جستجوی مقالات مرتبط با کلیدواژه « آزمون عملکرد پیوسته » در نشریات گروه « پزشکی »

Noise pollution, as an unwanted and annoying sound that can negatively impact human health and well-being, has become one of the major environmental problems in the world. This type of pollution not only disrupts peace and comfort but can also have serious consequences for human physical and mental health. Despite the importance of the issue of exposure to harmful physical factors and their impact on health, few studies have been conducted on traffic noise based on the conditions in Iranian cities. Considering the importance of urban traffic noise, the lack of domestic studies on its characteristics and how it affects the cognitive and physiological performance of exposed individuals, and its importance and decisive role in the occurrence of errors and mental functions, this research aimed to investigate the physiological and mental performance in exposure to traffic noise pollution in Sari city.

This quasi-experimental intervention study was conducted in the summer of 1401 (2023) on 40 students of Mazandaran University of Medical Sciences. To minimize confounding factors, the inclusion criteria were as follows: age range of 20-30 years, normal hearing (hearing loss less than 25 dB), and no history of taking specific medications. All experiments were conducted in an acoustic chamber measuring 3 by 2 meters with a temperature of 23°C, humidity of 50%, and illuminance of 400 lux. Physiological parameters (heart rate, blood pressure, and core body temperature) were measured in acoustic comfort and traffic noise exposure conditions. Cognitive performance was assessed using the Continuous Performance Test (CPT) in exposure and non-exposure conditions. The structural correlation of this test was estimated by the researchers to be 0.89. Data analysis was performed using descriptive and analytical tests in SPSS v24.

According to the findings, 52% of the students studied were female. The mean age of the participants was 24.23 years with a standard deviation of 4.99 years, a minimum of 19 years, and a maximum of 38 years. 76.3% of the participants were single and 23.7% were married. Based on the exposure results, the average sound pressure level of traffic noise in the exposure group was reported as 75.45±0.11 dBA. It was observed that the heart rate and core temperature of the exposure group increased significantly (P<0.05). The average error (omission and commission) between the control and exposure groups had a significant difference and the average of these variables was lower in the control group. Also, the reaction time in the exposed condition had a significant difference with the non-exposed condition (P<0.05).

With the rapid growth of urbanization and the increasing density of traffic on roads and streets, noise pollution from traffic has become an unavoidable problem in modern societies, inevitably impacting human health and safety. because of the importance of traffic noise and the inevitable encounter with it, can be considered very important in terms of health aspects and occurrence of safety consequences. Therefore, paying attention to traffic noise exposure, human performance status, and influencing factors through investigations and research is necessary.

Noise is one of the most harmful physical factors in workplaces in both developed and developing countries. Still, low-frequency noise has not received enough attention, and the current regulations on its control are inadequate. To address this issue, the present study was conducted to examine the physiological response and cognitive functions of individuals before and after exposure to low-frequency noise.

This study was conducted in the solar year 1401 and involved 40 students from Mazandaran University of Medical Sciences. Low-frequency noise with a level of 65 dB A was played for one hour. The patients' heart rates, blood pressure, and core temperatures were collected before and after exposure to low-frequency noise. Moreover, the continuous performance test was used to examine their cognitive performance. The data was analyzed using the Friedman and Voilcoxon tests in SPSS 25 software.

Low-frequency noise adversely impacted individual cognitive performance, increasing response error, omission error, and reaction time. However, according to the Wilcoxon test, only the increase in reaction time was statistically significant (P<0.05). Additionally, there was no significant difference in the individual's physiological indicators before and after exposure (P>0.05).

Exposure to low-frequency noise generates greater discomfort than background noise with the same intensity level and has adverse effects on the individual's performance. Thus, the adverse effects of low-frequency noise are particularly significant in workstations that require mental processing of information and specific attention, such as control rooms and offices.

Cognitive dysfunction in multiple sclerosis patients is one of the most problematic issues in this group of patients. These symptoms affect these people's life habits and daily routines. This study compared cognitive functioning in patients with multiple sclerosis with healthy people.
In this causal-comparative study a total of 30 multiple sclerotic patients and 30 healthy people counterparts were selected through convenience sampling. Card Sorting Test Tower of London, Wechsler intelligence test and span of attention and continuous performance test were used. The data were analyzed using multivariate analysis of variance with SPSS version 21 software.
Patients with multiple sclerosis scored significantly lower in continuous performance test, the Tower of London card sorting test and the revised Wechsler scale compared with normal, healthy population so the mean scores on the three tests were significantly different in two groups (p Patients with multiple sclerosis have lower cognitive performance than normal population so cognitive functioning improvements should be highly considered in rehabilitation planning of multiple sclerosis patients.

Attention Deficit Hyperactivity Disorder (ADHD) is described by a pattern decreased attention, hyperactivity and impulsivity that usually started in childhood and remain until adulthood. Primary signs of ADHD is treated by medical drugs but other signs, is treatable with combination of approaches. Last researches have adopted software technology like computer games on distraction and limb movement performance. The present study was done about effectiveness of computer games on level of attention in 7 to 12 aged children with ADHD.

In this research, 18 children with ADHD who refer to psychiatric department of Imam Reza Clinic in Shiraz, selected and assigned semi randomly in two groups; control group and intervention group. Children in intervention group received computer games intervention program for 14 sessions lasting 40 minutes each. A Continues Performance Test (CPT) was used before and after intervention phase to test level of attention. Descriptive statistics and Spearman's correlation coefficient were calculated for statistical analysis of the data using SPSS software version 16.

In this research four factor in Continuous Performance Test, the number of correct responses, impulsivity errors, commission and reaction time are presented and analyzed. Statistical results showed significant different on reaction time factor on interventional group after intervention (P=0/02) but in other factors there was not significant different between intervention groups.

The results of this study showed that the computer games intervention had a significant impact on the factors of attention of the continuous performance test and the only factor that has improved after intervention was ADHD children's reaction time in the intervention group.