plasticity; direction selectivity ... See more keywords