Which neuroscience technology has transformed market research by allowing researchers to measure blood oxygen levels in the brain while consumers view products or advertisements?

Consumer behavior research has evolved dramatically with neuroscience techniques. These methods allow marketers to access subconscious responses that traditional surveys can't reveal. Today's sophisticated technologies can measure brain activity, eye movement, facial expressions, and physiological responses to determine genuine consumer reactions to products and advertising. How well do you know the cutting-edge technologies being used in neuromarketing research?

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Functional Magnetic Resonance Imaging (fMRI)
Electroencephalography (EEG)
Galvanic Skin Response (GSR)
Facial Action Coding System (FACS)