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Most people in the world depend on the sun to get vitamin D, [31] and elderly populations in low UVB countries experience higher rates of cancer. [32] There are not many foods that naturally have vitamin D. [33] Examples are cod liver oil and oily fish. If people cannot get sunlight, then they will need 1,000 IU of vitamin D per day to stay ...
Foreign accent syndrome is a rare medical condition in which patients develop speech patterns that are perceived as a foreign accent [1] that is different from their native accent, without having acquired it in the perceived accent's place of origin. Foreign accent syndrome usually results from a stroke, [1] but can also develop from head ...
An auditory hallucination, or paracusia, [ 1 ] is a form of hallucination that involves perceiving sounds without auditory stimulus. While experiencing an auditory hallucination, the affected person hears a sound or sounds that did not come from the natural environment. A common form of auditory hallucination involves hearing one or more voices ...
Although tied more closely to France than to Spain or Portugal, the etiquette regarding Haiti is similar to other Latin American countries. [8]Haitians take proper behavior seriously and this includes good manners, clean appearances at all times, a moderate tone in one's speech, and avoidance of any profanity or public "scenes", as these are all important indicators of one's social class.
Cosmic ray visual phenomena. Cosmic ray visual phenomena, or light flashes (LF), also known as Astronaut's Eye, are spontaneous flashes of light visually perceived by some astronauts outside the magnetosphere of the Earth, such as during the Apollo program. While LF may be the result of actual photons of visible light being sensed by the retina ...
Closed-eye hallucination. Closed-eye hallucinations and closed-eye visualizations (CEV) are hallucinations that occur when one's eyes are closed or when one is in a darkened room. They should not be confused with phosphenes, perceived light and shapes when pressure is applied to the eye's retina, or some other non-visual external cause ...
Eye contact occurs when two people or animals look at each other's eyes at the same time. [ 1 ] In people, eye contact is a form of nonverbal communication and can have a large influence on social behavior. Coined in the early to mid-1960s, the term came from the West to often define the act as a meaningful and important sign of confidence and ...
Visual or vision impairment (VI or VIP) is the partial or total inability of visual perception. In the absence of treatment such as corrective eyewear, assistive devices, and medical treatment, visual impairment may cause the individual difficulties with normal daily tasks, including reading and walking. [6] The terms low vision and blindness ...