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This research examines if ear thermography can effectively monitor sympathetic and parasympathetic nervous system activity.

June 18, 2026SensorsOpen Access

Ear Thermography as a Candidate Dynamic Index of Sympathetic and Parasympathetic Activity

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Randomized trial evaluates ear thermography's effectiveness in monitoring autonomic nervous system activity, suggesting novel applications.

This research examines if ear thermography can effectively monitor sympathetic and parasympathetic nervous system activity.
Propose a testable hypothesis on ear thermography as a dynamic index.
Investigate the relationship between ear regions and autonomic influence through thermography during emotional stimuli.
Posterior ear regions showed a negative relationship between temperature and emotional arousal, indicating sympathetic influence.
Anterior ear regions displayed a non-linear response, resembling the characteristics of parasympathetic activity.

Sato et al. (2026) studied this question.

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Randomized trial evaluates ear thermography's effectiveness in monitoring autonomic nervous system activity, suggesting novel applications.