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Purpose <p>This study aims to study and analyze EEG alpha power, beta power and alpha/beta ratio variations in response to an attention-seeking cognitive task among healthy young adults with normal and impaired sleep and their possible correlation with sleep quality (PSQI score), cognitive performance (reaction time and accuracy) and psychological parameters (GAD-7 scores &amp; PSS scores).</p> Methodology <p>Fifty young adults (mean age = 20.5 <i>±</i> 2.50) participated in the study. According to PSQI scores, they were divided into normal sleepers (<i>n</i> = 25) and impaired sleepers (<i>n</i> = 25). EEG was measured in the resting, and during Go/No-Go task. Higher alpha power (<i>p</i> = 0.047) was evidenced in normal sleepers in the resting state.</p> Results <p>During the task, a decreased alpha/beta ratio (<i>p</i> = 0.034) was highlighted in normal sleepers. Upon correlational study, alpha power at rest was positively correlated (<i>p</i> = 0.013) with the cognitive task accuracy and negatively correlated with PSQI scores (<i>p</i> = 0.020) &amp; GAD- 7 scores (<i>p</i> = 0.010).</p> Conclusion <p>In conclusion, alpha power at rest emerges as a potential neurophysiological marker associated with attentional accuracy in young adults. Findings highlight the need for sleep-focused interventions (relaxation techniques, mindfulness practice, music therapy, light therapy) to attenuate stress &amp; anxiety and to enhance cognitive performance in young adults.</p>

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An observational study to analyze changes in EEG alpha wave and alpha/beta ratio neurodynamics during an attention seeking cognitive task among young healthy adults with normal sleep and impaired sleep

  • 期刊论文

  • 发表日期：

    2026年2月28日

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  • Divya Bharathi V,
  • Sushma S,
  • Vivekhan Raja,
  • Pavan Kumara Kasam Shiva,
  • Reetham B

摘要

Purpose

This study aims to study and analyze EEG alpha power, beta power and alpha/beta ratio variations in response to an attention-seeking cognitive task among healthy young adults with normal and impaired sleep and their possible correlation with sleep quality (PSQI score), cognitive performance (reaction time and accuracy) and psychological parameters (GAD-7 scores & PSS scores).

Methodology

Fifty young adults (mean age = 20.5 ± 2.50) participated in the study. According to PSQI scores, they were divided into normal sleepers (n = 25) and impaired sleepers (n = 25). EEG was measured in the resting, and during Go/No-Go task. Higher alpha power (p = 0.047) was evidenced in normal sleepers in the resting state.

Results

During the task, a decreased alpha/beta ratio (p = 0.034) was highlighted in normal sleepers. Upon correlational study, alpha power at rest was positively correlated (p = 0.013) with the cognitive task accuracy and negatively correlated with PSQI scores (p = 0.020) & GAD- 7 scores (p = 0.010).

Conclusion

In conclusion, alpha power at rest emerges as a potential neurophysiological marker associated with attentional accuracy in young adults. Findings highlight the need for sleep-focused interventions (relaxation techniques, mindfulness practice, music therapy, light therapy) to attenuate stress & anxiety and to enhance cognitive performance in young adults.