1
NEU 311L Exam 1 Questions with Answers (100%
Correct Answers)
potential Answer: difference in charge between 2 pts
volts
current Answer: rate which charge flows
amps
resistance Answer: material's tendency to resist current
Ohms
frequency Answer: how often
Hz
amplitude Answer: peak to valley height of wave
mV
power Answer: amplitude^2
mV to uV
© 2025 All rights reserved
,2
25 mV is how many uV Answer: mV 10-3
uV 10-6
ex. 0.025V= 25mV= 25,000uV
types of EEg electrodes used Answer: + ones!
3 on scalp in class
what do large amplitude waves require Answer: synchronous activity of
a large # neurons
as distance between electrode & recording source decrease.. Answer:
amplitude decreases
- material (hair) decreases amplitude signals
EEG 10-20 system Answer: brain mapped with #s
odd # for L hemisphere
even # for R hemisphere
letters designate brain region
Alpha Wave Characteristics Answer: 8-10 waves/sec
© 2025 All rights reserved
, 3
parietal/occipital region predominantly alpha waves
more pronounced when eyes closed
occipital lobe Answer: info from retina--> thalamus--> cortex (lobe)
- neurons that are activated by light input to retina inhibit alpha rhythm
EEG noise Answer: use fast Fourier transform to decrease noise/view
signal
artifact= random fluctuation in data (head movement/eye blink)
EEG experiment conditions Answer: control= base sweet almond oil
experimental= lavender+ almond
research hypothesis vs. null Answer: research= independent variable
had an effect
null= independent variable had no effect
EEG experiment variables Answer: independent= scents
dependent= alpha waves
what should a hypothesis include Answer: dependent variable
© 2025 All rights reserved
NEU 311L Exam 1 Questions with Answers (100%
Correct Answers)
potential Answer: difference in charge between 2 pts
volts
current Answer: rate which charge flows
amps
resistance Answer: material's tendency to resist current
Ohms
frequency Answer: how often
Hz
amplitude Answer: peak to valley height of wave
mV
power Answer: amplitude^2
mV to uV
© 2025 All rights reserved
,2
25 mV is how many uV Answer: mV 10-3
uV 10-6
ex. 0.025V= 25mV= 25,000uV
types of EEg electrodes used Answer: + ones!
3 on scalp in class
what do large amplitude waves require Answer: synchronous activity of
a large # neurons
as distance between electrode & recording source decrease.. Answer:
amplitude decreases
- material (hair) decreases amplitude signals
EEG 10-20 system Answer: brain mapped with #s
odd # for L hemisphere
even # for R hemisphere
letters designate brain region
Alpha Wave Characteristics Answer: 8-10 waves/sec
© 2025 All rights reserved
, 3
parietal/occipital region predominantly alpha waves
more pronounced when eyes closed
occipital lobe Answer: info from retina--> thalamus--> cortex (lobe)
- neurons that are activated by light input to retina inhibit alpha rhythm
EEG noise Answer: use fast Fourier transform to decrease noise/view
signal
artifact= random fluctuation in data (head movement/eye blink)
EEG experiment conditions Answer: control= base sweet almond oil
experimental= lavender+ almond
research hypothesis vs. null Answer: research= independent variable
had an effect
null= independent variable had no effect
EEG experiment variables Answer: independent= scents
dependent= alpha waves
what should a hypothesis include Answer: dependent variable
© 2025 All rights reserved
