Leelabai Bhavisha Sreenivasan, Krishnan Prabhavathi, Deivendran Gunaseelan, Sarathivarman Sivaranjani, Kanagaraj Thamarai Selvi, Ayyavoo Saravanan, Periasamy Panneerselvam
Department of Physiology, SRM Medical College Hospital and Research Centre, Kattankulathur, Tamil Nadu, India.
Department of Physiology, Govt Erode Medical College, Erode, Tamil Nadu, India.
J Pharm Bioallied Sci. 2025 Apr-Jun;17(2):90-92. doi: 10.4103/jpbs.jpbs_1057_25. Epub 2025 Jul 23.
The proliferation of smartphones has rendered them essential to contemporary existence, thereby augmenting the duration of exposure to light emitted from screens. This phenomenon engenders significant public health considerations, as sustained usage is correlated with deleterious physical and psychological health outcomes, which include sleep disturbances, visual fatigue, and cognitive deficits, particularly among university students. In light of these hazards, this investigation aims to elucidate the effects of smartphone utilization on cognitive performance, with a specific focus on reaction time.
To assess visual reaction time (VRT) and auditory reaction time (ART) among medical students who engage in regular smartphone usage.
A cross-sectional analysis was performed at SRM Medical College and Hospital, Kattankulathur, encompassing participants aged 18-25 years. VRT and ART were quantified before and subsequent to smartphone engagement utilizing a digital chronoscope. Subjects participated in two ART and three VRT assessments. Informed consent was acquired before the commencement of testing.
Both ART and VRT exhibited a statistically significant increase following smartphone engagement, signifying prolonged reaction times and a potential decline in cognitive function. These outcomes imply that excessive screen exposure may detrimentally affect mental acuity and reaction velocity.
Extended smartphone engagement adversely influences cognitive performance, as manifested by protracted reaction times. It is imperative that medical students and the broader populace receive education regarding the potential dangers associated with excessive screen exposure. Mitigating usage is essential for the preservation of cognitive health and overall mental well-being.
智能手机的普及使其成为当代生活不可或缺的一部分，从而增加了人们接触屏幕发出光线的时长。这一现象引发了重大的公共卫生问题，因为持续使用智能手机与有害的身心健康后果相关，包括睡眠障碍、视觉疲劳和认知缺陷，在大学生中尤为明显。鉴于这些危害，本研究旨在阐明智能手机使用对认知表现的影响，特别关注反应时间。
评估经常使用智能手机的医学生的视觉反应时间（VRT）和听觉反应时间（ART）。
在卡特坦库勒瑟的SRM医学院及医院进行了一项横断面分析，研究对象为年龄在18至25岁之间的参与者。使用数字计时器在使用智能手机前后对VRT和ART进行量化。受试者参加了两次ART评估和三次VRT评估。在测试开始前获得了知情同意。
使用智能手机后，ART和VRT均出现了具有统计学意义的增加，这表明反应时间延长，认知功能可能下降。这些结果意味着过度的屏幕暴露可能会对思维敏锐度和反应速度产生不利影响。
长时间使用智能手机会对认知表现产生不利影响，表现为反应时间延长。医学生及广大民众必须接受有关过度屏幕暴露潜在危险的教育。减少使用时间对于维护认知健康和整体心理健康至关重要。
