Physics of Neurons Essay - 1401 Words

The human nervous system is divided into two parts, the central nervous system and the peripheral nervous system. The central nervous system, CNS, is just the brain and spinal cord. The peripheral nervous system, PNS, includes the nerves and neurons that extend outwards from CNS, to transmit information to your limbs and organs for example. Communication between your cells is extremely important, neurons are the messengers that relay information to and from your brain. Nerve cells generate electrical signals to transmit information. Neurons are not necessarily intrinsically great electrical conductors, however, they have evolved specialized mechanisms for propagating signals based on the flow of ions across their membranes. In their†¦show more content†¦Dendrites are the primary target for synaptic input from other neurons and compose the extensive branching. The complexity of the dentritic branching is directly related to the number of inputs a neuron can recieve. So neurons with lots of dendrites are able to process information at a greater rate than neurons with fewer dendrites. Most neurons do not make direct connections with surrounding neurons, signals (molecules) must make the transition from the presynaptic (upstream) neuron to the postsynaptic (downstream) neuron. This transition space is called the synaptic cleft. The exchange of information from the pre- to postsynaptic neuron is called a synapse. Information conveyed by the synapses on the dendrites is processed and projected from the axon. The axon is extraordinary, it is specialized for signal conduction to the next neuron. Axons vary in length, the ones in your brain are relatively short in comparison to the axons that run from your spinal cord down to your foot (about a meter long). The electrical event that projects the signal along these distances is known as an action potential. The action potential runs from the axon hillock to the end of the axon where more synaptic contacts are made. Target cells of neurons include nerve cells in your brain, spinal cord, cells of your muscles and various glands. Axons are like wires inShow MoreRelatedQuantum Neural Network Essay1014 Words   |  5 Pagesinterconnected nodes called neurons.Each edge of the graph has a weight associated with it to model the synaptic eciency. The training process involves updating the weights of the network in such a way that the network learns to solve the problem. The neurons in the network work together to solve specic problems. The network can be trained to do various tasks like pattern recognition, data classication,function approximation etc. ANNs are widely used in the elds of computer vision and speech recognitionRead MoreA Statistical Physics Model ( Or Soal )1473 Words   |  6 Pages A Statistical Physics Model ( or SOAL Stochastically Oriented Asymmetric Localization) for Axon Outgrowth Patterning Normally, at the leading edge, the molecular mechanism produces axon outgrowth activity and moves plasma membrane extension of HSN cell body in the ventral direction (Adler et al., 2006). However, in mutants, the different directions of axon outgrowth from the HSN cell body scored to create a probability distribution for axon outgrowth activity directions, diffusion andRead MoreConsciousness Is Not An Illusion1631 Words   |  7 Pagespermanent in the cerebrum. 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