Acute effects of noise exposure: an experimental investigation of the effects of noise and task parameters on cognitive vigilance tasks

1988 ◽  
Vol 60 (4) ◽  
pp. 307-310 ◽  
Author(s):  
Andrew P. Smith
Keyword(s):  
Experimental Investigation ◽  
Noise Exposure ◽  
Acute Effects ◽  
Task Parameters ◽  
And Task

scholarly journals Acute Effects of Night time Noise Exposure on Blood Pressure in Populations Living Near Airports

Epidemiology ◽  
2008 ◽  
Vol 19 (1) ◽  
pp. S213
Author(s):  
K Dimakopoulou ◽  
A Charalampidis ◽  
F Vigna-Taglianti ◽  
G Bluhm ◽  
D Houthuijs ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Noise Exposure ◽  
Acute Effects ◽  
Night Time

Investigating the Effect of Task Parameters on Force Exertion Rating of One-Handed Pulling Tasks

2018 ◽  
Vol 62 (1) ◽  
pp. 833-837
Author(s):  
Monica L. H. Jones ◽  
Sheila M. Ebert ◽  
Matthew P. Reed
Keyword(s):  
Body Size ◽  
Laboratory Study ◽  
Statistical Models ◽  
Subjective Rating ◽  
Force Magnitude ◽  
Numerical Rating ◽  
Task Parameters ◽  
And Task

Ergonomic and capability assessments are typically performed using guidelines derived using biomechanical, physiological and psychophysical approaches. In practice, these approaches yield different and often conflicting assessments. As part of an effort to reconcile these methods, a laboratory study was conducted to investigate the effects of varying force and task location requirements on the perception of force exertion. Sixteen women and men with widely varying body size provided a numerical rating of effort for one-hand pulling tasks in a range of handle locations. Vertical task handle location and force magnitude requirement were related to subjective rating of the force exertion. As a demonstration of the methodology, statistical models were developed from the data to predict the effect of changes in task parameters on the percentage of participants rating the exertion at a specified level.

scholarly journals Accuracy of performance-test linking based on a many-facet Rasch model

2020 ◽  
Author(s):  
Masaki Uto
Keyword(s):  
Performance Test ◽  
Performance Assessments ◽  
Task Characteristics ◽  
Model Parameters ◽  
Test Results ◽  
Irt Models ◽  
Test Linking ◽  
Rater Severity ◽  
Task Parameters ◽  
And Task

Abstract Performance assessments, in which human raters assess examinee performance in practical tasks, have attracted much attention in various assessment contexts involving measurement of higher-order abilities. However, difficulty persists in that ability measurement accuracy strongly depends on rater and task characteristics such as rater severity and task difficulty. To resolve this problem, various item response theory (IRT) models incorporating rater and task parameters, including many-facet Rasch models (MFRMs), have been proposed. When applying such IRT models to datasets comprising results of multiple performance tests administered to different examinees, test linking is needed to unify the scale for model parameters estimated from individual test results. In test linking, test administrators generally need to design multiple tests such that raters and tasks partially overlap. The accuracy of linking under this design is highly reliant on the numbers of common raters and tasks. However, the numbers of common raters and tasks required to ensure high accuracy in test linking remain unclear, making it difficult to determine appropriate test designs. We therefore empirically evaluate the accuracy of IRT-based performance-test linking under common rater and task designs. Concretely, we conduct evaluations through simulation experiments that examine linking accuracy based on a MFRM while changing numbers of common raters and tasks with various factors that possibly affect linking accuracy.

Monkey hippocampal neurons related to spatial and nonspatial functions

1993 ◽  
Vol 70 (4) ◽  
pp. 1516-1529 ◽  
Author(s):  
T. Ono ◽  
K. Nakamura ◽  
H. Nishijo ◽  
S. Eifuku
Keyword(s):  
Hippocampal Neurons ◽  
Visual Cues ◽  
Target Location ◽  
Hippocampal Formation ◽  
Human Movement ◽  
Neural Responses ◽  
Preferred Direction ◽  
Directional Stimulus ◽  
Task Parameters ◽  
And Task

