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Neural Correlate
The neural correlates of consciousness (NCC) are the minimal set of neuronal events and mechanisms sufficient for the occurrence of the mental states to which they are related. Neuroscientists use empirical approaches to discover neural correlates of subjective phenomena; that is, neural changes which necessarily and regularly correlate with a specific experience. Neurobiological approach to consciousness A science of consciousness must explain the exact relationship between subjective mental states and brain states, the nature of the relationship between the conscious mind and the electrochemical interactions in the body (mind–body problem). Progress in neuropsychology and neurophilosophy has come from focusing on the body rather than the mind. In this context the neuronal correlates of consciousness may be viewed as its causes, and consciousness may be thought of as a state-dependent property of an undefined complex, adaptive, and highly interconnected biological system. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kandel2007
Kandel () is a town in the Germersheim district of Rhineland-Palatinate, Germany, near the border with France and approximately 18 km north-west of Karlsruhe, and 15 km south-east of Landau. Kandel is twinned with the small Lancashire town of Whitworth. Kandel is the seat of the ''Verbandsgemeinde'' ("collective municipality") Kandel. Coat of arms meaning Star: Celestial goodness, noble person, leadership, excellence. Sword: Justice and military honour. Sky-Blue (Azure): Truth and loyalty. Notable inhabitants The following overview contains notable people associated with Kandel. The list does not claim to be complete. Honorary citizens * 1980: Maria Wiesheu (Sister Himeria), a member of the Order of the Sisters of the Divine Redeemer, a province of Palatinate, Esthal, a long time active as a nurse in Kandel * 1991: Oskar Böhm († 2001), 1955-1989 Mayor of the city of Kandel, 1972-1981 Mayor of the Association of Kandel Sons and daughters of the city * Fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minimally Conscious State
A minimally conscious state (MCS) is a disorder of consciousness distinct from persistent vegetative state (PVS) and locked-in syndrome. Unlike PVS, patients with MCS have partial preservation of conscious awareness. MCS is a relatively new category of disorders of consciousness. The natural history and longer term outcome of MCS have not yet been thoroughly studied. The prevalence of MCS was estimated to be nine times of PVS cases (adult and pediatric), or between 112,000 and 280,000 in the US by year 2000. Pathophysiology Neuroimaging Because minimally conscious state is a relatively new criterion for diagnosis, there are very few functional imaging studies of patients with this condition. Preliminary data has shown that overall cerebral metabolism is less than in those with conscious awareness (20–40% of normal) and is slightly higher but comparable to those in vegetative states. Activation in the medial parietal cortex and adjacent posterior cingulate cortex are brain r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Persistent Vegetative State
A vegetative state (VS) or post-coma unresponsiveness (PCU) is a disorder of consciousness in which patients with severe brain damage are in a state of partial arousal rather than true awareness. After four weeks in a vegetative state, the patient is classified as being in a persistent vegetative state (PVS). This diagnosis is classified as a permanent vegetative state some months (three in the US and six in the UK) after a non-traumatic brain injury or one year after a traumatic injury. The term unresponsive wakefulness syndrome may be used alternatively, as "vegetative state" has some negative connotations among the public. It is occasionally also called Apallic syndrome or Apallisches syndrome, Loanword, borrowings from German, primarily in European or older sources. Definition There are several definitions that vary by technical versus layman's usage. There are different legal implications in different countries. Medical definition Per the definition of the British Royal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coma
A coma is a deep state of prolonged unconsciousness in which a person cannot be awakened, fails to Nociception, respond normally to Pain, painful stimuli, light, or sound, lacks a normal Circadian rhythm, sleep-wake cycle and does not initiate voluntary actions. The person may experience respiratory and circulatory problems due to the body's inability to maintain normal bodily functions. People in a coma often require extensive medical care to maintain their health and prevent complications such as pneumonia or blood clots. Coma patients exhibit a complete absence of wakefulness and are unable to consciously feel, speak or move. Comas can be the result of natural causes, or can be Induced coma, medically induced, for example, during General anaesthesia, general anesthesia. Clinically, a coma can be defined as the consistent inability to follow a one-step command. For a patient to maintain consciousness, the components of ''wakefulness'' and ''awareness'' must be maintained. Wak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glasgow Coma Scale
