One disadvantage of is that it is limited to assessing acti

One disadvantage of _____ is that it is limited to assessing activity on the scalp A.PET B.MRI C.EEG D.fMRI

Solution

Choice C : EEG or electro encephalogram

Reason: While recording an EEG spectrum, surface leads are placed over the scalp which record the changes in various waveforms of the brain. This spectrum is localized only to the upper surfaca of the scalp and no information is gathered from the inner surface of brain. On the other hand, PET, MRI and fMRI give information about functional and biological changes of the brain. Thus, the only disadvantage with EEG is that it has limited access to upper surface of the brain or the scalp.