Subsequent tests revealed that gaze perception in the chimpanzee was controlled by the contrast between iris and sclera, as in humans, but that the chimpanzee attended only to the position of the iris in the eye, irrespective of head direction.
Further analyses revealed similar gaze effects in left anterior STS and precuneus.
Extending the analyses beyond V1 and V2, at the group level, revealed significant gaze × polar angle interactions in all early visual areas, particularly between 5° and 10° of eccentricity along the vertical meridian (Fig. 6).
A quantitative evaluation of neural modulations (two-way anova, P < 0.05; see Materials and methods) revealed that gaze direction significantly influenced neural activity in the large majority of the neurons studied (84%, 73/87).
Despite its fixed pupil size, the systematic measurements of the artificial eye model revealed substantial gaze-position-dependent changes in the measured pupil size.
Systems analysis reveals that gaze stabilization often involves several sensory modalities, including vision itself, and makes use of feedback as well as feedforward signals.
Then, features extracted from the EOG traces are used as inputs to a pair of minimum distance classifiers whose outputs reveal the gaze shift performed by the eyes.
And yet no sun can melt Blago's coif, which, despite his many troubles, descends like a silken espresso curtain and then swerves suddenly to the side, revealing a gaze most innocent.
And for a moment, his softened voice and far-off gaze, revealed a glimpse of the frightened boy who believed no one ever would be.
Our pilot data further revealed that the gaze direction cue facilitated the motion cue (or the other way around) to have an effect, i.e. both social cues are required to get a stronger visual illusion.
The neurological examination revealed supranuclear vertical gaze palsy, poor face miming, and a mild balance deficit.
