Fig. 5
From: Digit-tracking as a new tactile interface for visual perception analysis
Detection of abnormal visual explorations in autistic spectrum disorders (ASD). a Typical exploration behaviors observed in four subjects (two ASD and two control subjects), recorded with either eye-tracking or digit-tracking. High-functioning autistic patients (ASD) tend to adopt an atypical face exploration strategy that avoids the eye area. Note similarities in the explorations, even if they are recorded with different methods on different subjects. b Results of the group analyses: For each subject, a single score was calculated to quantify the neurotypicity of attention maps obtained in patients (N = 22) and control subjects (N = 22). Both methods (Eye-tracking and digit-tracking) detect anomalies in the attention maps of the ASD population (respectively peye < 0.0001 and pdigit < 0.00001–Wilcoxon rank-sum test) and are correlated (Spearman rho = 0.56 p < 0.0002). c Receiver Operating Characteristic (ROC) curves for ASD/CTRL classifications with the ‘exploration-neurotypicality score’. Please note that original faces have been modified to hide individuals’ identity.
