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Light from a single point of a distant object and light from a single point of a near object being brought to a focus. The accommodation reflex (or accommodation-convergence reflex) is a reflex action of the eye, in response to focusing on a near object, then looking at a distant object (and vice versa), comprising coordinated changes in vergence, lens shape (accommodation) and pupil size.
Purkinje cells of the cerebellar cortex tonically inhibit deep nuclear cells. Therefore, an LTD-mediated decrease in PC activity at the appropriate time during a CS-US interval could release the INP from tonic inhibition and allow for execution of a CR. An increase in PC activity could have the opposite effect, prohibiting or limiting CR execution.
Because the methods of vestibular rehabilitation therapy differ for different disorders, the form of vestibular dysfunction, ability level, and history of symptoms, each patient must be carefully assessed in order to diagnose vestibular dysfunction and to choose the correct exercises for treatment.Vestibular physiotherapy entails precise maneuvers and sports designed to deal with inner ear ...
The trochlear solely innervates the superior oblique muscle of the eye. Together, trochlear and abducens contract and relax to simultaneously direct the pupil towards an angle and depress the globe on the opposite side of the eye (e.g. looking down directs the pupil down and depresses (towards the brain) the top of the globe).
The symptoms of vestibulocerebellar syndrome vary among patients but are typically a unique combination of ocular abnormalities including nystagmus, poor or absent smooth pursuit (ability of the eyes to follow a moving object), strabismus (misalignment of the eyes), diplopia (double vision), oscillopsia (the sensation that stationary objects in the visual field are oscillating) and abnormal ...
A shift in the visual field affects an individual's spatial recognition. The leading research would suggest that the flocculus aids in the synchronization of eye and motor functions after a visual shift occurs in order for the visual field and the motor skills to function together.
The cerebrum is a major part of the brain, controlling emotions, hearing, vision, personality and much more. It controls all precision of voluntary actions, and it functions as the center of sensory perception, memory, thoughts and judgement; the cerebrum also functions as the center of voluntary motor activities.
When directed on the cerebellum, tDCs can increase or suppress the excitability of neurons. [20] This is the dependent on the current; an anode is placed on the target region and a cathode on the reference region, I.e. excitability of neurons is enhanced in the target region and alternatively suppressed in the reference region. [21]