Physiology 3120 Lecture 2: Physiology 3120 – Exam 2 study notes
23 Dec 2016
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Lecture 14 consciousness, evoked potentials, eeg, sleep (november 10th, 2014) Today we are talking about several different things that are vaguely related, consciousness, evoked potentials, eeg, and sleep. Another important fact if you made a lesion through this area (brain stem) you would have an unconscious animal. There is also a descending component that produces postsynaptic inhibition, ex. When you are in rem sleep you have inhibition of proximal postural muscles, this is mediated by this descending inhibition (talk about later) As well as these pathways there are also motor pathways from the motor cortex, then comes down as well, and go through the spinal cord, This arousal system is made up of a number of different nuclei and different groups of neurons in the brain stem, the first one is the noradrenergic system, coming from a structure called the locus ceruleus, As well as these neurons, there are a whole other set of neurons with different transmitters.
