Table 2. Descriptive statistics of trial numbers and amplitude of the SPN for typically developing (TD) individuals and those with autism spectrum disorder (ASD).
Group | Familiar Faces | Unfamiliar Faces | Familiar Arrows | Unfamiliar Arrows | ||||
Trials | Amplitude | Trials | Amplitude | Trials | Amplitude | Trials | Amplitude | |
TD | 30.15 (2.67) | −6.58 (2.97) | 30.21 (2.72) | −3.91 (2.89) | 29.92 (3.01) | −.28 (2.97) | 30.14 (2.31) | −.12 (2.89) |
ASD | 25.07 (2.57) | −3.65 (2.89) | 30.28 (2.72) | −3.74 (2.89) | 28.14 (2.90) | −2.21 (2.89) | 25.21 (2.31) | −5.73(2.89) |
Means are displayed, followed by standard error in parentheses (SE). Amplitude is the average magnitude of the SPN over the last 200 ms before reward stimulus onset (measured in microvolts).