Figure 3.

Box plots of HRJSD indices differentiating healthy control subjects (CON), patients with schizophrenia (SZO) and healthy first-degree relatives (REL). (a) CRC pattern RESP-E1/BBI-E1 indicating reduced HRV in combination with reduced respiratory variability; (b) CRC pattern RESP-LD1/BBI-E1 indicating no variability of HR in combination with weak decreasing respiratory frequency; (c) respiratory pattern family RESP-E2 reflecting strong increasing respiratory frequency; (d) HR pattern family BBI-E1 reflecting no variability of HR. Significant discriminating indices are indicated as follows: *p<0.01 and ^**p<0.00061. (BBI, beat-to-beat intervals; RESP, respiratory frequency.)