Heart rate and disjunctive reaction time: The effects of discrimination requirements.

1974 ◽  
Vol 103 (6) ◽  
pp. 1160-1168 ◽  
Author(s):  
Connie C. Duncan-Johnson ◽  
Michael G. H. Coles
Keyword(s):  
Heart Rate ◽  
Reaction Time

Anticipatory Heart Rate Deceleration and Reaction Time in Children with and without Referral for Learning Disability

1973 ◽  
Vol 44 (2) ◽  
pp. 267 ◽  
Author(s):  
L. Alan Sroufe ◽  
Barbara C. Sonies ◽  
Winifred D. West ◽  
Francis S. Wright
Keyword(s):  
Heart Rate ◽  
Reaction Time ◽  
Learning Disability ◽  
Heart Rate Deceleration ◽  
Rate Deceleration

scholarly journals Acute Effects of Salvia Supplementation on Cognitive Function in Athletes During a Fatiguing Cycling Exercise: A Randomized Cross-Over, Placebo-Controlled, and Double-Blind Study

2021 ◽  
Vol 8 ◽  
Author(s):  
Nicolas Babault ◽  
Ahmad Noureddine ◽  
Nicolas Amiez ◽  
Damien Guillemet ◽  
Carole Cometti
Keyword(s):  
Heart Rate ◽  
Reaction Time ◽  
Cognitive Function ◽  
Stroop Task ◽  
Perceived Exertion ◽  
Digit Span ◽  
Acute Effects ◽  
Warm Up ◽  
Positive Effects ◽  
Fatiguing Exercise

Background:Salvia (sage) supplementation has been shown to improve the cognition function in healthy individuals or patients (e.g., attention, memory). To date, no study has explored its relevancy in the context of sporting performance. The aim of this study was to explore the acute effects of a combination of Salvia officinalis and Salvia lavandulaefolia on cognitive function in athletes performing a fatiguing cycling task.Methods: Twenty-six volunteers were included in this cross-over, randomized, double-bind vs. placebo trial. Two hours before the two experimental sessions (here called SAGE and PLACEBO), volunteers randomly received a supplementation of sage or placebo. During each experimental session, participants were tested at four occasions while cycling during a warm-up, in the middle and at the end of a fatiguing task and after a short 5-min recovery. Tests included a Stroop task, a simple reaction time task, and a backward digit span memory task. Heart rate and rating of perceived exertion (RPE) were also measured at the beginning of the four test sessions.Results: Heart rate was significantly greater during the fatiguing exercise than during warm-up and recovery (P < 0.001) without any supplementation effect. RPE was greater during the fatiguing exercise than during warm-up and recovery (P < 0.001). Moreover, RPE was significantly lower during the SAGE session as compared to PLACEBO (P = 0.002). Reaction time was not altered during the exercise but was significantly shorter with SAGE as compared to PLACEBO (P = 0.023). The Stroop task only revealed significantly longer reaction time during warm-up as compared to recovery (P = 0.02) independently of the supplementation. The digit span memory test revealed a significant greater span score with SAGE as compared to PLACEBO (P = 0.044).Conclusion: The combination of Salvia improved the cognitive functions (perceived exertion, working memory, and reaction time). The positive effects were obtained in fresh condition and were maintained with fatigue.

Heart Rate, Recall, and Reaction-Time Measures of Levels of Processing

1978 ◽  
Vol 46 (1) ◽  
pp. 187-198 ◽  
Author(s):  
L. M. Shangi ◽  
J. P. Das ◽  
R. Mulcahy
Keyword(s):  
Heart Rate ◽  
Reaction Time ◽  
Semantic Processing ◽  
Heart Rate Change ◽  
Levels Of Processing ◽  
Independent Evidence ◽  
Rate Acceleration ◽  
Learning Conditions ◽  
Intentional Condition ◽  
Incidental Condition

