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Comparison of cognitive performance before and after the presentation of different levels of noise in the employees of light vessels operating in the Persian Gulf
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Mohsen Eskandari *    , Mohammadhossein Zarghami , Majid Azizi , Ehsan Eskandari |
| Marine Medicine Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran , psy.eskandari@gmail.com |
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Abstract: (953 Views) |
Background and Aim: The necessity of maintaining effective cognitive function for the employees of ships is much more than for sedentary and low-risk jobs. The present study was conducted with the aim of comparing the cognitive performance before and after presenting different levels of noise in the employees of light vessels operating in the Persian Gulf.
Methods: The current causal-comparative study was conducted in the first half of 1400 in the southern region of the country. The statistical population of the present study was all the employees of light vessels active in the Persian Gulf, and 15 people were placed in three groups with different noise ranges using the available sampling method. Posner's visual attention test was performed in the pre-test for all sample subjects. Then people of different buoyancy classes were then exposed to different noise ranges, and immediately after receiving the noise, the participants' Posner visual attention test was taken again. Data were analyzed using SPSS software.
Results: The mean age of the subjects was 23.94 with a standard deviation of 3.25. The results showed that all components of the cognitive function of watchtower staff are different in both situations before and after exposure to sound. The results showed that the correct time response and the number of correct responses of individuals after the presentation of noise had a significant decrease and the reaction of the wrong time and the number of incorrect responses increased significantly.
Conclusion: The results showed that exposure to acoustic vibrations at different frequencies affects selective attention and weakens the reaction time of correct responses. |
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| Keywords: Cognitive Function, Time Response, Sound, Watchtower |
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Full-Text [PDF 435 kb]
(219 Downloads)
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Type of Study: Original Article |
Subject:
Marine Medicine
Received: 2022/11/12 | Accepted: 2024/06/16 | Published: 2024/05/30
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