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Table 1 Effects of zaleplon at two doses on sleep process and sleep structure (\( \overline{x}\pm s \), n = 8)

From: Investigation of the usefulness of zaleplon at two doses to induce afternoon-sleep under noise interference and its effects on psychomotor performance and vestibular function

Index Placebo group Zaleplon 10 mg group Zaleplon 15 mg group
Sleep process    
 Sleep latency (min) 27.50 ± 10.92 11.19 ± 2.05* 5.75 ± 2.12**
 Sleep efficiency (%) 68.71 ± 6.04 69.63 ± 3.69 87.40 ± 6.22**∆∆
Sleep structure    
 N1 (%) 32.58 ± 5.68 29.52 ± 3.77 31.58 ± 5.26
 N1 (%) 45.86 ± 8.98 42.37 ± 6.68 37.95 ± 10.16
 N3 (%) 15.21 ± 7.01 20.96 ± 7.87 12.71 ± 3.97
 REM (%) 6.35 ± 3.44 7.16 ± 2.76 17.76 ± 4.87**∆∆
  1. Maximum time in bed was 270 min. * P < 0.05, ** P < 0.01 compared with placebo group; P < 0.05, ∆∆ P < 0.01 compared with zaleplon 10 mg group