Group Presentations for Exam 3 Flashcards
In Matsumoto et al., Task 1 required the subjects to let go of a bar in response to a green dot. A correct response for a high incentive cue yielded a liquid reward. Which of the following statements is FALSE regarding the results of Task 1?
a) Area TE is involved in general categorization and is necessary for making discriminations that use basic comparisons.
b) High incentive cues resulted in lower error rates than low incentive cues for all categorization sets.
c) The monkey’s error rates were mildly affected post-lesion.
d) Implicit categorical learning was exhibited by the control monkeys.
A
In Matsumoto et al., when the monkeys performed the explicit categorization task (Task 2), which of the following results were true?
a) Most of the monkeys took over 10 sessions to figure out the right procedure
b) The monkeys learned that releasing the bar when the light was green for the cat stimuli was the best choice
c) The monkeys’ percent correct mildly declined post-lesion..
d) Some of the TE monkeys never figured out the right procedure.
C
In Matsumoto et al., the TE ablations in Task 3 _______ the visual acuity in monkeys, suggesting that the impairments were due to their performance in ____________________.
a. Did not impact; visual acuity
b. Did not impact; categorization and discrimination learning tasks
c. Did impact; visual acuity
d. Did impact; categorization and discrimination learning tasks
B
In Matsumoto et al., area TE was found NOT to be wholly responsible for categorization. What other brain areas were considered to be possible candidates for future studies?
a. Perirhinal cortex
b. Area TEO
c. Amygdala
d. All of the above
D
The study by Matsumoto et al. consisted of 4 tasks that Area TE lesioned monkeys performed. Task 4 required the subjects to learn to associate an object or pattern with a food reward. Matsumoto et al. included this study to confirm that the effect their lesions matched past reports of impaired pattern discrimination.
True/False?
TRUE
The \_\_\_\_\_ stream was shown to associate more with animate/inanimate categorization while the \_\_\_\_\_ stream dealt more with action/non-action categorization. A. lateral; dorsal B. lateral; ventral C. dorsal; ventral D. ventral; dorsal
D
Visual information transitions from shape to categorical representation as you move along the _______ - _______ axis.
A. Rostral; Caudal
B. Ventral; Dorsal
C. Posterior; Anterior
D. Medial; Lateral
C
There was a \_\_\_\_ correlation between perceived shape index and category similarity. A. Negative B. Positive C. None D. Insignificant
B
Visual information is processed in at least 2 pathways, including: A. Ventral stream/Lateral stream B. Ventral stream/Dorsal stream C. Cranial stream/ Lateral stream D. Medial stream/Dorsal stream
B
Shape sensitive brain regions were observed in two clusters. Cluster I represented the extrastriate system. True/False?
False
The PD rat model from Hsieh et al. 2015, showed reduced rTMS-induced motor plasticity. True/False?
True
Injecting 6-OHDA into the substantia nigra mimicked Parkinson's Disease, because 6-OHDA \_\_\_\_\_\_\_\_ dopaminergic neurons. A. Replenished B. Ablated C. Strengthened D. Inhibited
B
iTBS \_\_\_\_\_\_ the size of MEPs for 30 min or more. In the same conditions cTBS \_\_\_\_\_\_ the size of MEPs for at least 30 min. A. Decreased, decreased B. Increased, increased C. Increased, decreased D. Decreased, increased
C
\_\_\_\_\_\_\_\_\_\_\_ are known to be crucial for rTMS to produce motor plasticity. A. NMDA receptors B. AMPA receptors C. G-Protein receptors D. Ion Channels
B
iTBS has some kind of facilitatory effect on MEPs in 1-wk PD rats, but not in 4-wk PD rats. True/False
True
Figure 1: At 2 weeks, there is no difference in the percentage or frequency of the firing neurons in wild-type mice versus ATXN1 mice. At 5 weeks, the number of firing neuron in SCA1 mice decreases, but the firing frequency of these neurons remains the same as those in wild-type mice. What is observed at 15 weeks?
a. The number of firing neurons and firing frequency in ATXN1 mice resemble that seen at 2 weeks
b. The number of firing neurons in ATXN1 mice continues to decrease.
c. The firing frequency in ATXN1 mice increases and surpasses that of the wild-type mice
d. The number of firing neurons in ATXN1 mice is restored, but the firing frequency is lowered.
D