Figure 1.
Simplified representation of face space, e.g., [42].
The average or norm face lies at the centre, and more distinctive faces lie towards the perimeter. Two example identity trajectories are shown, each extending from the original face (Dan or Jim, 90% identity strength), to the average face or norm (0% identity strength) through to the antiface which has complementary characteristics to the original face and negative identity strength values (e.g., -80%). In the face identity aftereffect, exposure to a face (e.g., Anti-Dan) shifts the average (norm) towards that face, making the opposite face (e.g., Dan) now appear further from the norm. This shift makes the original face (e.g., Dan) now appear more distinctive and easier to recognize at weaker identity strengths [5].
Figure 2.
Sample test and adapting stimuli used in the Standard and Attention-control attention condition of the adaptation task (exemplars from the Dan and Jim identity pair are shown here).
The “Lip change” and “Eye change” versions of the anti-face were used in the change detection task in the Control attention condition.
Figure 3.
Cumulative Gaussians fitted to group data for in the Standard (left) and Attention-control condition (right) for typical children and children with autism.
SE bars are shown. All aftereffects used in analysis were calculated from curves fitted to individual data.
Figure 4.
Aftereffects for participants in each group for the two attention conditions.
The bold horizontal bars reflect the mean and standard error bars are shown.