Thalamus Flashcards
Thalamic Nuclei
Body Sensation
Relay to Somatosensory cortex
VPL
Ventroposterior Lateral
Thalamic Nuclei
Face Sensation
Relay to Somatosensory cortex
VPM
Ventroposterior Medial
Thalamic Nuclei
Thalamic Relay for:
Limbic System
Papez circuit
Anterior group
Thalamic Nuclei
Motor Loops
Thalamic Blood Supply
Primary Major Artery?
Distal vessels?
PCA:
Thalamic perforators
Thalamogeniculate
post choroidal
Thalamic Nuclei
Relay to Somatosensory cortex
VPL
Ventroposterior Lateral
Thalamic Nuclei
Mnemonics for:
VPM
VPL
LGN
MHN
1- Ventral Postero-Lateral nuclues (VPL) => Very Painful Leg
This nucleus has input (pain, temperature, pressure, touch, vibration and proprioception) from Spinothalamic and dorsal columns/medial lemniscus ( Lower Limbs and Upper Limbs).
2- Ventral Postero-Medial nucleus (VPM) => Very Painful Mouth
This nucleus has input (face sensastion and taste) from trigeminal and gustatory pathway).
3- Lateral Geniculate Nucleus (LGN) => Looking Good Naked :O
This nucleus has input (part of the visual pathway) from the optic nerve.
4- Medial Geniculate Nucleus (MGN) => Making Good Noise
This nucleus has input (part of the hearing pathway) from superior olive and inferior colliculus of tectum.
Dejerine–Roussy syndrome
Thalamic pain syndrome: initial sxs of numbers. Weeks to months later numbness may evolve into pain in the same distribution
BG Blood supply
Caudate
Putamen
GP
Thalamus
Caudate: MCA > Lenticulate striate
Putamen: ACA > Perforating br / recurrent aa of Heubner
GP: Anterior choroidal (from ICA near MCA)
Thalamus: PCA
(Thalamoperforators, Thalamogeniculate, post choroidal)