Physiology IV: Somatosensory System 2 - Primary Sensory Neurons and their Modalities

Third order neurons of the sensory pathways tend to originate in the Thalamus Hypothalamus Putamen Caudate Nucleus( Thalamus, Hypothalamus, Putamen, Caudate Nucleus ) and project to the Primary Somatosensory Cortex Primary Motor Cortex( Primary Somatosensory Cortex, Primary Motor Cortex ) (AKA the Postcentral Precentral( Postcentral, Precentral ) Gyrus)

In terms of the dorsal column medial lemniscus pathway, 2nd 1st 3rd( 2nd, 1st, 3rd ) order neurons cross collectively at the great sensory decussation and ascend in the medial lemniscus lateral lemniscus inferior colliculus( medial lemniscus, lateral lemniscus, inferior colliculus ) to the Ventral Posterior Lateral (VPL) Ventral Superior Medial (VSM) Geniculate( Ventral Posterior Lateral (VPL), Ventral Superior Medial (VSM), Geniculate ) nucleus of the thalamus

Lateral Inhibition Adjacent Inhibition Lateral Depression Adjacent Depression( Lateral Inhibition, Adjacent Inhibition, Lateral Depression, Adjacent Depression ) is the way in which an active neuron inhibits the activity of its neighbours via inhibitory interneurons