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During gaze shifts, for example when an object appears in the periphery, humans usually move both their eyes and head to capture the object of interest. In experiments, in which participants needed to shift their gaze to detect a visual target, people with schizophrenia exhibit abnormal eye-head coordination, and no modulation of saccadic ...
The stare-in-the-crowd effect is the notion that an eyes-forward, direct gaze is more easily detected than an averted gaze. First discovered by psychologist and neurophysiologist Michael von Grünau and his psychology student Christina Marie Anston using human subjects in 1995, [1] the processing advantage associated with this effect is thought to derive from the importance of eye contact as a ...
Esotropia (from Greek eso 'inward' and trope 'a turning' [1]) is a form of strabismus in which one or both eyes turn inward. The condition can be constantly present, or occur intermittently, and can give the affected individual a "cross-eyed" appearance. [2] It is the opposite of exotropia and usually involves more severe axis deviation than ...
In most cases, the gaze palsy can simply be seen by inability to move both eyes in one direction. However, sometimes a patient exhibits an abduction nystagmus in both eyes, indicating evidence of a conjugate gaze palsy. [12] A nystagmus is a back and forth "jerk" of the eye when attempting to hold a gaze in one direction. [13]
Individuals locate objects with their eyes, move towards the object, and then use hands to make contact with and manipulate the object. [17] Change in gaze direction is one of several behavioral cues that individuals use in combination with changes in facial and vocal displays and body posture to mark the intention to act on an object. [17]
People also may not remember where their home is or the loved ones who take care of them, Dr. Kobylarz says. “You can see [the person with dementia] change at a certain time of the day and ...
One study reported 85% of adults with strabismus "reported that they had problems with work, school, and sports because of their strabismus." The same study also reported 70% said strabismus "had a negative effect on their self-image." [59] [unreliable medical source] A second operation is sometimes required to straighten the eyes. [27] [page ...
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