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Table 2 Visual evoked potential measurements for the three participant groups. Mean peak latencies (ms) and amplitudes (μV) are shown for the early P1-N1-P2 waveform components; standard deviations are in parentheses

From: Measuring visual electrophysiological responses in individuals with low-functioning autism: a feasibility and pilot study

Group P1 N1 P2
Latency Amplitude Latency Amplitude Latency Amplitude
LFA 94.7
(±25.8)
3.34
(±1.79)
141.3
(±26.5)
-1.27
(±3.12)
221.3
(±28.0)
3.43
(±2.32)
HFA 82.0
(±22.4)
2.98
(±1.42)
116.8
(±30.2)
-2.44
(±2.66)
208.7
(±27.7)
5.02
(±2.59)
TD 78.7
(±8.2)
1.94
(±1.92)
115.3
(±16.1)
-1.95
(±3.46)
192.0
(±26.4)
5.23
(±2.19)
  1. LFA: Low-Functioning Autism. HFA: High-Functioning Autism. TD: Typical Development