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Non-arteritic anterior ischemic optic neuropathy (NAION) is a medical condition characterized by loss of vision caused by damage to the optic nerve as a result of ischemia, or insufficient blood supply. The key symptom of NAION is optic disc swelling, which typically resolves within 2 months, but often leads to optic atrophy. The likelihood of ...
NAION is the most common cause of sudden optic nerve-related vision loss, affecting more than 10,000 Americans every year, often bilaterally. No clinically effective treatments exist, largely because little is known about its pathophysiology, and there are few histopathological studies of the acute condition.
This is particularly apparent in the right hemisphere. In non-sleep-deprived people involved in verbal learning and arithmetic tasks, the anterior cingulate cortex and the right prefrontal cortex are active. Following sleep deprivation, there is increased activation of the left inferior frontal gyrus and the bilateral parietal lobes. This ...
Sleep tracker apps or other devices could help improve sleep efficiency by providing information and insights into your sleep habits, which you can use to make improvements, Dr. Chitkara says.
Sleep timing is controlled by the circadian clock, and in humans, to some extent by willed behavior. The term circadian comes from the Latin circa, meaning "around" (or "approximately"), and diem or dies, meaning "day". The circadian clock refers to a biological mechanism that governs multiple biological processes causing them to display an ...
After identifying the possible underlying causes and the factors contributing to insomnia, the person can begin taking steps towards getting better sleep. In CBT-I these steps include stimulus control, sleep hygiene, sleep restriction, relaxation training, and cognitive therapy. Some sleep specialists recommend biofeedback as well. [2]
The REM Sleep Behavior Disorder Screening Questionnaire (RBDSQ) is a specific questionnaire for rapid eye movement behavior disorder (RBD) developed by Stiasny-Kolster and team, [1] to assess the most prominent clinical features of RBD. [2] It is a 10-item, patient self-rating instrument with short questions to be answered by either 'yes' or ...
Rapid eye movement sleep (REM sleep or REMS) is a unique phase of sleep in mammals (including humans) and birds, characterized by random rapid movement of the eyes, accompanied by low muscle tone throughout the body, and the propensity of the sleeper to dream vividly. The core body and brain temperatures increase during REM sleep and skin ...