AP PSYCHOLOGY

BIOLOGICAL BASES OF BEHAVIOR

STUDYING THE BRAIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which scanning techniques can detect neural activity within milliseconds?
A
fMRI
B
EEGs
C
ERPs
D
None of the above
Explanation: 

Detailed explanation-1: -ERPs can be reliably measured using electroencephalography (EEG), a procedure that measures electrical activity of the brain over time using electrodes placed on the scalp. The EEG reflects thousands of simultaneously ongoing brain processes.

Detailed explanation-2: -Ways of Studying the Brain: Scanning Techniques, including Functional Magnetic Resonance Imaging (fMRI); Electroencephalogram (EEGs) and Event-Related Potentials (ERPs); Post-Mortem Examinations-Psychology Hub.

Detailed explanation-3: -EEGs are frequently used in experimentation because the process is non-invasive to the research subject. The EEG is capable of detecting changes in electrical activity in the brain on a millisecond-level. It is one of the few techniques available that has such high temporal resolution.

Detailed explanation-4: -A key advantage of ERP methods is that they provide measures of neural activity with very high temporal resolution. The superior temporal resolution of ERPs makes them well suited to examinations of neural events responsible for human memory, which can potentially be monitored on a millisecond-by-millisecond basis.

Detailed explanation-5: -Event-Related Potentials (ERPs) Event-Related Potentials (ERP) use similar equipment to EEG, i.e. electrodes attached to the scalp. However, the key difference is that a stimulus is presented to a participant (for example a picture/sound) and the researcher looks for activity related to that stimulus.

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