Fig. 3.

The HV condition affected the brain networks of the patients within the delta and theta bands. (a) In the patient group, the HV condition significantly impaired the small-worldness index of the brain network relative to the resting state within the delta band as K was 0.05. The HV condition did not affect the brain networks of the controls. (b) As K was 0.50, the HV condition impaired the small-worldness index of the brain networks in the patient group relative to the resting state at trend level. No influence was found for the controls. (c) and (d) In the theta band, the HV condition also impaired the small-worldness index of the brain networks of the patients relative to the resting state as K was 0.05 and 0.15, respectively. * denotes P < 0.05. # denotes P < 0.10. HV, hyperventilation.