Cerebral Cortex Org & Fxn Flashcards
Broca’s Area
- WORD Formation area
- Works closely with Wernicke’s area
Short-Term Memory: Def and Examlple
- Lasts only as long as person thinks of it
- Ex: Telephone number
Motor areas for controlling Hands are also dominant on which hemisphere?
Left
What happens if you cut the Corpus Callosum?
- Block of transfer info from Wernicke’s area to Non-dominant Motor Cortex
- Prevention of the transfer and visual information from Right side to Wernicke’s area
- 2 SEPARATE conscious portions of the Brain
Structural changes in Long Term Memory
- Increase in
- Vesicle release
- # of transmitter vesicles released
- # of presynaptic terminals - Changes in DENDRITIC spines
Intra-Cortical Associations fxn are associated with which Cerebral Cortex Layer?
I, II, and III
Ex of Association Areas
- Broca’s Area
- Wernicke’s Area
- Prefrontal
- Limbic
- Parieto-Occipito-Temporal Area
Fibers of the Thalamus are from what layer of the Cerebral Cortex?
VI
Secondary Motor Area
Provide PATTERNS of Motor ACTIVITY
The Termination of most incoming specific sensory signals are from what layers of the Cerebral Cortex?
IV only
Reflexive Memory
Aka Skill memory
- Associated with MOTOR activities
Pyramidal Neurons
- LARGE output neurons
- Cell bodies are TRIANGULAR in shape
Prosopagnosia
Inability to recognize faces
Primary Motor areas
DIRECT connections with specific MUSCLES
Primary Sensory Areas
Detect Specific SENSATIONS
- Hot
- Cold
Characteristics of Wernicke’s Area
- Associated with Language COMPREHENSION
- Where Somatic, Visual & Auditory assoc areas MEET
Immediate Long Term Memory
- Last Minutes to Weeks
- May become Long-term memory if memory traces are activated enough
Origins of MOST output signals come from what layers of the Cerebral Cortex?
V and VI
Prefrontal Association Area Characteristics
- Receives Pre-analyzed sensory info (Planning)
- Carries out “THOUGHT” Processes
Propose of the Corpus Callosum?
Connects one hemisphere to another
The types of Cortical Neurons in the Cerebral cortex
- Granular (Stellate)
- Fusiform
- Pyramidal
“GPF”
Prefrontal LOBOTOMY Characteristics
- Loss to solve COMPLEX problems
- Inappropriate social responses
- Cannot carry long trains of thought
- Decrease in levels of aggressiveness
T/F: When the Thalamic connections are cut, the fxn of many cortical areas. Become almost completely lost.
True
How many neurons are in the Cerebral cortex?
100 Billion
Fusiform Neurons
- Smaller Output neurons
- Send info OUT from the Cerebral Cortex
Broca’s Area is almost always dominant on what side of the brain?
LEFT
The Temporal portion of the brain is closely associated with what?
The Limbic system
Granular Neurons
Aka Stellate
- Short axons
- INTERNEURONS
- BOTH Excitatory and Inhibitory
Secondary Sensory Areas
Analyze MEANINGS of Specific sensory signals
Characteristics of the Limbic System
Concerned w/
- Behavior
- Emotions
- Motivation
What area plays the Greatest Single role of any part of the Cerebral Cortex for intelligence?
Wernicke’s Area
Declarative Memory
Memory of various DETAILS of an Integrated thought
How many layers are in the cerebral cortex?
6
The output of the Prefrontal association area passes through what?
The CAUDATE portion of the Basal Ganglia
Declarative memory might include memory of what?
- Surroundings
- Time relationships
- Causes of experiences
- Meaning of experiences
- Deductions
Broca’s Area is dominant in which hemisphere
Left
Association Areas
Receive and Analyze signals SIMULTANEOUSLY for Multiple MOTOR & SENSORY Cortices
