Basal ganglia
<p>Sep 01, 2012 07:12 PM
 
 
Scholarpedia article:  curated by Peter Redgrave  from Sheffield.
this is far more definitive than the wiki article... which is cursory and inaccurate.
 
Components:
INPUTS into  Striatum = caudate + putamen  and  STN = subthalamic nuceus.
 
OUTPUTS  SNr = subst nigra pars reticulata and the GPi = globus pallidus interna.
 
GPe = globus pallidus externa is maily an intrinsic structure (efferents and afferents only to
other basal ganglia nuclei.
 
DOPAMINERGIC INPUTS to the Striatum from
1)  SNc = subst. nigra pars compacta to dorsal striatum (goes bad in Parkinsons)
2) VTA = ventral tegmental area to NAC = nucl accumbens = ventral striatum
(involved in reward learning and addiction)
 
both provide key modulatory signals for each.
 
STRIATUM:</p>