NEU 311L UPDATED ACTUAL Exam
Questions and CORRECT Answers
As described in the video, a Likert scale will be used during the class experiment to have
participants self-report how relaxed they feel. If a participant filled out the Likert scale in the
way shown in this image, which score best approximates the score that should be given for this
response? Why? - CORRECT ANSWER - 27. The Likert scale we are using ranges from 0
(not relaxed) to 100 (extremely relaxed). Each small tick mark is 1 mm. Each cm (indicated as a
whole number on the ruler) is 10 mm. The blue line is placed somewhere between the 2 cm and
the 3 cm marker, so the rating is somewhere between 20-30. The blue mark appears close to the
7th tick mark past the 2, so a score of 27 is reasonable for this data point.
tick mark on 2.7 ruler
If we altered our in-class experiment such that 10 participants were exposed to the almond oil
condition for several minutes, and later that day the same 10 participants were exposed to the
lavender oil condition, which test should be used to see if there is a significant difference
between the means of the control and experimental conditions? Why? - CORRECT
ANSWER - Paired samples (repeated measures) t test. This is because a t test is used to
compare two means. It is paired samples because the 10 people in the study were each tested two
times, and so you have a pair of data points for each participant.
Which of the following statements is TRUE about electroencephalography (EEG)? - CORRECT
ANSWER - It picks up signals from superficial layers of the brain, such as the cortex.
What does the subject who is being recorded from likely doing at about the 4:00 min time point
(the moment near the transition from the end of the dark blue-shaded period to the light blue-
shaded period)? How do you know? - CORRECT ANSWER - They opened their eyes.
The yellow & pink band that appears around 2 minutes into the recording is about 10 Hz and
thus is in the frequency range of alpha waves. The 10 Hz band seems to fire at a rather consistent
amplitude for the next two minutes, at which time is abruptly disappears. Since it is typical for
alpha waves to be strongest when one closes their eyes, it is reasonable to predict that the subject
closed their eyes at around the 2:00 minute mark and then opened them again around the 4:00
minute mark.
Which statement is FALSE? - CORRECT ANSWER - Time is plotted on the X axis of the
PSD plot.
, Frequency is plotted on the X axis in a PSD plot, not time. The PSD plot does not provide time
information. Thus, the statement "Time is plotted on the X axis of the PSD plot." is the false
statement.
Which of the following should NOT be included in a figure legend for NEU311L? - CORRECT
ANSWER - Whether or not the results support the hypothesis
If a student submits a Great Aunt Sarah assignment that is assessed by the assistant instructor in
the following way, which grade will they receive?
Totally complete
Mostly accurate
Somewhat clear & engaging - CORRECT ANSWER - 80% (8/10 points)
If you need to make 0.5 liters of 1 M NaCl, how much NaCl would you need to dissolve in 0.5
liters of water?
(The molar mass of NaCl is 58.44 g/mol) - CORRECT ANSWER - 29.22 g
You have 1 liter of a 10 M caffeine solution in beaker A. You take 500 ml of that 10 M solution
and put it into beaker B. You also add 500 ml of water to beaker B. What caffeine concentrations
do you now have in beaker A and in beaker B? - CORRECT ANSWER - Beaker A: 10 M
Beaker B: 5 M
Which of the following would NOT be something that Parkinson's patients should consume in
order to treat their symptoms and why? - CORRECT ANSWER - Dopamine (because it
does not cross the blood-brain barrier)
Which of the following statements is true about the data analysis for the drosophila model of
Parkinson's disease exercise? - CORRECT ANSWER - If you find a significant main
effect of the ANOVA, you will need to follow up by examining several post-hoc comparisons,
one of which will be to determine if the activity of flies in the rotenone + melatonin condition is
significantly different from the rotenone only condition.
Questions and CORRECT Answers
As described in the video, a Likert scale will be used during the class experiment to have
participants self-report how relaxed they feel. If a participant filled out the Likert scale in the
way shown in this image, which score best approximates the score that should be given for this
response? Why? - CORRECT ANSWER - 27. The Likert scale we are using ranges from 0
(not relaxed) to 100 (extremely relaxed). Each small tick mark is 1 mm. Each cm (indicated as a
whole number on the ruler) is 10 mm. The blue line is placed somewhere between the 2 cm and
the 3 cm marker, so the rating is somewhere between 20-30. The blue mark appears close to the
7th tick mark past the 2, so a score of 27 is reasonable for this data point.
tick mark on 2.7 ruler
If we altered our in-class experiment such that 10 participants were exposed to the almond oil
condition for several minutes, and later that day the same 10 participants were exposed to the
lavender oil condition, which test should be used to see if there is a significant difference
between the means of the control and experimental conditions? Why? - CORRECT
ANSWER - Paired samples (repeated measures) t test. This is because a t test is used to
compare two means. It is paired samples because the 10 people in the study were each tested two
times, and so you have a pair of data points for each participant.
Which of the following statements is TRUE about electroencephalography (EEG)? - CORRECT
ANSWER - It picks up signals from superficial layers of the brain, such as the cortex.
What does the subject who is being recorded from likely doing at about the 4:00 min time point
(the moment near the transition from the end of the dark blue-shaded period to the light blue-
shaded period)? How do you know? - CORRECT ANSWER - They opened their eyes.
The yellow & pink band that appears around 2 minutes into the recording is about 10 Hz and
thus is in the frequency range of alpha waves. The 10 Hz band seems to fire at a rather consistent
amplitude for the next two minutes, at which time is abruptly disappears. Since it is typical for
alpha waves to be strongest when one closes their eyes, it is reasonable to predict that the subject
closed their eyes at around the 2:00 minute mark and then opened them again around the 4:00
minute mark.
Which statement is FALSE? - CORRECT ANSWER - Time is plotted on the X axis of the
PSD plot.
, Frequency is plotted on the X axis in a PSD plot, not time. The PSD plot does not provide time
information. Thus, the statement "Time is plotted on the X axis of the PSD plot." is the false
statement.
Which of the following should NOT be included in a figure legend for NEU311L? - CORRECT
ANSWER - Whether or not the results support the hypothesis
If a student submits a Great Aunt Sarah assignment that is assessed by the assistant instructor in
the following way, which grade will they receive?
Totally complete
Mostly accurate
Somewhat clear & engaging - CORRECT ANSWER - 80% (8/10 points)
If you need to make 0.5 liters of 1 M NaCl, how much NaCl would you need to dissolve in 0.5
liters of water?
(The molar mass of NaCl is 58.44 g/mol) - CORRECT ANSWER - 29.22 g
You have 1 liter of a 10 M caffeine solution in beaker A. You take 500 ml of that 10 M solution
and put it into beaker B. You also add 500 ml of water to beaker B. What caffeine concentrations
do you now have in beaker A and in beaker B? - CORRECT ANSWER - Beaker A: 10 M
Beaker B: 5 M
Which of the following would NOT be something that Parkinson's patients should consume in
order to treat their symptoms and why? - CORRECT ANSWER - Dopamine (because it
does not cross the blood-brain barrier)
Which of the following statements is true about the data analysis for the drosophila model of
Parkinson's disease exercise? - CORRECT ANSWER - If you find a significant main
effect of the ANOVA, you will need to follow up by examining several post-hoc comparisons,
one of which will be to determine if the activity of flies in the rotenone + melatonin condition is
significantly different from the rotenone only condition.
