A number of techniques have been developed that allow us to examine the moment-by-moment activity levels of specifically defined brain areas. These techniques are called

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Neuroimaging techniques, such as fMRI and PET scans, allow us to look at the activity levels of specific brain areas over time by measuring blood flow and metabolic activity. EEG measurement can show us overall patterns of brain activity but not specific areas, chronometric techniques measure reaction times and processing speed, and psychometric assessment measures cognitive abilities and personality traits. None of these other techniques specifically allow us to examine moment-by-moment activity of specific brain areas.

A Number of Techniques Have Been Developed That Allow Us