Pathways

Question 1

Gustatory Pathway for taste

Answer 1

transmitted ipsilaterally

Question 2

Olfactory Pathway for smell

Answer 2

ONLY sensory system that has NO obligatory synaptic relay in thalamus à directly innervates basal forebrain

Question 3

Auditory Pathway for sound

Answer 3

ipsi/contralaterally to medial superior olivary nucleus

Question 4

Visual Pathways for sight

Answer 4

Optic tracts travel ipsilaterally to lateral geniculate nuclei in the thalamus

nasal fibers decussate
tempora fibers do not

Geniculostriate pathway relays in the lateral geniculate nucleus and continues to the primary visual
cortex
o At the LGN there are two layers of cells
§ Magnocellular layer: receives input from the ganglion M cells
§ Parvocellular layer: receives input from the ganglion P cells

Extrageniculate pathways bypass the LGN and go to the superior colliculus