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2.16.12 Neurons - Mirror Neurons VS Ramachandran on TED >...

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Mirror Neurons VS Ramachandran on TED http://www.ted.com/talks/vs_ramachandran_the_neur
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Synaptic Communication by  Neurons
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Some terms……. presynaptic ending   synapse or synaptic cleft   postsynaptic membrane   pre and postsynaptic receptors
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Synaptic Communication Once the action potential reaches the end of  the axon, or the terminal bouton, a number  of voltage activated channels on the  presynaptic membrane (terminal bouton)  open and calcium (CA++) rushes into the  cell. This results in  neurotransmitter  release into  the synapse.
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Synaptic Communication The NT fills the synapse and the NT binds  the  receptors  that are imbedded in the  postsynaptic membrane.   Receptors : protein molecules that change  shape (are activated) by neurotransmitter  molecules with a particular shape.
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Postsynaptic Receptors The postsynaptic membrane (dendrite or cell  body) contains: 1. Ion channels 2. Receptors 2 types: 1. Ionotropic  receptors
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Ion Channels Ion channels are embedded in the cell’s  membrane.  Most abundant on dendrites  and the cell body. Ion channels allow ions (Na+, K+) to move in  and out of the cell … and it is this movement  that alters the  membrane potential .
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Neuron is the information  processing unit of the brain.
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Ion channels allow ions to move in  and out of the cell  Resting Potential
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