Table 2.

Time, Number and Amplitude of Eye Movements, and Amount α and β Frequency EEG Activity 1 min Before Awakening in Different Conditions

Average	Auditory Stimulation	No Auditory Stimulation	t-test, P-value
Time of night	05:27 (1.14 h)	04:59 (1.15 h)	t12 = 1.08, P = 0.30
Number of EMs ( > 50 µV)	3.4 (1.66)	17.6 (5.87)	t12 = 10.40, P < 0.001
Amplitude of EMs ( > 50 µV)	100.6 µV (21.93 µV)	122.7 µV (12.41 µV)	t12 = 4.94, P < 0.001
α and β frequency EEG (sec)	13.8 sec (9.71 sec)	4.9 sec (3.07 sec)	t12 = 4.07, P = 0.002

Results of repeated measures t-tests comparing the 2 conditions on each measure are shown in the final column. Results shown as mean (SD). N = 13.