Research of the Regulation effect of Cooling Stimulation on vigilance

Vigilance plays an important role in daily life and many specific businesses like driving. Decrement of vigilance could result in serious accidents. Therefore, quick identification and effective prevention of the decrement of vigilance become important and necessary. Here, we developed a revised version of the psychomotor vigilance test (PVT) to identify vigilance decrement and a forehead-cooling stimulation to improve vigilance. Before and during stimulation, the participant's behavior and electroencephalography (EEG) variation were analyzed and compared. Results showed that there was a significant difference concerning behavior and EEG power (the relative power RP_β, the power ratios P_α/β and P_(θ+α)/β), but not for Lempel-Ziv Complexity (LZC). Our results suggest that forehead-cooling stimulation may be an effective method to increase vigilance.