Sensory adaptation is the reduction of neural activity after repeated exposure to a stimulus. In a recent study, Kar et al. (Kar K, Ito T, Cole MW, Krekelberg B. 123: 428-438, 2020) found that implementation of 10-Hz transcranial alternating current stimulation (tACS) to the human middle temporal cortex (hMT+) decreased sensory adaptation and increased functional connectivity. We explain the relevance of neuroimaging utilization with tACS and suggest different methods. Additionally, future directions are provided by introducing task-relevant oscillatory frequencies for tACS related to other sensory processes that undergo adaptation.
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http://dx.doi.org/10.1152/jn.00215.2020 | DOI Listing |
Unlabelled: Sensory filtering - prioritizing relevant stimuli while ignoring irrelevant ones - is crucial for animals to adapt and survive in complex environments. While this phenomenon has been primarily studied in organisms with complex nervous systems, it remains unclear whether simpler organisms also possess such capabilities. Here, we studied temporal information processing in , a freshwater planarian flatworm with a primitive nervous system.
View Article and Find Full Text PDFNat Commun
January 2025
Center for Information and Neural Networks (CiNet), Advanced ICT Research Institute, National Institute of Information and Communications Technology, Suita, Japan.
The ability to estimate numerical magnitude is essential for decision-making and is thought to underlie arithmetic skills. In humans, neural populations in the frontoparietal regions are tuned to represent numerosity. However, it remains unclear whether their response properties are fixed to a specific numerosity (i.
View Article and Find Full Text PDFPLoS Comput Biol
January 2025
Biorobotics Laboratory, EPFL, Lausanne, Switzerland.
Humans can perform movements in various physical environments and positions (corresponding to different experienced gravity), requiring the interaction of the musculoskeletal system, the neural system and the external environment. The neural system is itself comprised of several interactive components, from the brain mainly conducting motor planning, to the spinal cord (SC) implementing its own motor control centres through sensory reflexes. Nevertheless, it remains unclear whether similar movements in various environmental dynamics necessitate adapting modulation at the brain level, correcting modulation at the spinal level, or both.
View Article and Find Full Text PDFCommun Psychol
January 2025
State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China.
Infectious diseases have been major causes of death throughout human history and are assumed to broadly affect human psychology. However, whether and how conceptual processing, an internal world model central to various cognitive processes, adapts to such salient stress variables remains largely unknown. To address this, we conducted three studies examining the relationship between pathogen severity and semantic space, probed through the main neurocognitive semantic dimensions revealed by large-scale text analyses: one cross-cultural study (across 43 countries) and two historical studies (over the past 100 years).
View Article and Find Full Text PDFCrit Rev Biotechnol
January 2025
Department of Animal Biotechnology, Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, Jeju Special Self-Governing Province, Republic of Korea.
Exploring the untapped potential of deep-sea microorganisms, particularly their cold-active enzymes, or psychrozymes, offers exciting possibilities for revolutionizing various aspects of the food processing industry. This review focuses on these enzymes, derived from the largely unexplored depths of the deep ocean, where microorganisms have developed unique adaptations to extreme conditions. Psychrozymes, as bioactive molecules, hold significant promise for food industry applications.
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