Psych 115 Midterm 2 Practice Questions and Correct Answers
3 views 0 purchase
Course
PSYC 115
Institution
PSYC 115
Thalamus -gateway to the cortex -sensory/motor info passes through it to/from cortex Motor commands Vision Hearing Touch Taste (NOT smell/olfactory)
Each part of thalamus is reciprocally connected to specific parts of the ____ each part of thalamus is reciprocally connected to specific parts of th...
Psych 115 Midterm 2 Practice Questions
and Correct Answers
Thalamus ✅-gateway to the cortex
-sensory/motor info passes through it to/from cortex
Motor commands
Vision
Hearing
Touch
Taste
(NOT smell/olfactory)
Each part of thalamus is reciprocally connected to specific parts of the ____ ✅each
part of thalamus is reciprocally connected to specific parts of the CORTEX.
-cortex and thalamus are "close buddies"
Rat brain vs. Cat brain vs. Human brain ✅rat brain has NO GYRI
Cat has some
Human has MANY GYRI
Frontal lobe ✅motor control
Planning
Decision making
-damage causes paralysis, personality disorder
Cingulate gyrus/cortex ✅motivation
Emotion
Memory
Cerebral cortex: why wrinkly? ✅-single large sheet of tissue
-sulci and gyri (sulcus, gyrus) used as landmarks
-sulcus is groove, gyrus is bump
Limbic system ✅group of interconnected brain structures, cortical and subcortical. Not
all in telencephalon
-hippocampus
-amygdala
-cingulate cortex
-anterior thalamus & mammillary bodies
Hippocampus ✅"seahorse"
Learning and memory
Amygdala ✅"almond"
Emotion, anxiety
Cingulate cortex ✅cortex surrounding cingulum
Memory and emotion
Anterior thalamus and mammillary bodies ✅subcortical inputs to hippocampus and
limbic cortex regions
Basal ganglia ✅MOTOR CONTROL and DECISION MAKING
Group of interconnected brain structures
-play key role in "gating" motor commands
Ventral tegmentum and substantia nigra ✅basal ganglia areas are targets of dense
dopaminergic inputs from VT and SN
Projection neurons in cortex vs. In basal ganglia ✅cortical projection neurons in cortex
= glutamatergic (excite other areas of brain)
Projection neurons in basal ganglia = dopaminergic (inhibit other areas)
Commissures ✅carry info from one side of brain or spinal cord to the other
-axon bundles
Ex. Corpus callosum and anterior white commissure
Corpus callosum ✅major commissure that connects left and right cerebral
hemispheres in brain
Anterior white commissure ✅in spinal cord: where dorsal horn interneurons that are
excited by Adelt and C fibers cross the midline
What is white matter made of? ✅cortical regions communicate via TRACTS of axons.
-short (to nearby cortical regions)
-longer (to other parts of cortex)
-connections between hemispheres via corpus callosum
-Long, multisynaptic chains through subcortical regions
Axon bundles in CNS are called ___ and PNS are ___ ✅CNS: tracts, PNS: nerves
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller twishfrancis. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
