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  2. Nystagmus - Wikipedia

    en.wikipedia.org/wiki/Nystagmus

    Nystagmus. Nystagmus is a condition of involuntary (or voluntary, in some cases) [1] eye movement. [2] People can be born with it but more commonly acquire it in infancy or later in life. In many cases it may result in reduced or limited vision. [3] In normal eyesight, while the head rotates about an axis, distant visual images are sustained by ...

  3. Optokinetic response - Wikipedia

    en.wikipedia.org/wiki/Optokinetic_response

    Horizontal optokinetic nystagmus. The optokinetic reflex ( OKR ), also referred to as the optokinetic response, or optokinetic nystagmus (OKN), is a compensatory reflex that supports visual image stabilization. [ 1] The purpose of OKR is to prevent image blur on the retina that would otherwise occur when an animal moves its head or navigates ...

  4. Presbycusis - Wikipedia

    en.wikipedia.org/wiki/Presbycusis

    Presbycusis. Presbycusis (also spelled presbyacusis, from Greek πρέσβυς presbys "old" + ἄκουσις akousis "hearing" [ 1] ), or age-related hearing loss, is the cumulative effect of aging on hearing. It is a progressive and irreversible bilateral symmetrical age-related sensorineural hearing loss resulting from degeneration of the ...

  5. What older adults need to know about concussions

    www.aol.com/older-adults-know-concussions...

    A concussion is a mild form of traumatic brain injury, or TBI. It occurs when the skull and brain are rapidly jolted back and forth. This is usually the result of a bump, bang, or blow to the head ...

  6. Signs and symptoms of multiple sclerosis - Wikipedia

    en.wikipedia.org/wiki/Signs_and_symptoms_of...

    The signs and symptoms of multiple sclerosis (MS) encompass a wide range of neurological and physical manifestations, including vision problems, muscle weakness, coordination difficulties, and cognitive impairment, varying significantly in severity and progression among individuals. Multiple sclerosis can cause a variety of symptoms: changes in ...

  7. About 4% of US adults age 65 and older have a dementia ...

    www.aol.com/news/4-us-adults-age-65-040225251.html

    The CDC said 1.7% of adults ages 65 to 74 reported a dementia diagnosis, a rate that increased with age. For those ages 75 to 84, the reported dementia rate was 5.7%

  8. Cerebellar degeneration - Wikipedia

    en.wikipedia.org/wiki/Cerebellar_degeneration

    It is located above the brain stem, posterior to the brain. Cerebellar degeneration is a condition in which cerebellar cells, otherwise known as neurons, become damaged and progressively weaken in the cerebellum. [1] There are two types of cerebellar degeneration; paraneoplastic cerebellar degeneration, and alcoholic or nutritional cerebellar ...

  9. Leading a healthier lifestyle can help offset genetic heart ...

    www.aol.com/leading-healthier-lifestyle-help...

    The research specifically focused on Chinese adults and utilized data from the China Kadoorie Biobank. ... which was in men age 55 or older or in women age 65 or older.