Sensory Flashcards
Relay station for pain, nucleus concerned with it
Thalamus;
VPL (ventroposteriolateral) nucleus (for general senses only)
Visceral organ representation in PENFIELD Homonculus
No representation for visceral organs, the pain associated with it are referral pains.
Sensory pathways
- Dorsal (posterior) column
2. Spinothalamic (anterolateral) tract
Relay station for vision, nucleus concerned
Thalamus; LGB (lateral geniculate bodies)
STRIAE OF GENNARI
aka Striate Cortex aka VISUAL CORTEX, d/t presence of myelinated neurons in CALCARINE sulcus arranged like striae
Face identificaton/recognition area in brain
Inferior temporal cortex
Prosopagnosia
Difficulty in face recognition
Heschl’s Gyrus
Auditory cortex area 41, in superior temporal gyrus
Olfactory nucleus in thalamus
Dorso Median nucleus (DM)
Smell Brain
Limbic cortex aka Rhinencephalon.
Smell & memories - Etorhinal Cortex (alzheimer’s - earliest degeneration)
Smell & emotions - Amygdala
Different types of taste sensations
- Sweet
- Salt
- Sour
- Bitter
- UMAMI
Most addictive taste sensation
UMAMI [d/t Ajinomoto(monosodium glutamate)].
Relay station for taste sensation & nuclei
MEDULLA; Nucleus Tractus Solitarius.
Later reach VPM (Ventro postro medial) nucleus of Thalamus
Taste cortex
Insula