Figure 5
From: Autonomic versus perceptual accounts for tactile hypersensitivity in autism spectrum disorder

An example of the psychometric function of an ASD participant in the touch comparison task. “o”s show the fractions of the participant’s strong response as a function of the forces of the comparison stimuli when compared with the standard stimulus (1.4 g). “▴” shows the point on the curve at which the percentage of strong response was 50%. The slope (derivative) of the curve was used as the dependent variable.