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Fig. 3 | Military Medical Research

Fig. 3

From: Successful use of closed-loop allostatic neurotechnology for post-traumatic stress symptoms in military personnel: self-reported and autonomic improvements

Fig. 3

Spectral power values for heart rate variability before and after intervention. Error bars are standard error of the mean (SEM). *, P < 0.05; **, P < 0.01 vs V1; RRI, R to R interval; V1, Visit 1; V2, Visit 2; HF, High frequency; LF, Low Frequency. V1. baseline study visit; V2. immediately after intervention completion

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