Summary The Thalamus: The Brain’s Grand Central Station

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TOPIC
NEURO 4



THALAMUS

THALAMUS ANATOMY
Located in the DIENCEPHALON MADE UP OF (EPITHALAMUS, HYPOTHALAMUS AND THALAMUS)
• Target for ALL SENSORY INFORMATION EXCEPT OLFACTION that goes to the cortex and subcortical
structures

• Fxn: RELAY INFORMATION, integrate, modulated and gating the flow of information from one part of
cortex to another
• Location:
§ There are 2 thalami, connected by the interthalamic adhesion
§ Located inferior to lateral ventricle and in between third ventricle

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THALAMIC CONTAIN NUCLEI GROUPED IN 3 GROUPS
“CONSIDERED RELAY NUCLEI (CAN BE SENSORY, MOTOR OR LIMBIC)

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1. MEDIAL GROUP
§ DORSAMEDIAL
2. LATERAL GROUP
§ VENTRAL TIER
o VENTRAL ANTERIOR
o VENTRAL LATERAL
o VENTRAL POSTERIOR ( ventral
posteromedial and ventroposterolateral)
o MEDIAL GENICULATE BODY
o LATERAL GENICULATE BODY
§ DORSAL TIER
o DORSAL LATERAL
o LATERAL POSTERIOR
o PULVINAR
3. ANTERIOR GROUP
§ ANTERIOR
NUCLEI
GROUPS ARE
CREATED BY THE
INTERNAL
MEDULLARY
LAMINAE