1. Neural activity in the monkey hippocampal formation (HF) was analyzed during a spatial moving task in which the monkey was guided by auditory and visual cues and when stimuli were presented from various directions. The monkey could control a motorized, movable device (cab) and its route to a target location by pressing the proper one of five available bars in an appropriate sequence (spatial moving task). In any of several locations in the field, neural responses were evident in relation to the presentation of various objects or human movement in some relative direction (left, anterior, right) as a directional stimulus test. 2. Of 238 hippocampal neurons analyzed, 172 (72.3%, 238-66) responded in either the spatial moving task, or to the direction from which stimulation was presented, or to the location of the monkey in the field, or to some combination of these. 3. The activity of 79 (33.2%) neurons was higher when the monkey was in some specific location in the field during the spatial moving task, regardless of the approach route or other task parameters (place related neurons). 4. Responses to the task cues in the spatial moving task were evident in 110 (46.3%) neurons (task related neurons). Of these, 77 (32.4%) neurons were not place related. The remaining 33 (13.9%) neurons were both task related and place related. These neurons responded to task cues in only that part of the field in which place related responses occurred. The neural response to the task cues disappeared when the monkey moved out of the place response region. The place related and task related neural responses disappeared when the room light was switched off. Thus information from the environment outside of the cab contributed to the place related and task related responses. 5. Stimuli presented from certain specific directions induced responses, selectively, in 41 (17.2%) of the neurons (direction related neurons). The dependence of the preferred direction was described in one of three ways--egocentric, allocentric, or place-direction specific. Nineteen egocentric neurons responded to a stimulus only when it was presented from a certain direction relative to the orientation of the monkey, regardless of the location of the monkey. Eleven allocentric neurons responded to a stimulus only when it was presented at a particular position in the room, regardless of the location or orientation of the monkey.(ABSTRACT TRUNCATED AT 400 WORDS)

scholarly journals 0240 Acute Effects of Occupational Noise Exposure on 24-Hour Ambulatory Cardiac Parameters in Workers

2014 ◽  
Vol 71 (Suppl 1) ◽  
pp. A91.2-A91
Author(s):  
Ta-Yuan Chang ◽  
Ya-Yun Wu ◽  
Ven-Shing Wang ◽  
Chang-Chuan Chan ◽  
Chiu-Shong Liu
Keyword(s):  
Noise Exposure ◽  
Occupational Noise ◽  
Acute Effects ◽  
Occupational Noise Exposure

The effect of dynamic correlated colour temperature changes on alertness and performance

2018 ◽  
Vol 50 (7) ◽  
pp. 1070-1081 ◽  
Author(s):  
M Ye ◽  
SQ Zheng ◽  
ML Wang ◽  
M Ronnier Luo
Keyword(s):  
Task Performance ◽  
Human Performance ◽  
Temperature Cycle ◽  
Acute Effects ◽  
Temperature Changes ◽  
Colour Temperature ◽  
Cycle Times ◽  
Circadian Phase ◽  
And Performance ◽  
And Task

Light can have acute effects on human performance, including task performance, alertness and circadian phase shift. Most studies have investigated these effects using static light. This study investigates the effects of dynamic light with different cycle times and different ranges of correlated colour temperature on human alertness and task performance. Ten participants took part in the experiment using six conditions of dynamic light with each observing session lasting 4.5 hours. An electroencephelogram, measurements of critical flicker frequency, performance on various cognitive tasks and alertness and sleepiness questionnaires were used to evaluate the human responses. The results showed that participants appeared more alert and performed better under lighting of higher correlated colour temperature range but different correlated colour temperature cycle times had little effect.

No lexical competition without priming: Evidence from the picture–word interference paradigm

2018 ◽  
Vol 71 (12) ◽  
pp. 2562-2570 ◽  
Author(s):  
Hanna S Gauvin ◽  
Magdalena K Jonen ◽  
Jessica Choi ◽  
Katie McMahon ◽  
Greig I de Zubicaray
Keyword(s):  
Interference Effect ◽  
Picture Naming ◽  
Interference Effects ◽  
Lexical Competition ◽  
Semantic Interference ◽  
The Past ◽  
Task Parameters ◽  
Naming Latencies ◽  
And Task

Over the past 40 years, researchers have assumed that semantic interference effects in picture naming reflect competition among lexical candidates during retrieval. In this study, we examined the role of the familiarisation phase in which participants are shown the target pictures and required to rehearse the appropriate names before the picture–word interference (PWI) paradigm is performed. A previous study reported that omitting the familiarisation phase reversed the polarity of the semantic effect to facilitation. In two experiments using between- and within-participants design, respectively, we compared PWI performance with and without familiarisation while using matched stimuli and task parameters. Overall, the results showed the typical semantic interference effect following familiarisation. However, in both experiments, naming latencies did not differ significantly between related and unrelated distractors when familiarisation was omitted. The current findings suggest that familiarisation plays an important role in determining semantic interference in PWI, most likely via raising lexical competitor activation by priming links between targets and related concepts. We also discuss broader implications of our findings with respect to the replicability of reported semantic facilitation effects in PWI.

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