Motion-dependent representation of space in area MT+
By Gerrit W. Maus, Jason Fischer, David Whitney. 2013
73 citations recorded by the source corpus.
Summary How is visual space represented in cortical area MT+? At a relatively coarse scale, the organization of MT+ is debated: Retinotopic, spatiotopic, or mixed representations have been proposed. However, none of these entirely explains perceptual localization of objects at a fine spatial scale—a scale relevant for tasks like navigating or manipulating objects. For example, perceived positions of objects are strongly modulated by visual motion: stationary flashes appear shifted in the direction of nearby motion. Does spatial coding in MT+ reflect these shifts in perceived position? We performed an fMRI experiment employing this “flash-drag effect”, and found that flashes presented near motion produced patterns of activity similar to physically shifted flashes in the absence of motion. This reveals a motion-dependent change in the neural representation of object position in human MT+, a process that could help compensate for perceptual and motor delays in localizing objects in dynamic scenes.
Subfields: Cognitive Neuroscience
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Citations in the corpus
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- Reactive Exploration to Cope with Non-Stationarity in Lifelong Reinforcement Learning (2022, background): “This internal model allows us to act upon internal predictions of how the world will behave in the future (Maus et al., 2013).”