scholarly journals Early, low-level auditory-somatosensory multisensory interactions impact reaction time speed

2009 ◽  
Vol 3 ◽  
Author(s):  
Holger F. Sperdin
Keyword(s):  
Reaction Time ◽  
Low Level ◽  
Multisensory Interactions

NASP re-entry profile: Effects of low-level +gz on reaction time, keypad entry, and reach error.

1992 ◽  
Author(s):  
Kathy McCloskey ◽  
William B. Albery ◽  
Greg Zehner ◽  
Stephen D. Bolia
Keyword(s):  
Reaction Time ◽  
Low Level

scholarly journals Low-level electrical currents and brain indicators of behavioral activation

1977 ◽  
Vol 35 (4) ◽  
pp. 325-328 ◽  
Author(s):  
F. Lolas ◽  
V. Combeau
Keyword(s):  
Reaction Time ◽  
Functional Role ◽  
Behavioral Activation ◽  
Human Subjects ◽  
Reaction Time Task ◽  
Electrical Currents ◽  
Brain Potential ◽  
Low Level ◽  
Time Task

Distinguishing between slow brain potential correlates of arousal and activation on the basis of their functional role and temporal involvement during a reaction-time task, data are presented which suggest that weak electrical polarizing currents applied to the head in human subjects modify predominantly activation indicators rather than arousal ones.

scholarly journals Grabbing Your Ear: Rapid Auditory–Somatosensory Multisensory Interactions in Low-level Sensory Cortices Are Not Constrained by Stimulus Alignment

2004 ◽  
Vol 15 (7) ◽  
pp. 963-974 ◽  
Author(s):  
Micah M. Murray ◽  
Sophie Molholm ◽  
Christoph M. Michel ◽  
Dirk J. Heslenfeld ◽  
Walter Ritter ◽  
...  
Keyword(s):  
Low Level ◽  
Multisensory Interactions ◽  
Sensory Cortices

Processing of Alphabetic Information Presented in the Fovea or the Periphery: Functional Visual Field and Cognitive Load

Perception ◽  
1981 ◽  
Vol 10 (6) ◽  
pp. 645-650 ◽  
Author(s):  
Leonard J Williams ◽  
Lester A Lefton
Keyword(s):  
Reaction Time ◽  
Visual Field ◽  
Cognitive Load ◽  
Visual Angle ◽  
Load Level ◽  
Retinal Eccentricity ◽  
Time Study ◽  
Low Level ◽  
The Past ◽  
Level Information

In a tachistoscopic reaction-time study that required subjects to respond ‘same’ or ‘different’ to vertically arrayed letter pairs, it was found that cognitive load (level of required match) and retinal eccentricity were both potent variables. It seems that subjects can process low-level information (physical matches) quite effectively out to at least 7 deg visual angle from fixation, in either direction. It was also demonstrated that higher-level processing may proceed fairly efficiently out to at least 4 deg from fixation. These estimates suggest that the abilities of the information processor to deal effectively with the periphery may have been underestimated in the past.

REACTION TIME AND INTELLIGENCE

1991 ◽  
Vol 1 (1) ◽  
pp. 211-221 ◽  
Author(s):  
Edward Neçka
Keyword(s):  
Reaction Time

Tryptophan-Niacin Metabolism in Rat with Puromycin Aminonucleoside-Induced Nephrosis

2006 ◽  
Vol 76 (1) ◽  
pp. 28-33 ◽  
Author(s):  
Yukari Egashira ◽  
Shin Nagaki ◽  
Hiroo Sanada
Keyword(s):  
Body Weight ◽  
Urinary Excretion ◽  
Enzyme Activities ◽  
Treated Group ◽  
Control Group ◽  
Puromycin Aminonucleoside ◽  
Low Level ◽  
Key Enzyme

We investigated the change of tryptophan-niacin metabolism in rats with puromycin aminonucleoside PAN-induced nephrosis, the mechanisms responsible for their change of urinary excretion of nicotinamide and its metabolites, and the role of the kidney in tryptophan-niacin conversion. PAN-treated rats were intraperitoneally injected once with a 1.0% (w/v) solution of PAN at a dose of 100 mg/kg body weight. The collection of 24-hour urine was conducted 8 days after PAN injection. Daily urinary excretion of nicotinamide and its metabolites, liver and blood NAD, and key enzyme activities of tryptophan-niacin metabolism were determined. In PAN-treated rats, the sum of urinary excretion of nicotinamide and its metabolites was significantly lower compared with controls. The kidneyα-amino-β-carboxymuconate-ε-semialdehyde decarboxylase (ACMSD) activity in the PAN-treated group was significantly decreased by 50%, compared with the control group. Although kidney ACMSD activity was reduced, the conversion of tryptophan to niacin tended to be lower in the PAN-treated rats. A decrease in urinary excretion of niacin and the conversion of tryptophan to niacin in nephrotic rats may contribute to a low level of blood tryptophan. The role of kidney ACMSD activity may be minimal concerning tryptophan-niacin conversion under this experimental condition.

Modeling Within-Person Variance in Reaction Time Data of Older Adults

GeroPsych ◽  
2011 ◽  
Vol 24 (4) ◽  
pp. 169-176 ◽  
Author(s):  
Philippe Rast ◽  
Daniel Zimprich
Keyword(s):  
Reaction Time ◽  
Cognitive Aging ◽  
Reaction Times ◽  
Reaction Time Task ◽  
Reaction Time Data ◽  
Scale Model ◽  
Time Data ◽  
Time Task ◽  
The Mean ◽  
Second Wave

In order to model within-person (WP) variance in a reaction time task, we applied a mixed location scale model using 335 participants from the second wave of the Zurich Longitudinal Study on Cognitive Aging. The age of the respondents and the performance in another reaction time task were used to explain individual differences in the WP variance. To account for larger variances due to slower reaction times, we also used the average of the predicted individual reaction time (RT) as a predictor for the WP variability. Here, the WP variability was a function of the mean. At the same time, older participants were more variable and those with better performance in another RT task were more consistent in their responses.

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