PSYC 1013 Lecture Notes - Lecture 4: Reticular Formation, Facial Expression, Pattern Recognition
4 Mar 2018
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Document Summary
Moderates the signal from neuron to neuron. Action potential there should be enough charge for it to fire an action potential. Has been evolving for perhaps 500 million years. Frontal area, skull + brain getting larger. Hindbrain: where the spinal cord enters the brain it enlarges to form the stalk-like structures of the brainstem: brainstem (medulla, pons) Medulla: respiration & heart rate, nerve relay between the brain and spinal cord, contralateral control, construction of medulla will result in death or life support. Midbrain: reticular activating system, awareness of incoming stimuli, state of wakefulness (alertness) or sleep for sustained periods of time, alarming going off in the morning makes it activate, facial expression, sexual excitement. Initiating voluntary movement: parkinson"s disease, affects bg circuits, tremor, rigidity, problems initiating movements, limbic system, coordinates behaviors needed to satisfy urges and motivational and emotional urges arising in the hypothalamus.
