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- W2514461908 endingPage "056007" @default.
- W2514461908 startingPage "056007" @default.
- W2514461908 abstract "Lost sensations, such as touch, could one day be restored by electrical stimulation along the sensory neural pathways. Such stimulation, when informed by electronic sensors, could provide naturalistic cutaneous and proprioceptive feedback to the user. Perceptually, microstimulation of somatosensory brain regions produces localized, modality-specific sensations, and several spatiotemporal parameters have been studied for their discernibility. However, systematic methods for encoding a wide array of naturally occurring stimuli into biomimetic percepts via multi-channel microstimulation are lacking. More specifically, generating spatiotemporal patterns for explicitly evoking naturalistic neural activation has not yet been explored.We address this problem by first modeling the dynamical input-output relationship between multichannel microstimulation and downstream neural responses, and then optimizing the input pattern to reproduce naturally occurring touch responses as closely as possible.Here we show that such optimization produces responses in the S1 cortex of the anesthetized rat that are highly similar to natural, tactile-stimulus-evoked counterparts. Furthermore, information on both pressure and location of the touch stimulus was found to be highly preserved.Our results suggest that the currently presented stimulus optimization approach holds great promise for restoring naturalistic levels of sensation." @default.
- W2514461908 created "2016-09-16" @default.
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- W2514461908 date "2016-08-12" @default.
- W2514461908 modified "2023-10-16" @default.
- W2514461908 title "Eliciting naturalistic cortical responses with a sensory prosthesis via optimized microstimulation" @default.
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- W2514461908 doi "https://doi.org/10.1088/1741-2560/13/5/056007" @default.
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