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perceived by the eyes synchronizes both of these glands. The Pineal organ, considered the ‘regulator of regulators’, also utilizes light information, sent by way of the eyes to orchestrate and synchronize the bodies internal functions with the subtle changes in the outside world (e.g. day and night rhythms, the seasons of the year, earth’s electromagnetic field, etc). According to Dr. Joubert, studies performed on completely blind people (eyes have been enucleated/removed) as compared to sighted or blind (can still perceive light and/or the eyes have not been enucleated/removed) subjects show that the former had lower levels of ACTH (Adrenocorticotropic Hormone), cortisol, testosterone, TSH (Thyroid-Stimulating Hormone) and growth hormone. Further studies on pre- versus post-cataract patients indicated that deficiencies in the endocrine and metabolic systems were completely restored after surgical intervention. This indicates that even if a person is clinically blind, if an eye is present to receive light stimulation the metabolic systems are kept in balance. The nervous system also responds differently to different frequencies of light. The Parasympathetic System shows an increased sensitivity to the blue part of the spectrum. When stimulated with a blue colour it leads to decreased anxiety and hostility resulting in relaxation. The Sympathetic System however is sensitive to the frequency of red. This results in excitement and increased tension. Blind subjects, who still have intact optic pathways, respond in the same way as sighted subjects when exposed to these frequencies of light (Joubert, 2004). Cool white florescent lighting, so often used in places of business and school rooms, are deficient in the red and blue (also indigo and violet) spectral ranges. People exposed to this from of light for only two weeks show increases in ACTH and cortisol (the stress hormone). ACTH and cortisol are related to the body’s response to stress and weaken the immune system. They also act as growth inhibitors. Symptoms of fatigue, agitation and decreased mental abilities are also experienced in these conditions. These levels return to normal after two weeks of exposure to full spectrum artificial lighting or sunlight. When full spectrum lighting is used within school classrooms there is a marked improvement in behaviour, performance, academic achievement with reduced hyperactivity (Rourke, 1985). 68PDF Image | THE USE OF LIGHT AND COLOUR AS A HEALING MODALITY
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