Neuronal responses in cortical area 17 evoked by direct stimulation of areas 18 and 19 were investigated in acute experiments on unanesthetized cats. It was found that microiontophoretic application of serotonine changed late components of phasic neuronal responses and influenced the diffuse-tonic responses. The question on serotonin participation in trace responses and regulation of the excitability of visual cortex neurons is discussed.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
The strength of confidence is involved in controlling the intensity of attentional allocation.
Sci Rep
January 2025
Graduate School of Health Sciences, Hokkaido University, Sapporo, Japan.
Subjective confidence and uncertainty are closely related to cognition and behavior. However, direct evidence that subjective confidence controls attention allocation is lacking. This study aimed to clarify whether subjective confidence could be involved in controlling attention allocation and intensity.
View Article and Find Full Text PDFGamma oscillations and excitation/inhibition imbalance: parallel effects of N-methyl D-aspartate receptor antagonism and psychosis.
Biol Psychiatry Cogn Neurosci Neuroimaging
January 2025
San Francisco Veterans Affairs Medical Center, San Francisco, CA, United States; University of California, San Francisco, San Francisco, CA, United States. Electronic address:
Background: Auditory steady-state response (ASSR) abnormalities in the 40-Hz (gamma band) frequency have been observed in schizophrenia and rodent studies of N-methyl D-aspartate glutamate receptor (NMDAR) hypofunction. However, the extent to which 40-Hz ASSR abnormalities in schizophrenia resemble deficits in 40-Hz ASSR induced by acute administration of ketamine, an NMDAR antagonist, is not yet known.
Methods: To address this knowledge gap, we conducted parallel EEG studies: a crossover, placebo-controlled ketamine drug challenge study in healthy subjects (Study 1) and a comparison of patients with schizophrenia and healthy controls subjects (Study 2).
The Impact of Long-Term Tai Chi Practice on the Trust Behavior of Middle-Aged People.
Brain Behav
January 2025
Department of Psychology, Faculty of Education, Henan University, Kaifeng, China.
Purpose: Trust behavior is of fundamental importance for social stability and development. Middle-aged people, owing to their abundant social resources and extensive experience, have a significant impact through their trust behavior. However, research on enhancing their trust behavior is relatively scarce.
View Article and Find Full Text PDFObjectives: Calls to action within pharmacy education are frequently seen in the literature, with little information about their authors, audience, and focus, especially whether these calls led to any changes. This scoping review aims to (1) quantitatively and qualitatively characterize the calls to action in pharmacy education and (2) examine the traits of the published articles typically associated with effective advocacy.
Findings: A systematic literature search for scoping review was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses.
Causal evidence for increased theta and gamma phase consistency in a parieto-frontal network during the maintenance of visual attention.
Neuropsychologia
January 2025
Queensland Brain Institute, The University of Queensland; School of Psychology, The University of Queensland; CIFAR, Canada.
Endogenous visuo-spatial attention is under the control of a fronto-parietal network of brain regions. One key node in this network, the intra-parietal sulcus (IPS), plays a crucial role in maintaining endogenous attention, but little is known about its ongoing physiology and network dynamics during different attentional states. Here, we investigated the reactivity of the left IPS in response to brain stimulation under different states of selective attention.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!