The Glasgow Coma Scale (GCS) is a clinical scale used to reliably measure a person's level of consciousness after a brain injury. The GCS assesses a person based on their ability to perform eye movements, speak, and move their body. These three behaviours make up the three elements of the scale: eye, verbal, and motor. A person's GCS score can range from 3 (completely unresponsive) to 15 (responsive). This score is used to guide immediate medical care after a brain injury (such as a car accident) and also to monitor hospitalised patients and track their level of consciousness. Lower GCS scores are correlated with higher risk of death. However, the GCS score alone should not be used on its own to predict the outcome for an individual person with brain injury. Scoring The Glasgow Coma Scale is used for people above the age of two and is composed of three tests: eye, verbal, and motor responses. The scores for each of these tests are indicated in the table below. The Glas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circadian
A circadian rhythm (), or circadian cycle, is a natural oscillation that repeats roughly every 24 hours. Circadian rhythms can refer to any process that originates within an organism (i.e., endogenous) and responds to the environment (is entrained by the environment). Circadian rhythms are regulated by a circadian clock whose primary function is to rhythmically co-ordinate biological processes so they occur at the correct time to maximize the fitness of an individual. Circadian rhythms have been widely observed in animals, plants, fungi and cyanobacteria and there is evidence that they evolved independently in each of these kingdoms of life. The term ''circadian'' comes from the Latin ', meaning "around", and ', meaning "day". Processes with 24-hour cycles are more generally called diurnal rhythms; diurnal rhythms should not be called circadian rhythms unless they can be confirmed as endogenous, and not environmental. Although circadian rhythms are endogenous, they are adjuste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
REM Sleep
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 temperature decreases to lowest values. The REM phase is also known as paradoxical sleep (PS) and sometimes desynchronized sleep or dreamy sleep, because of physiological similarities to waking states including rapid, low-voltage desynchronized brain waves. Electrical and chemical activity regulating this phase seem to originate in the brain stem, and is characterized most notably by an abundance of the neurotransmitter acetylcholine, combined with a nearly complete absence of monoamine neurotransmitters histamine, serotonin and norepinephrine. Experiences of REM sleep are not transferred to permanent memory due to absence of norepinephrine. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zeman2001
Zeman (feminine Zemanová) is a Czech and Slovak surname. The word originally denoted a member of low nobility. Notable people with the surname include: Culture and science * Adam Zeman (neurologist) (born 1957), British neurologist * Brock Zeman (born 1981), Canadian singer-songwriter * Jacklyn Zeman (1953–2023), American actress * Karel Zeman (1910–1989), Czech filmmaker * Ludmila Zeman (born 1947), Czech-Canadian artist, animator, and creator of children's book * Ned Zeman (born 1966), writer and screenwriter * Zbyněk Zeman (1928–2011), Czech historian Politics and business * Allan Zeman (born 1949), Hong Kong businessman * Edward J. Zeman (1905-1966), American politician * Ivana Zemanová (born 1965), wife of Miloš Zeman * Miloš Zeman Miloš Zeman (; born 28 September 1944) is a Czech politician who served as the third president of the Czech Republic from 2013 to 2023. He also previously served as the prime minister of the Czech Republic from 1998 to 2002. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neural Oscillations
Neural oscillations, or brainwaves, are rhythmic or repetitive patterns of neural activity in the central nervous system. Neural tissue can generate oscillatory activity in many ways, driven either by mechanisms within individual neurons or by interactions between neurons. In individual neurons, oscillations can appear either as oscillations in membrane potential or as rhythmic patterns of action potentials, which then produce oscillatory activation of post-synaptic neurons. At the level of neural ensembles, synchronized activity of large numbers of neurons can give rise to macroscopic oscillations, which can be observed in an electroencephalogram. Oscillatory activity in groups of neurons generally arises from feedback connections between the neurons that result in the synchronization of their firing patterns. The interaction between neurons can give rise to oscillations at a different frequency than the firing frequency of individual neurons. A well-known example of macros ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
