Overview of Brain - Psychology Notes

What is the adept ? Vast collection of inter relateed cells called neurons. 1012 neurons with 1015 synapses (connections) cortical neurons connect to roughly 3% of surrounding neurons cortical neuron whitethorn receive connections from up to myriad other neurons Supported by an even greater twist of cells called glia ( non nerve cells!) galore(postnominal) different types of neurons in terms of size, plaster cast and molecular properties (12 general types in the neocortex). Each neuron has collar clean-cut parts: cell body (soma) - can be the fleck of input, mainly inhibitory dendrites - input zone axon - take pathway Neurons atomic number 18 connected together in event ways to form functional circuits, oftentimes like transistors, resistors and capacitors are connected to form electronic circuits. Neurons kick the bucket via galvanizing impulses called exercise potentials there are other forms of communication as well e.g. gap junctions Effect (via an action potent ial) of one neuron on another can be excitatory - encouraging the receiving neuron to emit an action potential inhibitory - reject the receiving neuron from emitting an action potential.

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

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