Brain Function Lecture 03 Flashcards Preview

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Flashcards in Brain Function Lecture 03 Deck (26):

How do granular neurons look like and what do they secrete?

1. short axons that act as interneurons

2. glutamate (excitatory) GABA (inhibitory)


The first three layers of the cerebral cortex perform what tasks?

1. perform intracortical associated functions


What happens in the 4th layer of the cerebral cortex?

1. specific sensory signals terminate


What is the thalamocortical system?

1. this system consists of ongoing neural signals between nuclei in the thalamus and neurons in all modular areas of the cortex.


What is responsible for the direct connection with the cerebral cortex and specific muscles?

primary motor areas


What areas is responsible for detecting specific sensations?

primary sensory areas


What area of the brain provides patterns of motor activity?

secondary motor areas


What areas analyze the meaning of specific sensory signals?

secondary sensory area


The parieto-occipitotemporal association area is responsible for what?

1. analyze spatial coordinates
2.angular gyrus area
3. area to name objects


The prefrontal association area is responsible for what?

1. receive preanalyzed sensory information that is necessary for planning effective movement.

2. the thought processes are carried to basal ganglia through the caudate portion.


What is Broca's area responsible for?

1. helps with word formation
2. works closely with wernicke's area and mostly dominant on the Lt side of brain


What is most associated with the Limbic area of the brain?

1. behavior
2. emotions
3. motivation


What is Wernicke's area most well known for?

1. language comprehension


What components all come together at Wernicke's area, in the posterior superior temporal lobe?

1.somatic association area
2. visual association area
3. auditory association area.


What are the different cortical neurons?

1. granular (stellate) neurons

2. Fusiform neurons

3. Pyramidal neurons


What is the major concern/function of Broca's area?

word formation


What portion of the brain plays the largest role in intelligence?

Wenicke's are as activation of this area can describe memories from multiple sensory inputs


What regions all collectively combine at Wernicke's area?

1. primary visual
2. somatic interpretive areas
3. auditory interpretive area


What regions of the brain are in general NOT symmetric in terms of strength signal based on activation?

1. 95% population dominant on left hemisphere Wernicke's area

2. Broca's area dominant on left hemisphere

3. 90% population dominant in left hemisphere for hand control


What is prosopagnosia and what area is generally injured with this condition?

1. inability to recognize faces

2. damage to the facial recognition area, which consists of input from occipital lobe and temporal lobe


What are some of the functions/tasks that that prefrontal cortex allows us to perform?

1. complex problem solving
2. sequence of tasks, multitasking
3. aggression level
4. social etiquette
5.maintainance of purpose

the development of this area can affect the level strength of these signals


What is declarative memory?

1. refers to memory of various details of integrated thought.

-surroundings, time, causes, meanings, thought deductions


What is reflexive memory?

1. this memory is associated with motor activities.

2. riding a bike, shooting a gun, starting an IV


What is short term memory?

exemplified memory of a number, that lasts until the thought is broken


What is intermediate long-term memory?

1. lasts minutes or weeks and can become long-term with activation off enough traces.


What is habituation?

1. the ability of the body to become accustomed to a non-threatening stimulus.