Brain perfusion SPECT is a non-invasive nuclear medicine imaging technique that allows regional CBF evaluation. The technique includes four main components: the CBF radiotracers (radiopharmaceuticals)‚ instrumentation‚ image reconstruction‚ and CBF quantification. 1.1.1 CBF radiotracers The inert gas xenon 133 is one of the most important and classical radiotracers for CBF measurement in absolute units using SPECT []. Nevertheless‚ the poor spatial resolution and the requirement for dedicated instrumentation
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Effects of Bacterial Meningitis on the Brain Abstract Meningitis is an infection of the subarachnoid space (located between the middle arachnid matter and the inner pia mater) of the meninges‚ which is the thin layer of tissues that line the brain and the spinal cord. Cerebrospinal fluid flows through the subarachnoid space and the meninges‚ providing cushion for the brain and the spinal cord‚ and filling the internal spaces within the brain. There are 2 main types of meningitis
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Schizophrenia is a complex brain disorder. Like many other illnesses‚ schizophrenia is believed to result from a combination of environmental and genetic factors. All the tools of modern science are being used to search for the causes of this disorder. The term schizophrenia is Greek in origin‚ and in the Greek meant "split mind." This is not an accurate medical term. In Western culture‚ some people have come to believe that schizophrenia refers to a split-personality disorder. These are two very
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Measuring Brain Activity Most of the noninvasive imaging methods estimate brain activity by changes in blood flow‚ oxygen consumption‚ glucose utilization‚ etc. Discuss the potential problems with using this type of indirect measure. The brain is the control center of the human body. It sends and receives millions of signals every second‚ day and night‚ in the form of hormones‚ nerve impulses‚ and chemical messengers. This exchange of information makes us move‚ eat‚ sleep‚ and think.
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the years scientists have discovered that there is more to the brain than previously thought. They have learned that inside the brain there is a synapse or an area that is open between the axon of a nerve and the dendrite of another nerve. The synapse entails the neurotransmitters‚ mitochondria‚ postsynaptic ending that has receptors sites for the neurotransmitters‚ and a synaptic cleft. When alcohol is consumed and reaches the brain‚ it can alter neuron membranes‚ ion channels‚ enzymes‚ and receptors
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Doctor- “A brain-eating amoeba” is just as horrific as it sounds‚ is a parasite that can enter the brain and lead to deadly inflammation of the brain. Naegleria fowleri makes its way into our body by entering the brain through the nose typically when someone goes underwater. It infects the brain‚ leading to meningitis‚ which eventually causes death. The infected person normally dies within a period of 2 weeks.“Naegleria Fowleri” is the genus and species name of the amoeboflagellate. This amoeba causes
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In the Coping Brain‚ there are three parts‚ the thinking section‚ the emotional area‚ and the survival thoughts. All three work together in order to cope with new challenges and worries. The thinking part of the brain allows us to see and contemplate more clearly during this times of duress. The emotional section helps us to keep our feelings in check while we deal with the disturbing exterior stimulus. The survival part of our brains is what kicks in to gear our desire to maintain our well-being
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Science‚ Goldacre argues about brain gym that children don’t need Brain Gym to spot nonsense. He concentrates on criticizing an educational program that‚ however‚ initially delivered in the United States‚ is presently ejecting in hundreds (if not thousands) of schools the whole way across the U.K. Brain Gym‚ has been depicted as a "string of complicated and exclusive activities for children that upgrades the experience of whole brain learning” (Goldacre‚ 2011‚ p.16). The brain gym is a series of progression
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1. Language ( what is language ) http://en.wikipedia.org/wiki/Language Linguistic : http://www.cs.indiana.edu/classes/c661/ling_k.html Knowledge of sound system (phonetic & pholology) ….....................word ( semantics and syntacitc) http://en.wikipedia.org/wiki/Linguistics (explaination of linguistic) http://www.speech-therapy-information-and-resources.com/linguistic-knowledge-bases.html ( linguistic based on what? Semantic-syntactic/ phonology/ phonetics ) 2. Brain
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Biological level of analysis – serotonin Serotonin is a neurotransmitter which plays different roles in our brain‚ and can have effects such as sleep‚ arousal levels and emotion. The study was conducted by two researchers‚ Kasamatsu and Hirai‚ at Tokyo’s University in 1999. The aim of the study was to find out how the sensory deprivation affects the brain and later on‚ the human behavior. In order to achieve their aim‚ the researchers examined a group of Buddhist monks who went to a religious
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