Intracortical microstimulation of human somatosensory cortex induces natural perceptual biases [PDF]
Brain StimulationTime-order error, a psychophysical phenomenon in which the duration in between successive stimuli alters perception, has been studied for decades by neuroscientists and psychologists. To date, however, the locus of these effects is unknown.
Charles M. Greenspon +4 more
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Local Neuronal Responses to Intracortical Microstimulation in Rats' Barrel Cortex Are Dependent on Behavioral Context [PDF]
Frontiers in Behavioral Neuroscience, 2022 The goal of cortical neuroprosthetics is to imprint sensory information as precisely as possible directly into cortical networks. Sensory processing, however, is dependent on the behavioral context.
Sergejus Butovas, Cornelius Schwarz
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Conveying tactile object characteristics through customized intracortical microstimulation of the human somatosensory cortex [PDF]
Nature CommunicationsMicrostimulation of the somatosensory cortex can evoke tactile percepts in people with spinal cord injury, providing a means to restore touch. While location and intensity can be reliably conveyed, two issues that prevent creating more complex ...
Ceci Verbaarschot +6 more
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The Long-Term Stability of Intracortical Microstimulation and the Foreign Body Response Are Layer Dependent [PDF]
Frontiers in Neuroscience, 2022 Intracortical microstimulation (ICMS) of the somatosensory cortex (S1) can restore sensory function in patients with paralysis. Studies assessing the stability of ICMS have reported heterogeneous responses across electrodes and over time, potentially ...
Morgan E. Urdaneta +10 more
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A computational model that predicts behavioral sensitivity to intracortical microstimulation. [PDF]
J Neural Eng, 2017 Intracortical microstimulation (ICMS) is a powerful tool to investigate the neural mechanisms of perception and can be used to restore sensation for patients who have lost it. While sensitivity to ICMS has previously been characterized, no systematic framework has been developed to summarize the detectability of individual ICMS pulse trains or the ...
Kim S, Callier T, Bensmaia SJ.
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The effect of chronic intracortical microstimulation on the electrode-tissue interface. [PDF]
J Neural Eng, 2014 Somatosensation is critical for effective object manipulation, but current upper limb prostheses do not provide such feedback to the user. For individuals who require use of prosthetic limbs, this lack of feedback transforms a mundane task into one that requires extreme concentration and effort.
Chen KH +6 more
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Intracortical Microstimulation Parameters Dictate the Amplitude and Latency of Evoked Responses
Brain Stimulation, 2016 Microstimulation of brain tissue plays a key role in a variety of sensory prosthetics, clinical therapies and research applications. However, the effects of stimulation parameters on the responses they evoke remain widely unknown.We aimed to investigate the contribution of each stimulation parameter to the response and identify interactions existing ...
Numa Dancause, Mohamad Sawan
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Behavioral assessment of sensitivity to intracortical microstimulation of primate somatosensory cortex. [PDF]
Proc Natl Acad Sci U S A, 2015 Significance Electrical stimulation of sensory structures in the brain is a powerful tool to investigate neural circuits and may provide a means to restore sensation for patients for whom stimulation of the nerve is not an option. For both purposes, however, it is critical to understand how the design of the stimulation shapes the ...
Kim S +5 more
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A Machine Learning-Based Decoder Framework for the Cortical Voltage-Sensitive Dye Responses to Retinal Neuromorphic Microstimulation: A Proof-of-Concept Simulation Study [PDF]
BioengineeringIntracortical microstimulation (ICMS) is a promising approach for visual prostheses. We recently proposed using retinal neuromorphic spike trains derived from visual images as ICMS pulse sequences, and preliminarily recorded cortical voltage-sensitive ...
Keisuke Yamada +3 more
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Advanced ScienceTactile feedback is essential for grip force control when operating a neuroprosthesis. Due to limited knowledge of cortical sensorimotor coordination, artificial feedback is mostly counterintuitive, requiring training to be associated with grasping ...
Qi Zhang +9 more
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