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[1] [2] Differential diagnosis of these disorders is an active area of biomedical research. [3] [4] [5] Finally, brain death results in an irreversible disruption of consciousness. [1] While other conditions may cause a moderate deterioration (e.g., dementia and delirium) or transient interruption (e.g., grand mal and petit mal seizures) of ...
Another thorough account of the spiritual approach is Ken Wilber's 1977 book The Spectrum of Consciousness, a comparison of western and eastern ways of thinking about the mind. Wilber described consciousness as a spectrum with ordinary awareness at one end, and more profound types of awareness at higher levels. [219] [independent source needed]
A spectrum disorder is a disorder that includes a range of linked conditions, sometimes also extending to include singular symptoms and traits.The different elements of a spectrum either have a similar appearance or are thought to be caused by the same underlying mechanism.
While some other theories assert that consciousness emerges as the complexity of the computations performed by cerebral neurons increases, [4] [5] Orch OR posits that consciousness is based on non-computable quantum processing performed by qubits formed collectively on cellular microtubules, a process significantly amplified in the neurons.
A lowered level of consciousness indicate a deficit in brain function. [4] Level of consciousness can be lowered when the brain receives insufficient oxygen (as occurs in hypoxia); insufficient blood (as occurs in shock, in children for example due to intussusception); or has an alteration in the brain's chemistry. [3]
A minimally conscious state or MCS is a disorder of consciousness distinct from persistent vegetative state and locked-in syndrome. Unlike persistent vegetative state, patients with MCS have partial preservation of conscious awareness. [1] MCS is a relatively new category of disorders of consciousness.
Electromagnetic field theories (or "EM field theories") of consciousness propose that consciousness results when a brain produces an electromagnetic field with specific characteristics. Susan Pockett [ 1 ] [ 2 ] and Johnjoe McFadden [ 3 ] have proposed EM field theories; William Uttal [ 4 ] has criticized McFadden's and other field theories.
Clouding of consciousness, also called brain fog or mental fog, [1] [2] occurs when a person is slightly less wakeful or aware than normal. [3] They are less aware of time and their surroundings, and find it difficult to pay attention. [ 3 ]