Acute Psychophysiological Responses To Laboratory-Induced Stress In Different Groups: An Exploratory Study
Table 2:
| Domain | Measure | Description | Features trend under stress |
| Time-domain | AVNN | Average of NN intervals (ms) | ↓ |
| RMSSD | Root mean square of differences of successive NN intervals (ms) | ↓ | |
| pNN50 | NN variations above 50 ms (%) | ↓ | |
| Frequency-domain | LF/HF | Ratio of Low Frequency and High Frequency power band | ↑ |