ANAT2010 Lecture Notes - Lecture 9: Motor Neuron, Motor System, Neuroanatomy
Document Summary
Concept #1 there is an emotional motor system" that interacts with somatic motor system. Voluntary motor system: medial sub-system, tectospinal pathways, vestibulospinal pathways, reticulospinal pathways (pontine & medullary) Concept #2 to define neuroanatomy of emotional motor system we have to have a definition of emotion. Emotion" following cognitive appraisal (e. g. we cry, & evaluate & label experience sadness") Concept #3 initial descriptions of neuroanatomy of emotional motor system relied on natures accidents". Concept #4 specific emotional behaviours may be represented in specific neuroanatomical pathways. Basic emotions : sadness, fear, surprise, anger, disgust, happiness. Integrative center for emotions, emotional behaviour & motivation: subdivided into subregions: (i) corticomedial nuclei (ii) basolateral nuclei (iii) central nucleus. The limbic system" (or paleomammalian cortex: set of brain structures located on both sides of thalamus, immediately beneath cerebrum, not a separate system but a collection of structures from telencephalon, diencephalon & mesencephalon. Medial geniculate nucleus (mgn) basolateral nucleus (acetyl choline)
