Effect of hyperbaric exposure on cognitive performance: an investigation conducting numerical Stroop tasks during a simulated 440 m sea water saturation diving.

IF 3.3 4区医学 Q1 PHYSIOLOGY

Journal of Physiological Anthropology Pub Date : 2024-10-07 DOI:10.1186/s40101-024-00366-3

Nozomu Kageyama, Takehito Sawamura

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引用次数: 0

Abstract

Background: Saturation diving (SD) is useful and safe in deep diving for long durations. Japan Maritime Self-Defense Force (JMSDF) Undersea Medical Center (UMC) maintained safely deep 45 ATA SDHowever, cognitive performance was reportedly impaired by hyperbaric exposure in over 31 atmosphere absolute (ATA) SD. This study investigated the effects of hyperbaric exposure during 45 ATA deep SD on expert divers' cognitive function using Stroop tasks, a useful method to examine cognitive function, especially in narrow spaces such as SD chambers.

Methods: Two numerical Stroop tasks were utilized to create two magnitude comparisons of a pair of single-digit numerical and physical tasks. Both numerical Stroop tasks were examined twice, at 1 and 45 ATAs, during a simulated 440 m of sea water depth for SD. Participants were 18 male expert JMSDF SD divers (age 36.58 ± 4.89 years).

Results: In the numerical task, reaction time (RT) was significantly delayed at 45 ATA compared with 1 ATA in the incongruent condition. In the physical task, RT at 45 ATA was significantly delayed under all the conditions (congruent, incongruent, and neutral). The correct rates (CR) in both numerical Stroop tasks significantly decreased at 45 ATA compared with 1 ATA in the incongruent condition.

Conclusions: Our findings suggest that divers' cognition is impaired during 45 ATA deep SD. These results emphasize the importance of monitoring cognition in deep sea SD and highlight the need to educate and train for SD. Further examination combining Stroop tasks with other analyses such as event-related potential (ERP) is expected.

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高压氧对认知能力的影响：在模拟 440 米海水饱和潜水过程中执行数字 Stroop 任务的研究。

背景：饱和潜水（SD）对长时间深潜非常有用且安全。日本海上自卫队（JMSDF）海底医疗中心（UMC）安全地维持着 45 ATA 的深潜，但据报道，在超过 31 个大气压绝对值（ATA）的深潜中，高压氧暴露会损害认知功能。本研究使用 Stroop 任务调查了在 45 ATA 深水自毁期间高压氧暴露对专业潜水员认知功能的影响：利用两个数字 Stroop 任务对一对个位数数字任务和物理任务进行两个幅度比较。在模拟 440 米海水深度的自毁试验中，分别在 1 和 45 ATAs 时对两项数字 Stroop 任务进行了两次测试。参与者为 18 名男性日本海上自卫队 SD 潜水员专家（年龄为 36.58 ± 4.89 岁）：在数字任务中，与不一致条件下的 1 ATA 相比，45 ATA 时的反应时间（RT）明显延迟。在物理任务中，在所有条件下（一致、不一致和中性），45 ATA 时的反应时间都明显延迟。在数字 Stroop 任务中，与不一致条件下的 1 ATA 相比，45 ATA 时的正确率（CR）明显下降：我们的研究结果表明，潜水员的认知能力在 45 ATA 深度自毁期间受到了损害。这些结果强调了在深海自毁中监测认知的重要性，并突出了对自毁进行教育和培训的必要性。预计将结合 Stroop 任务和其他分析（如事件相关电位（ERP））进行进一步研究。

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来源期刊

Journal of Physiological Anthropology PHYSIOLOGY-

自引率

6.50%

发文量

期刊介绍： Journal of Physiological Anthropology (JPA) is an open access, peer-reviewed journal that publishes research on the physiological functions of modern mankind, with an emphasis on the physical and bio-cultural effects on human adaptability to the current environment. The objective of JPA is to evaluate physiological adaptations to modern living environments, and to publish research from different scientific fields concerned with environmental impact on human life. Topic areas include, but are not limited to: environmental physiology bio-cultural environment living environment epigenetic adaptation development and growth age and sex differences nutrition and morphology physical fitness and health Journal of Physiological Anthropology is the official journal of the Japan Society of Physiological Anthropology.