Nov 20, 2017




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Nov 29, 2017


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  • Scientists are now finding that light acts on individuals through multiple pathways, most notably the optic nerve that links to the brain's visual cortex, providing a pathway for the visual effects of light. The optic nerve also links to the more recently discovered retinohypothalamic tract, providing a pathway for the nonvisual effects of light. However, specific effects have not yet been widely evaluated clinically, especially in relationship to chromotherapy (ie, therapy based on colored light). Question: Do you think that color can affect your nervous system ? If Yes, give us on comment your favorite color and your emotional type when you see the color. Different emotional types ( Robert Plutchik's theory ) : Fear → feeling of being afraid, frightened, scared. Anger → feeling angry. A stronger word for anger is rage Sadness → feeling sad. Other words are sorrow, grief (a stronger feeling, for example when someone has died) Joy → feeling happy. Other words are happiness, gladness Disgust → feeling something is wrong or nasty. Strong disapproval. Surprise → being unprepared for something. Trust → a positive emotion; admiration is stronger; acceptance is weaker. Anticipation → in the sense of looking forward positively to something which is going to happen. Expectation is more neutral Share if you found interesting.
  • Select the one best response. A 30 year old male complains of unilateral headaches with rhinorrhea and tearing of the eye on the side of the headache. Episodes are precipitated by alcohol. Headaches may become a problem for weeks to months, after which a headache-free period occurs. The most likely diagnosis is: a. Migraine b. Cluster headache c. Sinusitis d. Tension headache
  • Heading comprises two distinct hereditary disorders, formerly labeled peripheral and central neurofibromatosis, but now entitled neurofibromatosis type I and type II. Type I (peripheral) neurofibromatosis, by far the more common of the two types, is characterized clinically by the combination of patches of hyperpigmentation and cutaneous and subcutaneous tumors. The hyperpigmented skin areas, present from birth and found anywhere on the body surface, can vary markedly in size and color: those that are dark brown are called café-au-lait spots. The multiple cutaneous and subcutaneous tumors, called neurofibromas, can develop anywhere along the peripheral nerve fibers, from the roots distally. Neurofibromas can become large, causing major disfigurement, eroding bone, and compressing various peripheral nerve structures; a small hamartoma (Lisch nodule) can be found in the iris of almost all patients. Type I neurofibromatosis, also called von Recklinghausen disease, has autosomal dominant inheritance, with the gene locus on chromosome 17q11, and is caused by mutation in the NF1 gene that encodes neurofibromin. Type II (central) neurofibromatosis has few cutaneous manifestations, and consists primarily of bilateral (less often, unilateral) acoustic neuromas, causing deafness, often accompanied by other intracranial and paraspinal neoplasms, such as meningiomas and gliomas. Type II neurofibromatosis also has autosomal dominant inheritance, but the gene locus is on 22q11, caused by mutation in the NF2 gene encoding the product merlin. Sources: - Stedman's Medical Dictionary. - Photo: Copyright © M&G Medical Forum , neurofibromatosis type I.

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