A problem of circularity emerges in any attempt to index depth by retention alone. In the present study, reaction time (RT), and heart-rate response were used to index the three qualitatively distinct levels of physical, phonemic, and semantic processing. An additional objective was to distinguish between the three levels under incidental vs intentional learning conditions. Subjects were 46 male undergraduates who were given 30 trials. A trial consisted of the presentation of an orienting question and an imperative word-stimulus separated by a 6-sec. interval. There were three types of questions in order to induce processing to one of the three target levels. The results indicated that recall as well as heart-rate acceleration distinguished between two (physical vs phonemic and semantic) rather than three levels of processing in the incidental condition. Heart-rate change differentiated between incidental and intentional, the intentional condition showing a smaller change. Semantic and phonemic RTs were faster than physical RT, but there were no differences between semantic and phonemic RTs. Intentional recall was superior to incidental recall. It is suggested that psychophysiological indices can provide independent evidence for ‘levels of processing.’

scholarly journals Comparative Study of Heart Rate, Blood Pressure and Selective Attention of Subjects Before and After Music

2019 ◽  
Vol 4 (1) ◽  
pp. 625-628
Author(s):  
Nisha Ghimire ◽  
Renu Yadav ◽  
Soumitra Mukhopadhyay
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Reaction Time ◽  
Comparative Study ◽  
Error Correction ◽  
Vital Signs ◽  
Stroop Test ◽  
Before And After ◽  
Paired T Test ◽  
After Error

Introduction: Studies have shown different views regarding the effect of music in vitals e.g Heart rate (HR), Blood pressure (BP) and atiention. The effect of preferred music with lyrics in vitals and reaction time in stroop test has not been performed in Nepalese students so, we conducted the study. Objective: To find out the change in HR, BP and reaction time in Stroop test before and after their preferred music with lyrics. Methodology Thirty male medical and paramedical students aged 25.27 ± 2.0 participated in study. The vital signs and reaction time in Stroop test before and after music was taken. Results Paired-t test was used to compare means before and after exposure to music. The means are expressed as Mean ± SD. Heart rate (HR) increased after exposure to music (66.33±9.51 Vs 67.2±8.44) (p<.05). The error in Stroop test was less after music (.66±.49 Vs.63±.66) (p<.05). The reaction time after error correction decreased post exposure to music (24.117±4.61Vs23.29±4.45) (p<.05). Conclusion The heart rate increased after exposure to music. The errors decreased after listening to music which also decreased reaction time.

Window view of nature after brief exercise improves choice reaction time and heart rate restoration

2020 ◽  
Vol 58 ◽  
pp. 100781
Author(s):  
Thomas Engell ◽  
Håvard W. Lorås ◽  
Hermundur Sigmundsson
Keyword(s):  
Heart Rate ◽  
Reaction Time ◽  
Choice Reaction Time

Locus of Control and Cardiac Response to Reaction Time, Mental Arithmetic, and Time-Estimation Tasks

1978 ◽  
Vol 46 (3_suppl) ◽  
pp. 1199-1208 ◽  
Author(s):  
Dennis Runcie ◽  
John S. Graham ◽  
Mary L. Shelton
Keyword(s):  
Heart Rate ◽  
Reaction Time ◽  
Locus Of Control ◽  
Performance Measures ◽  
Mental Arithmetic ◽  
Cognitive Styles ◽  
Time Estimation ◽  
Cardiac Response ◽  
Task Involvement ◽  
Cardiac Conditioning

In Exp. 1 subjects, classified on the basis of locus of control scores, performed both reaction time and mental arithmetic tasks. In Exp. 2, similarly classified subjects were required to estimate the duration of a signal with feedback following each trial. Between-groups comparisons in Exp. 1 showed no differences on heart rate or performance measures. This does not support an explanation of differential heart rates during cardiac conditioning based upon cognitive styles of “rejecting” or “accepting” stimuli. Similar comparisons in Exp. 2 indicated significant differences for heart rate and proficiency in time estimation. These differences suggest greater task involvement for internally controlled subjects on feedback tasks, with cardiac acceleration a function of that involvement.

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