Transient effects of prolonged stimulation with moving gratings were studied in single units of the cat striate cortex. In most units, differential adaptation aftereffects of opposite directions of motion could be demonstrated. These results correlate with the psychophysical movement aftereffects.
Download full-text PDF |
Source |
---|
Sci Rep
January 2025
Department of Psychology, Faculty of Psychology and Sport Science, Justus Liebig University, Otto-Behaghel-Str. 10F, 35394, Gießen, Germany.
Adapting movements to rapidly changing conditions is fundamental for interacting with our dynamic environment. This adaptability relies on internal models that predict and evaluate sensory outcomes to adjust motor commands. Even infants anticipate object properties for efficient grasping, suggesting the use of internal models.
View Article and Find Full Text PDFBrain Sci
December 2024
School of Physical and Occupational Therapy, McGill University, Montréal, QC H3G 1Y5, Canada.
In the last few years, transcranial alternating current stimulation (tACS) has attracted attention as a promising approach to interact with ongoing oscillatory cortical activity and, consequently, to enhance cognitive and motor processes. While tACS findings are limited by high variability in young adults' responses, its effects on brain oscillations in older adults remain largely unexplored. In fact, the modulatory effects of tACS on cortical oscillations in healthy aging participants have not yet been investigated extensively, particularly during movement.
View Article and Find Full Text PDFPsychon Bull Rev
January 2025
Experimental Psychology, University College London, London, UK.
Hand movements frequently occur with speech. The extent to which the memories that guide co-speech hand movements are tied to the speech they occur with is unclear. Here, we paired the acquisition of a new hand movement with speech.
View Article and Find Full Text PDFNeuron
December 2024
Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA. Electronic address:
Transient exposure to ketamine can trigger lasting changes in behavior and mood. We found that brief ketamine exposure causes long-term suppression of futility-induced passivity in larval zebrafish, reversing the "giving-up" response that normally occurs when swimming fails to cause forward movement. Whole-brain imaging revealed that ketamine hyperactivates the norepinephrine-astroglia circuit responsible for passivity.
View Article and Find Full Text PDFSci Rep
December 2024
REVAL - Rehabilitation Research Center, Faculty of Rehabilitation Sciences, University of Hasselt - Campus Diepenbeek, Wetenschapspark 7, Diepenbeek, B-3590, Belgium.
Theta burst stimulation (TBS) can modulate cortical excitability but suffers from high inter-subject variability. Modified TBS frequency patterns (30 Hz) showed consistent inhibitory aftereffects, but further research into the time course of these effects is needed. This study aimed to investigate the efficacy of a 30 Hz continuous TBS (cTBS) protocol.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!