Cognitive performance exhibits patterns of trial-to-trial variation that can be described as 1/f or pink noise, as do repeated measures of locomotor performance. Although cognitive and locomotor performances are known to interact when performed concurrently, it is not known whether concurrent performance affects the tasks' pink noise dynamical structure. In this study, participants performed a cognitive task (repeatedly producing a temporal interval) and a motor task (walking on a treadmill) in single- and dual-task conditions. In single-task conditions both tasks exhibited pink noise structure. For concurrent performance the dynamical structure of the cognitive task changed reliably in the direction of white (random) noise. The dynamical structure of locomotion remained pink noise. The change in cognitive dynamics occurred despite no reliable changes in mean or standard deviation measures for either task. The results suggest a functional reorganization of cognitive dynamics supporting successful task performance in dual-task conditions.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1037/a0013546 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A comparative evaluation of the effects of white noise, brown noise, and pink noise on dental anxiety of pediatric patients undergoing dental extraction treatment: A randomized control study.
J Indian Soc Pedod Prev Dent
October 2024
Department of Paediatric and Preventive Dentistry, ACPM Dental College, Dhule, Maharashtra, India.
Background: Audio-analgesia is one of the unexplored aspects of behavior management in pediatric dentistry, and recently, there have been many new inclusions in shades of noise that were previously just limited to white noise, like brown noise and pink noise.
Aim: The aim of the study was to evaluate and compare the effectiveness of white noise, brown noise, and pink noise on dental anxiety in pediatric patients undergoing primary tooth extraction.
Study Settings And Design: Multiarm, triple-blinded, parallel-group randomized controlled trial.
Cost-Reference Particle Filter-Based Method for Constructing Effective Brain Networks: Application in Optically Pumped Magnetometer Magnetoencephalography.
Bioengineering (Basel)
December 2024
Key Laboratory of Ultra-Weak Magnetic Field Measurement Technology, Ministry of Education, School of Instrumentation and Optoelectronic Engineering, Beihang University, 37 Xueyuan Rd., Haidian District, Beijing 100083, China.
Optically pumped magnetometer magnetoencephalography (OPM-MEG) represents a novel method for recording neural signals in the brain, offering the potential to measure critical neuroimaging characteristics such as effective brain networks. Effective brain networks describe the causal relationships and information flow between brain regions. In constructing effective brain networks using Granger causality, the noise in the multivariate autoregressive model (MVAR) is typically assumed to follow a Gaussian distribution.
View Article and Find Full Text PDFEffects of individually calibrated white and pink noise vestibular stimulation on standing balance of young healthy adults.
Exp Brain Res
December 2024
Motor Behavior and Adapted Physical Activity Laboratory, Aristotle University, Thessaloniki, Greece.
Imperceptible noisy galvanic vestibular stimulation (nGVS) improves standing balance due to the presence of stochastic resonance (SR). There is, however, a lack of consensus regarding the optimal levels and type of noise used to elicit SR like dynamics. We aimed to confirm the presence of SR behavior in the vestibular system of young healthy adults by examining postural responses to increasing amplitudes of white and pink noise stimulation scaled to individual cutaneous perceptual threshold.
View Article and Find Full Text PDFAutomated pure-tone audiometry using true wireless stereo earbuds with active noise control.
Int J Audiol
December 2024
Acoustics Laboratory, School of Physics and Optoelectronics, South China University of Technology, Guangzhou, China.
Objective: Automated pure-tone audiometry (PTA) conducted outside a sound booth is heavily affected by environmental noise. This study aims to evaluate the performance of an automated PTA system, employing commercially available true wireless stereo earbuds with active noise cancellation (ANC) in noisy environments.
Design: The electroacoustic characteristics of earbuds are thoroughly evaluated.
Better power by design: Permuted-subblock randomization boosts power in repeated-measures experiments.
Psychol Methods
December 2024
School of Psychology & Neuroscience, University of Glasgow.
Article Synopsis
- - Participants in experiments adapt due to factors like learning and fatigue, which can influence measurement accuracy and reduce statistical power.
- - A new method, called permuted-subblock randomization (PSR), helps improve statistical power by balancing conditions throughout an experimental session, demonstrated through Monte Carlo simulations.
- - PSR increased power by an average of 13%, with some designs seeing boosts up to 45%, while maintaining control over false positives when there was no time-dependent variation; an R package named "explan" is available for implementing this method.
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!