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5.0
OCCTH 585- NEURO QUESTIONS
LATEST 2024-2025 AND CORRECT
DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
How do we know the brain is capable of being changed?
ANS:
✓ 1. Skill acquisition: our brain layout must change to allow for the
acquisition of new capabilities
✓ 2. nervous system develops as you grow
✓ 3. aging: after age 21 we start to lose neurons so the neurons left over
will adapt to pick up the slack
✓ 4. Nervous system changes following injury or disease
✓ 5. Recovery: the brain will go through neuroplasticity to optimize what it
has left
The main communicating cells of the nervous system are:
ANS:
Examstudy - Stuvia US | Wednesday, 18 December 2024
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✓ neurons
In what ways does neuroplasticity occur?
ANS:
✓ 1. change in the properties of neurotransmission via a change in PSP
size or shape and/or a change in the transmitter released
✓ 2. changing the cell properties by changing the size/shape of the cell,
it's electrical properties/resistance and/or leakiness of the membrane
✓ 3. structural changes in the cell
Describe the process of unmasking
ANS:
✓ the process of exposing present synapses that were previously silent
You're working on reducing a recent lower limb amputee's phantom limb pain
when they ask you the reason for why they still feel sensation in a limb that is no
longer there. What phenomenon is the likely cause and how would you explain it?
ANS:
Examstudy - Stuvia US | Wednesday, 18 December 2024
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✓ They are experiencing unmasking. I would inform them that while
they are no longer getting sensory input from that limb, there are
neurons in that cortical area of the brain that have now been exposed.
These neurons receive inputs from other areas of the body which result
in the the sensation felt by the amputated limb.
Describe the process of dendritic pruning
ANS:
✓ If a neuron loses inputs from a cell following disease or injury and the
vacant spots are not filled, the dendrites will begin to retract causing
changes to the cell's shape/size and thus its behaviour
compare and contrast unmasking vs dendritic pruning
ANS:
✓ unmasking occurs immediately and results in functional changes to
the cells that influence its behaviour
✓
✓ dendritie pruning occurs over time and results in a loss of SA, brain
mass, and changes to the shape/size of the cell which leads to
changes in behaviour
Simply put, collateral sprouting is...
ANS:
Examstudy - Stuvia US | Wednesday, 18 December 2024
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5.0
✓ growth of new synapses onto a cell
When a neuron has vacant real estate, this space will emit a chemical signal and
nearby cells will begin to form synapses towards those vacancies, what is this
process called?
ANS:
✓ collateral sprouting
Provide characteristics of collateral sprouting
ANS:
✓ - requires time to grow new tissue
✓ - may or may not fill vacant space in the nervous sytem
✓ - is activity dependent (more active neurons= more collaterals)
✓ - produces functional changes as they provide more inputs leading to
domination of a cell
Neurogenesis
ANS:
✓ growth of new neurons
T/F: Adults can't generate new neurons in the central nervous system. Explain
Examstudy - Stuvia US | Wednesday, 18 December 2024
5.0
OCCTH 585- NEURO QUESTIONS
LATEST 2024-2025 AND CORRECT
DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+
How do we know the brain is capable of being changed?
ANS:
✓ 1. Skill acquisition: our brain layout must change to allow for the
acquisition of new capabilities
✓ 2. nervous system develops as you grow
✓ 3. aging: after age 21 we start to lose neurons so the neurons left over
will adapt to pick up the slack
✓ 4. Nervous system changes following injury or disease
✓ 5. Recovery: the brain will go through neuroplasticity to optimize what it
has left
The main communicating cells of the nervous system are:
ANS:
Examstudy - Stuvia US | Wednesday, 18 December 2024
,| OnlineExams | TestPrep | StudyResources | AcademicSuccess | ExamPreparation | QuizTime | LearningTools | Education | StudentSupport
5.0
✓ neurons
In what ways does neuroplasticity occur?
ANS:
✓ 1. change in the properties of neurotransmission via a change in PSP
size or shape and/or a change in the transmitter released
✓ 2. changing the cell properties by changing the size/shape of the cell,
it's electrical properties/resistance and/or leakiness of the membrane
✓ 3. structural changes in the cell
Describe the process of unmasking
ANS:
✓ the process of exposing present synapses that were previously silent
You're working on reducing a recent lower limb amputee's phantom limb pain
when they ask you the reason for why they still feel sensation in a limb that is no
longer there. What phenomenon is the likely cause and how would you explain it?
ANS:
Examstudy - Stuvia US | Wednesday, 18 December 2024
,| OnlineExams | TestPrep | StudyResources | AcademicSuccess | ExamPreparation | QuizTime | LearningTools | Education | StudentSupport
5.0
✓ They are experiencing unmasking. I would inform them that while
they are no longer getting sensory input from that limb, there are
neurons in that cortical area of the brain that have now been exposed.
These neurons receive inputs from other areas of the body which result
in the the sensation felt by the amputated limb.
Describe the process of dendritic pruning
ANS:
✓ If a neuron loses inputs from a cell following disease or injury and the
vacant spots are not filled, the dendrites will begin to retract causing
changes to the cell's shape/size and thus its behaviour
compare and contrast unmasking vs dendritic pruning
ANS:
✓ unmasking occurs immediately and results in functional changes to
the cells that influence its behaviour
✓
✓ dendritie pruning occurs over time and results in a loss of SA, brain
mass, and changes to the shape/size of the cell which leads to
changes in behaviour
Simply put, collateral sprouting is...
ANS:
Examstudy - Stuvia US | Wednesday, 18 December 2024
, | OnlineExams | TestPrep | StudyResources | AcademicSuccess | ExamPreparation | QuizTime | LearningTools | Education | StudentSupport
5.0
✓ growth of new synapses onto a cell
When a neuron has vacant real estate, this space will emit a chemical signal and
nearby cells will begin to form synapses towards those vacancies, what is this
process called?
ANS:
✓ collateral sprouting
Provide characteristics of collateral sprouting
ANS:
✓ - requires time to grow new tissue
✓ - may or may not fill vacant space in the nervous sytem
✓ - is activity dependent (more active neurons= more collaterals)
✓ - produces functional changes as they provide more inputs leading to
domination of a cell
Neurogenesis
ANS:
✓ growth of new neurons
T/F: Adults can't generate new neurons in the central nervous system. Explain
Examstudy - Stuvia US | Wednesday, 18 December 2024
