quiz questions Flashcards
true or false. Tactile acuity performance increases when the detection threshold increases.
false - when the detection threshold decreases - tactile acuity increases
The ability to distinguish spatial detail in high resolution (e.g., two-point discrimination) will increase when…
the density of receptors in specific areas is high
If Quinn-ifer Lopez is interested in spatial activity distribution within the cortex, what technique should they use?
fMRI
When angular speed of a finger joint increases, proprioception/kinesthesia performance decreases. True or false .
false - increase in angular speed of finger increases perforamce
is propioception consiscous ?
no subconscious + reflexive
I kinesthesis subconscious or conscious
consciois + behavioural
sensory signal generatd by ones own movements are known as
re-afference
Which of the following cutaneous receptors are most likely responsible for tactile acuity?
Merkel
What is one drawback regarding the experimental technique of Functional Magnetic Resonance Imaging?
poor temporal reslution
Sensory signals generated by an “unexpected” source is known as
ex-afference
Which neurons are responsible for preparing actions, but also respond to sight or sound of an action being performed by another individual?
mirror neurons
Dwight Schrute is walking on a beach and a coconut falls and hits him on the head. Luckily (well, none of this is lucky…), it only damages one area of his brain. Dwight’s Parkinsonian-like symptoms include: bradykinesia, a slow, shuffling gate and resting tremor. Which area of his brain is likely damaged?
substantia nigra
what is dysmetria?
innacuracy of movement
what is ataxia
decompisition/jerky movement
what is hyptonia
reduction in resistance/muscle tone
____ is an excitatory neurotransmitter. ____ is inhibitory, and ___ is both in the basal ganglia
glutamate is excitaotry
GABA is inhibtoru
dopamine is both
all basal ganglia is relayed thru the ____
thalamus
is ataxia a symptom of parkinsons
no
what are teh 4 symptoms of parkinsons
resting tremor, rigidity, difficulty initiating movement, bradykinesia
n the feedforward model, what signal is used to generate the expected sensory feedback or corollary discharge? (Select the correct answer)
re-afference
Which of the following describes corollary discharge? (Select all that apply)
Excitatory response to motor command via sensory re-afference
Expected sensory signal that is compared to actual sensory consequences of one’s action
Expected sensory signal used to inhibit sensory signals generated by one’s own movements that would impede in performing the motor task
Answer,
Targets efferent copy to disrupt motor comman
exepcted senseory signal compred to actual sensory consequencs of ones activation
expected sensory single used to inhibit signals generated by one’s own movements - that would impede performing the task
Which of the following are true regarding Dopamine within the Basal Ganglia? (Select all that apply)
Depending on the receptor, dopamine is an inhibitory or excitatory neurotransmitter
Dopaminergic neurons within the Basal Ganglia are found within the Substantia Nigra
An excess of Dopamine causes the motor symptoms observed in Parkinson’s Disease
Dopaminergic neurons within the Basal Ganglia are found within the Striatum
Depending on the receptor, dopamine is an inhibitory or excitatory neurotransmitter
dopaminergic neurons within the Basal Ganglia are found within the Substantia Nigra
