to investigate the mechanism of analgesia noted with electrical stimulation of the thalamic sensory relay nucleus and medial thalamus , modulations of neuronal activities in the periaqueductal gray matter ( pag ) were studied in response to electrical stimulations of the ventroposterolateral nucleus ( vpl ) and parafascicular nucleus ( pf ) and to peripheral noxious stimulations in rats .
C0039729
thalamus
C0228352
parafascicular nucleus