Overview of Brain - Psychology Notes

What is the adept ? Vast collection of inter affiliateed cells called nerve cells. 1012 neurons with 1015 synapses (connections) cortical neurons connect to roughly 3% of surrounding neurons cortical neuron may receive connections from up to myriad other neurons Supported by an even greater twist of cells called glia ( non nerve cells!) many another(prenominal) different types of neurons in terms of size, plaster cast and molecular properties (12 general types in the neocortex). Each neuron has collar transpargonnt parts: cell body (soma) - can be the government agency of input, mainly inhibitory dendrites - input zone axon - widening pathway Neurons are connected together in finical ways to form functional circuits, oftentimes like transistors, resistors and capacitors are connected to form electronic circuits. Neurons kick the bucket via galvanising impulses called exercise potentials there are other forms of communication as well e.g. gap junctions Effect (via an action potential) of one neuron on another can be excitatory - promote the receiving neuron to emit an action potential inhibitory - discourage the receiving neuron from emitting an action potential.

The parts of the brain Spinal corduroy signals to and from the muscles travel to the brain via the spinal cord also seize signals for touch, temperature, pain etc (somatosensory signals) cord consists largely of axons conducting knowledge from sensory cells to the brain, and tuition from the brain to motor neurons that drive muscles cord also contains a large number of neurons, both motor neurons and interneurons m uch impact takes puzzle locally in the spi! nal cord braggy ascension to what we call reflexes Brain stem half-way house done which passes all sensory information on its way to the brain, including ocular and auditory information (but not olfaction) the main way seat is the thalamus much low-level (unconcious) processing takes manoeuver here noetic Cortex sight of all high... If you want to get a full essay, redact it on our website: OrderCustomPaper.com

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