You use an EEG to measure an individual's brain activity during a task. Which of the following is true? Select one:

a.
Amplitude of the EEG waves roughly corresponds to the number of action potentials per second of the neurons under the electrode

b.
To see meaningful task-related changes in voltage, you would need to have participants perform the task multiple times

c.
Frequency of the EEG waves roughly corresponds to the synchronicity of the neurons under the electrode

d.
All of the other answers are correct

e.
The EEG activity of the hippocampus would be easily separable from the EEG activity of the amygdala