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<p>This study examined whether electrodermal activity (EDA) during cognitive processing varies as a function of task demands, Internet addiction severity, and gender. Forty-five university students completed three experimental tasks with increasing cognitive demands (passive viewing, introspection, and analytical reasoning), while tonic (EDL) and phasic (EDR) components of EDA were recorded. Linear mixed-effects models revealed no significant main effects of Internet addiction or Gender × Addiction interactions on either tonic or phasic activity. In contrast, task-related differences emerged as the primary source of variation in electrodermal responses. Phasic activity increased during the analytical task compared to passive viewing, indicating higher autonomic reactivity in this condition. Although descriptive variations in tonic and phasic activity between gender groups were observed in the introspective condition, these were not supported by inferential analyses. Overall, findings suggest that electrodermal activity is primarily modulated by task characteristics rather than Internet addiction severity or gender. These results highlight the importance of task design in psychophysiological research and suggest that phasic EDA may be particularly sensitive to task-related variation in controlled experimental contexts.</p>

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Detecting Psychophysiological Patterns Requires Cognitive Demand: Task-Dependent Electrodermal Responses and the Limited Role of Internet Addiction

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月23日

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  • Vicente Villalba-Palacín,
  • Lydia Sánchez,
  • Caterina Calderón

摘要

This study examined whether electrodermal activity (EDA) during cognitive processing varies as a function of task demands, Internet addiction severity, and gender. Forty-five university students completed three experimental tasks with increasing cognitive demands (passive viewing, introspection, and analytical reasoning), while tonic (EDL) and phasic (EDR) components of EDA were recorded. Linear mixed-effects models revealed no significant main effects of Internet addiction or Gender × Addiction interactions on either tonic or phasic activity. In contrast, task-related differences emerged as the primary source of variation in electrodermal responses. Phasic activity increased during the analytical task compared to passive viewing, indicating higher autonomic reactivity in this condition. Although descriptive variations in tonic and phasic activity between gender groups were observed in the introspective condition, these were not supported by inferential analyses. Overall, findings suggest that electrodermal activity is primarily modulated by task characteristics rather than Internet addiction severity or gender. These results highlight the importance of task design in psychophysiological research and suggest that phasic EDA may be particularly sensitive to task-related variation in controlled experimental contexts.