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Neurotransmitter Flashcards
Neurotransmitter Flashcards

... 134. What group of medicines are used when a person has too much glutamate released (such as after a stroke)? 135. Antagonists to which neurotransmitter helps stop neuronal death after a stroke? 136. Why are strokes or trauma to the brain so dangerous in relation to neurotransmitters? 137. What effe ...
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... Involved in sleep-wake regulation, by increasing wakefulness and prevent sleep; also protects against the susceptibility to convulsion, drug sensitisation, denervation super-sensitivity, ischemic lesions and stress; may controls the mechanisms by which memories and learning are forgotten; may be inv ...
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Axia College Material Appendix C Brain Response of Behavior Part I

... Neurons are the microscopic nerve cells of the brain which play a critical role in human behavior and thought processes (Morris & Maisto, 2005). The communication process of neurons begins with the dendrite, short fibers branching from the outer cell body. These dendrites transmit messages to neighb ...
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learning objectives chapter 2

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Poster

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מצגת של PowerPoint
מצגת של PowerPoint

... - The proportion of monocular, deprived-eye neurons, in deprived animals was no different to the proportion of these neurons in controls (supporting prediction ‘a’). - The entire deprived-eye response range of neurons responding predominantly or exclusively to the deprived eye (OD score 0–0.25) was ...
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NERVOUS SYSTEM1.ppt [Recovered]

Inquiry into Life, Eleventh Edition
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... Diseases that affect the function of signal transmission can have serious consequences. Parkinson's disease has a deficiency of the neurotransmitter dopamine. Progressive death of brain cells increases this deficit, causing tremors, rigidity and unstable posture. L-dopa is a chemical related to dopa ...
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... 3. axon – A threadlike extension of a neuron that carries nerve impulses away from the cell body. 4. nerve impulse – A message carried by a neuron. 5. sensory neuron – A neuron that picks up stimuli from the internal or external environment and converts each stimulus into a nerve impulse. 6. interne ...
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Reinforcement learning in populations of spiking neurons
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... mechanism for achieving reliable behavioral responses despite neuronal variability. However, standard reinforcement learning slows down with increasing population size, as the global reward signal becomes less and less related to the performance of any single neuron. We found that learning speeds up ...
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neurotransmitters 101

... The brain’s 100 billion neurons connect the various organs and brain regions into a complex network of circuits that control specific functions within the body. Simply speaking, these circuits serve as on/off switches for the millions of messages and processes carried out on a daily basis. For examp ...
Auto-structure of presynaptic activity defines postsynaptic firing
Auto-structure of presynaptic activity defines postsynaptic firing

... the high variance case where F FC is large, and coincidences are more clustered than in case of Poissonian firing. This case occurs for very regular and bursty auto-structures (see Fig. 3A), and only in the case that the rates of the all spikes trains are identical or have a n:m relationship. In the ...
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1. A unicellular protest may use a contractile vacuole to expel

... b. Schwann cells – create myelin sheath around axon in CNS. c. Synapse – space between presynaptic and postsynaptic cells into which neurotransmitter is released. d. Dendrite – receives signals from other neurons. e. All of the above are correctly paired with their functions. 31. Why is signal trans ...
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Chemical synapse



Chemical synapses are specialized junctions through which neurons signal to each other and to non-neuronal cells such as those in muscles or glands. Chemical synapses allow neurons to form circuits within the central nervous system. They are crucial to the biological computations that underlie perception and thought. They allow the nervous system to connect to and control other systems of the body.At a chemical synapse, one neuron releases neurotransmitter molecules into a small space (the synaptic cleft) that is adjacent to another neuron. The neurotransmitters are kept within small sacs called vesicles, and are released into the synaptic cleft by exocytosis. These molecules then bind to receptors on the postsynaptic cell's side of the synaptic cleft. Finally, the neurotransmitters must be cleared from the synapse through one of several potential mechanisms including enzymatic degradation or re-uptake by specific transporters either on the presynaptic cell or possibly by neuroglia to terminate the action of the transmitter.The adult human brain is estimated to contain from 1014 to 5 × 1014 (100–500 trillion) synapses. Every cubic millimeter of cerebral cortex contains roughly a billion (short scale, i.e. 109) of them.The word ""synapse"" comes from ""synaptein"", which Sir Charles Scott Sherrington and colleagues coined from the Greek ""syn-"" (""together"") and ""haptein"" (""to clasp""). Chemical synapses are not the only type of biological synapse: electrical and immunological synapses also exist. Without a qualifier, however, ""synapse"" commonly means chemical synapse.
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