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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 ...
In children, the most common cause is a stroke of the ventral pons. [9]Unlike persistent vegetative state, in which the upper portions of the brain are damaged and the lower portions are spared, locked-in syndrome is essentially the opposite, caused by damage to specific portions of the lower brain and brainstem, with no damage to the upper brain.
The thousand-yard stare (also referred to as two-thousand-yard stare) is the blank, unfocused gaze of people experiencing dissociation due to acute stress or traumatic events. It was originally used about war combatants and the post-traumatic stress they exhibited but is now also used to refer to an unfocused gaze observed in people under a ...
Signs of a person with a gaze palsy may be frequent movement of the head instead of the eyes. [2] For example, a person with a horizontal saccadic palsy may jerk their head around while watching a movie or high action event instead of keeping their head steady and moving their eyes, which usually goes unnoticed. Someone with a nonselective ...
A 1913 study by John E. Coover asked ten subjects to state whether or not they could sense an experimenter looking at them, over a period of 100 possible staring periods. . The subjects' answers were correct 50.2% of the time, a result that Coover called an "astonishing approximation" of pure chance.
After the BBC's earlier reporting, many people got in touch to share their own lived experiences, including one woman who said she had "suffered in silence" since childhood.
Types of incomitant strabismus include: Duane syndrome, horizontal gaze palsy, and congenital fibrosis of the extraocular muscles. [46] When the misalignment of the eyes is large and obvious, the strabismus is called large-angle, referring to the angle of deviation between the lines of sight of the eyes.
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 ...