Table 5.
Correlations between Rhythm Amplitude and Cognitive Measures
| Variable | Amplitude | |
|---|---|---|
| r | 95% CI | |
| Neuropsychological assessments | ||
| California Verbal Learning Test+ | −0.16 | [−0.4, 0.11] |
| Controlled Oral Word Association Test+ | −0.15 | [−0.45, 0.19] |
| Trails Making Test A | −0.02 | [−0.18, 0.13] |
| Trails Making Test B | 0.29 | [0.04, 0.47] |
| WAIS-IV Vocabulary | 0.13 | [−0.04, 0.29] |
| WAIS-IV Digit Span | −0.01 | [−0.19, 0.16] |
| Psychomotor vigilance task | ||
| Mean response time | 0.08 | [−0.05, 0.30] |
| False starts | −0.04 | [−0.19, 0.23] |
Correlations were performed using bootstrapped confidence intervals with jackknife adjustment. All neuropsychological measures were reported as standardized z-scores. + indicates results from the older adult group only.