This Ethics Rounds considers the benefits and burdens of a potentially temporary tracheostomy in an adolescent with autism and severe tactile defensiveness.
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| http://dx.doi.org/10.1542/peds.2021-054469 | DOI Listing |
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A Roadmap for Implanting Electrode Arrays to Evoke Tactile Sensations Through Intracortical Stimulation.
Hum Brain Mapp
December 2024
Rehab Neural Engineering Labs, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Intracortical microstimulation (ICMS) is a method for restoring sensation to people with paralysis as part of a bidirectional brain-computer interface (BCI) to restore upper limb function. Evoking tactile sensations of the hand through ICMS requires precise targeting of implanted electrodes. Here we describe the presurgical imaging procedures used to generate functional maps of the hand area of the somatosensory cortex and subsequent planning that guided the implantation of intracortical microelectrode arrays.
View Article and Find Full Text PDFEvoking stable and precise tactile sensations via multi-electrode intracortical microstimulation of the somatosensory cortex.
Nat Biomed Eng
December 2024
Department of Organismal Biology and Anatomy, University of Chicago, Chicago, IL, USA.
Tactile feedback from brain-controlled bionic hands can be partially restored via intracortical microstimulation (ICMS) of the primary somatosensory cortex. In ICMS, the location of percepts depends on the electrode's location and the percept intensity depends on the stimulation frequency and amplitude. Sensors on a bionic hand can thus be linked to somatotopically appropriate electrodes, and the contact force of each sensor can be used to determine the amplitude of a stimulus.
View Article and Find Full Text PDFThe tactile signal detection task and why it could change how we measure workload.
Appl Ergon
April 2025
Airbus Defense & Space, Rechliner Straße, Manching, Germany. Electronic address:
In Human Factors research, measuring the construct of workload is common. This often takes the form of using subjective questionnaires such as the NASA-TLX. Another approach analyses operators' performance in a secondary task to quantify and measure workload.
View Article and Find Full Text PDFSelf-other boundary under social threat in schizophrenia.
Schizophr Res
December 2024
Department of Psychology, Vanderbilt University, Nashville, USA.
Article Synopsis
- The concept of peripersonal space (PPS) is crucial for distinguishing our bodily self from others and is believed to be disrupted in individuals with schizophrenia (SZ).
- A study using immersive virtual reality tested how perceived threats from approaching avatars affected the PPS of individuals with SZ and matched controls (CO).
- Results indicated that while CO could sharpen their self-boundary in response to perceived threats, SZ individuals showed a shallower response, linking it to symptoms like delusions and loneliness, highlighting the need for more research on the self-boundary regulation in SZ.
Effect of Spatial and Temporal Prediction on Tactile Sensitivity.
Brain Sci
July 2024
School of Medicine, Osaka Metropolitan University, 3-7-30 Habikino, Habikino City 583-8555, Osaka, Japan.
The purpose of the present study was to examine whether spatial or temporal prediction of the tactile stimulus contributes to tactile sensitivity. To investigate the effect of spatial prediction on tactile sensitivity, electrical stimuli were provided for the digit nerve in one of five fingers, and advanced notice of the stimulating finger was provided before the stimulus in some trials but not in others. There was no significant effect of spatial prediction on the intensity at the perceptual threshold of the digit nerve stimulus.
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