The purpose of this study was to evaluate CNV amplitude variability and its degree of covariance with the spontaneous EEG (quantified by FFT algorithm) and the reaction time. 14 healthy male subjects made from atypical for one hour, and they had to keep their eyes closed. Recordings were during this period. CNV experimental paradigm was performed (S1--S2 = 1500 msec). The major findings of this study were that: 1) the CNV amplitude progressively decreased during the first part of the test (habituation) and then tended to stabilize. While not correlated with the vigilance index of spontaneous EEG (alpha/theta + delta index) the CNV amplitude was significantly related to the alpha reactivity index (% alpha of spontaneous EEG--% alpha of the S1--S2 EEG), 2) the CNV slope (calculated by drawing two points situated at 600 msec and 1400 msec after S1) showed significant relationship to both these EEG indices and the reaction time. These data are discussed in terms of Cooper's distinction between "scopeutic" and "categoric" processes (1978) and in terms of the Tecce model of the CNV (1972).
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s0370-4475(79)80023-4 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Neurophysiological and Cognitive Changes Induced by the Acute Head-Down Tilt.
Aerosp Med Hum Perform
January 2025
Introduction: In space, under weightlessness conditions, human brain activity is changed due to the shifting of body fluid and blood toward the cephalic region. This shifting leads to changes in cerebral hemodynamics and, consequently, neurophysiological function, which impacts mental functions like cognition and decision-making capabilities of space travelers. The present study reports the effect of acute exposure to simulated microgravity on cognitive functions and event-related potentials.
View Article and Find Full Text PDFDeficits of proactive control in individuals with test anxiety: Evidence from ERPs.
Biol Psychol
January 2025
Department of Psychology, Nanjing University, Nanjing 210023, China; Department of Radiology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China; State Key Laboratory of Media Convergence Production Technology and Systems, Beijing 100083, China. Electronic address:
Proactive control in cognitive control is characterized by an individual's ability to maintain representations of goal-relevant information prior to responding to prevent conflicts. Text anxiety is a situation-specific personality trait characterized by excessive fear and worry about exams, accompanied by emotional issues. Individuals with high test anxiety exhibit deficiencies in cognitive control capabilities, but whether there is a defect in proactive control remains unclear.
View Article and Find Full Text PDFTennis experience impacts time estimation within different timing processes: An ERP study.
Neuropsychologia
January 2025
School of Psychology, Shanghai University of Sport, Shanghai, China; Key Laboratory of Exercise and Health Sciences (Shanghai University of Sport), Ministry of Education, Shanghai, China; Key Laboratory of Motor Cognitive Assessment and Regulation, Shanghai, China. Electronic address:
Elite tennis players demonstrate an outstanding ability to predict the timing of their shots during matches, especially during prolonged rallies. Exploring the characteristics of this temporal perception advantage and its cognitive processing mechanisms may help explain the influence of sports experience on temporal perception abilities. We recruited 28 tennis athletes and 28 controls with no sports experience and measured their behavioral performance and brain neural activity characteristics using a time-to-contact paradigm under different temporal context conditions.
View Article and Find Full Text PDFMuscarinic receptors mediate motivation via preparatory neural activity in humans.
Elife
November 2024
Nuffield Department of Clinical Neuroscience, University of Oxford, Oxford, United Kingdom.
Motivation depends on dopamine, but might be modulated by acetylcholine which influences dopamine release in the striatum, and amplifies motivation in animal studies. A corresponding effect in humans would be important clinically, since anticholinergic drugs are frequently used in Parkinson's disease, a condition that can also disrupt motivation. Reward and dopamine make us more ready to respond, as indexed by reaction times (RT), and move faster, sometimes termed vigour.
View Article and Find Full Text PDFNon-classical event-related potentials reveal attention network alteration in patients with temporal lobe epilepsy.
Int J Psychophysiol
December 2024
Department of Neurology, Xiangya Hospital of Central South University, Changsha, Hunan, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China. Electronic address:
Objective: To explore the characteristic changes of multiple ERP components associated with attention impairments in patients with temporal lobe epilepsy (TLE).
Methods: A total of 92 patients diagnosed with TLE at Xiangya Hospital during May 2022 and January 2023 and 85 healthy controls were included in this study. Participants were asked to complete attention network test with recording of electroencephalogram.
Want 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!