Behavioral Neuroscience, lecture on Afferent Path and SCN
USD Department of Biology
Behavioral Neuroscience
Summers
Rhythmicity & Behavior
Sensory input for Rhythmicity
Afferent path to the SCN
Figures of Rhythmicity
Retina-RGC-SCN
Yawning Circadian Rhythms
Efferent SCN output
Integration of Rhythms into Behavior
Molecular SCN
end  Acronyms/Abbreviations   Syllabus
Glu
VIP
AVP
GABA
5-HT
Sensory Input:
(1) Retina




retinal ganglion cell in green














Afferents to SCN
1) RGC to SCN


Biological Clock: Suprachiasmatic nucleus
1) SCN location
SCN found at the anterior border of the hypothalamus
2)coronal section of SCN
Nissl stained
Suprachiasmatic cells stained with Nissl


3) SCN core and shell: peptides
shell and core have different neuromodulators

Efferents from the SCN
1) to the Hypothalamus
SCN output to PVN and DMN
2) Paths to the Pineal (hormone feedback)
SCN-PVN-SC-SCG-NE-B2-cAMP