Forebrain Flashcards
Motor Cortex
Precentral Gyrus
Somatosensory Cortex
Post-Central Gyrus
Precentral Gyrus
Motor Cortex
Post-Central Gyrus
Somatosensory Cortex
Somatosensory Cortex Image

Motor Cortex Homunculus Image

Broca’s Area
Located in Frontal cortex
responsible for speech production
Wernicke’s Area
Temporal lobe
can’t produce meaningful language
“word salad”
Telencephalon Functions
sensory
motor
language
Addt’l Telencepahlon Regions
- Basal ganglia
- motor function
- amygdala
- fear
- emotional processing
- hippocampus
- memory/learning
- spatial navigation
How many layers in neocortex?
6
afferent
incoming (arrives)
efferent
leaving (exits)
Internal Capsule
large network of white matter tracts for axons entereing and leaving the cerebral cortex
- anterior limb
- genu
- posterior limb
Internal Capsule labeling

Name the 3 types of cortical connecting fibers
- Association
- Commissural
- Projection
Define Association Fibers
Fibers connecting regions within the same hemisphere
Define Commissural fibers
Fibers connecting regions in oppostie hemispheres
Define Projection fibers
a) axons that originate outside telencephalon and project to cortex
b) axons that orignate in cortex and project elsewhere
Parts of Diencephalon
Thalamus/Hypothalamus
(dorsal thalamus, hyopthalamus, ventral thalamus, epithalamus)

Function of Diencephalon
Processing center for information between sensory systems and cortex
Location of Diencephalon
3rd ventricle is a median between the two thalami.
Thalamus is wall of ventricle
Name nuclei of Thalamus (dorsal thalamus)
- Anterior
- Medial
- Lateral (dorsal and ventral tiers)
- Intralaminar
Input/Output of Anterior Nuclei of Thalamus
Input: limbic-related projectoions from the mammillary bodies + hippocampus
Output: cingulate gyrus (via internal capsule)


