AP PSYCHOLOGY

BIOLOGICAL BASES OF BEHAVIOR

STUDYING THE BRAIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
EEGs and ERPs measure:
A
Cortical brain activity
B
Subcortical brain activity
C
Both cortical and subcortical brain activity
D
None of the above
Explanation: 

Detailed explanation-1: -Electroencephalography (EEG) provides an excellent medium to understand neurobiological dysregulation, with the potential to evaluate neurotransmission. Time-locked EEG activity or event-related potential (ERP) helps capture neural activity related to both sensory and cognitive processes.

Detailed explanation-2: -EEG is a continuous measure of electrical brain activity. ERPs, on the other hand, are short segments of EEG data that are time-locked to particular events of experimental interest, and typically averaged over many trials of an experiment.

Detailed explanation-3: -Electroencephalography (EEG) EEG measures the electrical activity of the brain as a function of voltage potentials between different regions on the scalp. The electrical activity recorded is a summation of the activity of a large number of neurons in the cerebral cortex immediately beneath the skull.

Detailed explanation-4: -Event-Related Potentials (ERP) use similar equipment to EEG, 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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