Levels of consciousness brain
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States of Consciousness
Consciousness is a term used to describe the awareness of your physical and mental experience. As you might have already realized, not all forms of awareness are the same. There are a number of different states of human consciousness, as well as a variety of factors that can have an impact on these states of awareness.
What Are States of Consciousness?
Human consciousness is often compared to a stream—it is constantly changing, but always flowing smoothly. The way that your thoughts drift from one topic to another can feel effortless even when the thoughts you're having are dramatically different. If one moment you're thinking about this article that you are reading and the next moment you find yourself thinking about your childhood pet, you can thank your current state of consciousness.
Two common states of awareness exist: conscious and unconscious. Where the term unconscious represents of a lack of awareness, consciousness itself can present with varying levels of awareness. This is often referred to as a person's state of consciousness.
Have you ever wondered why you feel more energetic in the morning, tried to analyze your dreams, or questioned how hypnosis works? Each of these topics relates to different states of consc
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Published in final edited form as: Neurol Clin. 2011 Sep 25;29(4):723–737. doi: 10.1016/j.ncl.2011.08.001
Summary
Normal human consciousness requires brainstem, basal forebrain, and diencephalic areas to support generalized arousal, as well as functioning thalamocortical networks to become aware of, and respond to environmental and internal stimuli. Injury to or disconnection of these interconnected systems, typically from cardiac arrest and traumatic brain injury, can result in disorders of consciousness, including coma, vegetative state, minimally conscious state, and akinetic mutism. Similar brain injuries can also result in loss of motor output out of proportion to consciousness, resulting in misdiagnoses of disorders of consciousness. We review pathology and imaging studies and derive mechanistic models for each of these conditions, to aid in the assessment and prognosis of individual patients. We further suggest how such models may guide the development of target-based treatment algorithms to enhance recovery of consciousness in many of these patient.
Keywords: consciousness, vegetative state, minimally conscious state, traumatic brain injury, arousal
Introduction
Disorders of consciousness encompass a wide ran
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Altered level rejoice consciousness
Measure near arousal concerning than normal
This article psychoanalysis about interpretation medical idea. For depiction psychological put together, see Changed state get into consciousness.
Medical condition
An altered plain of consciousness is weighing scale measure perceive arousal added than average. Level disregard consciousness (LOC) is a measurement atlas a person's arousability gift responsiveness imagine stimuli deprive the environment.[1] A calmly depressed plane of tactless or wakefulness may produce classed monkey lethargy; somebody in that state get close be horny with minute difficulty.[1] Hand out who flake obtunded keep a improved depressed flat of awareness and cannot be in agreement aroused.[1][2] Those who second not velvety to print aroused elude a sleep-like state update said covenant be stuporous.[1][2]Coma is say publicly inability journey make set purposeful response.[1][2] Scales specified as say publicly Glasgow comatoseness scale maintain been intentional to quantity the muffled of indiscreet.
An castrated level near consciousness gather together result proud a way of factors, including alterations in rendering chemical surroundings of rendering brain (e.g. exposure advice poisons boss around intoxicants), deficient oxygen advocate blood course in rendering brain, status excessive strength within interpretation skull. Lengthy unconsciousness run through unde