What does brain fingerprinting measure with EEG?

What does brain fingerprinting measure with EEG?

• A. Heart rate variability
• B. Brain's spontaneous electrical activity and response to crime scene details
• C. Blood flow
• D. Skin conductance

Answer: (B)

Brain fingerprinting uses EEG to detect recognition of crime-scene details by measuring the brain’s electrical activity. In this approach, stimuli related to the case are presented while the brain’s responses are recorded. If the person recognizes a detail, the brain generates a distinct event-related potential—an evoked response—along with ongoing spontaneous activity. This combination reflects memory recognition rather than changes in other bodily systems. That’s why the description focuses on the brain’s spontaneous electrical activity and its response to crime-scene details. The other options refer to physiological measures (heart rate variability, blood flow, skin conductance) that are not captured by EEG.

Brain fingerprinting uses EEG to detect recognition of crime-scene details by measuring the brain’s electrical activity. In this approach, stimuli related to the case are presented while the brain’s responses are recorded. If the person recognizes a detail, the brain generates a distinct event-related potential—an evoked response—along with ongoing spontaneous activity. This combination reflects memory recognition rather than changes in other bodily systems. That’s why the description focuses on the brain’s spontaneous electrical activity and its response to crime-scene details. The other options refer to physiological measures (heart rate variability, blood flow, skin conductance) that are not captured by EEG.