Limbic, basal gang., thalamus, decussation of tracts

Question 1

Limbic system/ limbic lobe

Answer 1

• Most noted for involvement in memory, but also plays a role in emotional behaviors
• Amygdala, hippocampus, septum, cingulate gyrus, fornix, mamillary bodies, posterior orbital frontal lobe, thalamus, hypothalamus.

Question 2

Basal ganglia includes

Answer 2

Caudate, putamen, globus pallidus

Question 3

Basal ganglia forms a circuit with the cortex: input form all areas of cortex->

Answer 3

caudate->putamen/globus pallidus->thalamus->motor cortex

Question 4

Basal ganglia is involved in

Answer 4

• motor control
• sequencing movements into smoothly executed programs
• stimulus-response learning
• cognitive abilities  memory, learning, language, speech, visuospatial abilities & conceptual abilities
• asymmetrical cognitive functioning evident
• personality and behavioral regulation

Question 5

Thalamus’ ventral portion projects to

Answer 5

Cortex in generalized way and modulates cortical activity

Question 6

Thalamus’ dorsal portion composed of

Answer 6

Nuclei that project to specific areas of brain:

• One group of nuclei relay sensory input from spinal cord to sensory cortex
• One group relays information between cortical areas
• One group relays information from subcortical structures – i.e. limbic system, basal ganglia, cerebellum - to cortex

Question 7

Thalamus is involved in

Answer 7

sensory, motor, attention, memory, emotions: asymmetrical cognitive and behavioral functioning evident in thalamus