Table 1

Descriptive statistics. Latency and amplitude of SEPs parameters in controls and in the various patients groups

controls
N = 10
 Demented
N = 14
 mild dementia
N = 4
 severe dementia
N = 10
 Subcortical
N = 3
 Cortical
N = 3
 both cortical and subcortical
N = 8

Mean
 SD
 Mean
 SD
 Mean
 SD
 Mean
 SD
 Mean
 SD
 Mean
 SD
 Mean
 SD
N13 Latency
 12.96
 0.27
 13.87
 1.25
 13.08
 0.73
 14.19
 1.30
 13.47
 0.59
 13.17
 0.86
 14.29
 1.45
N13 Amplitude
 2.56
 0.32
 2.09
 0.91
 2.75
 0.44
 1.83
 0.92
 2.68
 0.57
 2.50
 0.46
 1.72
 0.99
N19 Latency
 18.19
 0.48
 20.19
 1.91
 18.33
 0.61
 20.94
 1.72
 19.93
 1.50
 18.40
 0.72
 20.96
 1.97
N19 Amplitude
 2.27
 0.22
 1.16
 0.97
 1.86
 0.98
 0.88
 0.86
 1.73
 1.32
 0.95
 1.01
 1.03
 0.88
N13-19 Latency
 5.23
 0.36
 6.29
 0.93
 5.25
 0.17
 6.70
 0.75
 6.47
 0.92
 5.23
 0.15
 6.61
 0.86
P27 Latency
 27.28
 0.29
 30.59
 2.64
 28.40
 1.91
 31.46
 2.43
 31.47
 3.65
 27.43
 0.49
 31.44
 1.91
P27 Amplitude
 1.78
 0.14
 0.96
 0.77
 1.02
 0.91
 0.94
 0.77
 1.30
 0.87
 1.33
 0.98
 0.70
 0.66
N11-P27 Latency
 16.66
 0.45
 19.91
 2.74
 17.88
 1.97
 20.73
 2.64
 20.73
 4.05
 17.10
 0.46
 20.66
 2.21

Tsiptsios et al. Annals of General Hospital Psychiatry 2003 2:8   doi:10.1186/1475-2832-2-8