AP PSYCHOLOGY

Detailed explanation-1: -Every student in psychology or neuroscience should be able to tell you that fMRI has good spatial resolution (as above), but poor temporal resolution. This is because the haemodynamic response imposes a fundamental limit on the time-precision of the measurement.

Detailed explanation-2: -It means that it takes ‘a long time’ to acquire two consecutive brain volumes. Usually, fMRI acquires one volume every 2 or 3 seconds. This is a disadvantage, since we have no signal of what happened between that time interval.

Detailed explanation-3: -Temporal resolution refers to how closely the measured activity corresponds to the timing of the actual neuronal activity. The temporal resolution with PET is poor compared to both fMRI, EEG and MEG, and is limited by both the technique and the metabolism of the tracer molecule.

Detailed explanation-4: -Indeed, it is true that blood oxygen level dependent (BOLD) functional magnetic resonance imaging (fMRI) has better spatial resolution and temporal resolution than PET, as well as no radiation exposure.