The relationship between latency of auditory evoked potentials, simple reaction time, and stimulus intensity

1994 ◽  
Vol 56 (2) ◽  
pp. 59-65 ◽  
Author(s):  
Piotr Jaskownki ◽  
Krzysztof Rybarczyk ◽  
Feliks Jaroszyk
Keyword(s):  
Reaction Time ◽  
Evoked Potentials ◽  
Stimulus Intensity ◽  
Simple Reaction Time ◽  
Auditory Evoked Potentials ◽  
Simple Reaction ◽  
The Relationship

Effects of preknowledge and stimulus intensity upon simple reaction time.

1973 ◽  
Vol 101 (1) ◽  
pp. 109-115 ◽  
Author(s):  
Jeffrey M. Speiss
Keyword(s):  
Reaction Time ◽  
Stimulus Intensity ◽  
Simple Reaction Time ◽  
Simple Reaction

Gamma oscillations are involved in the sensorimotor transformation of pain

2012 ◽  
Vol 108 (4) ◽  
pp. 1025-1031 ◽  
Author(s):  
Enrico Schulz ◽  
Laura Tiemann ◽  
Viktor Witkovsky ◽  
Paul Schmidt ◽  
Markus Ploner
Keyword(s):  
Reaction Time ◽  
Simple Reaction Time ◽  
Motor Response ◽  
Reaction Times ◽  
Gamma Oscillations ◽  
Simple Reaction Time Task ◽  
Sensorimotor Transformation ◽  
Healthy Human ◽  
Simple Reaction ◽  
The Relationship

Pain signals threat and initiates motor responses to avoid harm. The transformation of pain into a motor response is thus an essential part of pain. Here, we investigated the neural mechanisms subserving the sensorimotor transformation of pain at the cortical level by using electroencephalography. In a simple reaction time experiment, brief painful stimuli were delivered to the left hand of healthy human subjects who responded with button presses of the right hand. The results show that the simple reaction time task was associated with neuronal responses at delta/theta, alpha/beta, and gamma frequencies. The analysis of the relationship between neuronal activity and response speed revealed that gamma oscillations, which were temporally coupled to the painful stimuli, but not temporally coupled to the motor response, predicted reaction times. Lateralization of gamma oscillations indicates that they originate from motor areas rather than from sensory areas. We conclude that gamma oscillations are involved in the sensorimotor transformation of pain whose efficiency they reflect. We hypothesize that the relationship between stimulus-locked gamma oscillations and reaction times reflects a direct thalamo-motor route of nociceptive information that is central to the biological function of pain.

scholarly journals The Relationship between Blood Lead Levels and Neurobehavioral Test Performance in NHANES III and Related Occupational Studies

2005 ◽  
Vol 120 (3) ◽  
pp. 240-251 ◽  
Author(s):  
Edward F. Krieg ◽  
David W. Chrislip ◽  
Carlos J. Crespo ◽  
W. Stephen Brightwell ◽  
Richard L. Ehrenberg ◽  
...  
Keyword(s):  
Reaction Time ◽  
Test Performance ◽  
Simple Reaction Time ◽  
Blood Lead ◽  
Blood Lead Levels ◽  
Minimum Concentration ◽  
Simple Reaction ◽  
Lead Levels ◽  
And Performance ◽  
The Relationship

Objectives. The goals of this study were two-fold: ( 1) to assess the relationship between blood lead levels and neurobehavioral test performance in a nationally representative sample of adults from the third National Health and Nutrition Evaluation Survey and ( 2) to analyze the results from previously published studies of occupational lead exposure that used the same neurobehavioral tests as those included in the survey. Methods. Regression models were used to test and estimate the relationships between measurements of blood lead and performance on a simple reaction time, a symbol-digit substitution, and a serial digit learning test in adults aged 20–59 years who participated the survey. Mixed models were used to analyze the data from the occupational studies. Results. The blood lead levels of those participating in the survey ranged from 0.7 to 41.8 μg/dl. The estimated geometric mean was 2.51 μg/dl, and the estimated arithmetic mean was 3.30 μg/dl. In the survey, no statistically significant relationships were found between blood lead concentration and performance on the three neurobehavioral tests when adjusted for covariates. In the occupational studies, the groups exposed to lead consistently performed worse than control groups on the simple reaction time and digit-symbol substitution tests. Conclusions. The results from the survey and the occupational studies do not provide evidence for impairment of neurobehavioral test performance at levels below 25 μg/dl, the concentration that the Centers for Disease Control and Prevention define as elevated in adults. The average blood lead level of the exposed groups in the occupational studies was 41.07 μg/dl, less than 50 μg/dl, the minimum concentration that the Occupational Safety and Health Administration requires for medical removal from the workplace. Given the evidence of impaired neurobehavioral performance in these groups, the 50 μg/dl limit should be reevaluated.

THE RELATIONSHIP BETWEEN PHYSIQUE AND SIMPLE REACTION TIME

1943 ◽  
Vol 12 (1) ◽  
pp. 46-53 ◽  
Author(s):  
HENRY CLAY SMITH ◽  
SAUL BOYARSKY
Keyword(s):  
Reaction Time ◽  
Simple Reaction Time ◽  
Simple Reaction ◽  
The Relationship

Effects of false feedback and stimulus intensity on simple reaction time.

1971 ◽  
Vol 90 (2) ◽  
pp. 287-292 ◽  
Author(s):  
Kerm Henriksen
Keyword(s):  
Reaction Time ◽  
Stimulus Intensity ◽  
Simple Reaction Time ◽  
False Feedback ◽  
Simple Reaction

Simple reaction time as a function of stimulus intensity in decibels of light and sound.

1971 ◽  
Vol 88 (2) ◽  
pp. 251-257 ◽  
Author(s):  
David L. Kohfeld
Keyword(s):  
Reaction Time ◽  
Stimulus Intensity ◽  
Simple Reaction Time ◽  
Simple Reaction

PS-29-5 The relationship between length of sleep time and simple reaction time in short sleep-wake cycle

1995 ◽  
Vol 97 (4) ◽  
pp. S157-S158
Author(s):  
S. Satani ◽  
K. Kuroda ◽  
N. Emura ◽  
M. Mandai ◽  
Y. Yoshida ◽  
...  
Keyword(s):  
Reaction Time ◽  
Simple Reaction Time ◽  
Sleep Time ◽  
Simple Reaction ◽  
Short Sleep ◽  
The Relationship

High order sequential effects and the negative gradient of the relationship between simple reaction-time and foreperiod duration

1975 ◽  
Vol 39 (4) ◽  
pp. 263-270 ◽  
Author(s):  
C.A. Possamaï ◽  
M. Granjon ◽  
G. Reynard ◽  
J. Requin
Keyword(s):  
Reaction Time ◽  
Simple Reaction Time ◽  
High Order ◽  
Sequential Effects ◽  
Simple Reaction ◽  
Foreperiod Duration ◽  
The Relationship ◽  
Negative Gradient
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