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The brain works very well for discrimination studies

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Unformatted text preview: ial (ERP)   Infants are fitted with a stretchy cap full of sensors -sensors pick up electrical activity from various parts of the brain -works very well for discrimination studies 14 5/15/13 ERP   Pros     More sensitive/direct than behavioral measures Cons     Expensive Time consuming to fit the infant with the cap -many infants resist the cap and become fussy during testing -difficult to tell exactly where in the brain a response is occurring NIRS   Near Infra-red Spectroscopy Infants are fitted with a soft stretchy cap filled with silicone sensors   -uses infared sensors that emit light in brain -the sensors measure oxygenation levels in different areas of the brain -indirectly measures how active these portions of the brain are NIRS   Pros   More direct measure of infant responses to stimuli -works well with thinner sjulls and lighter/less hair -derermne the areas of the brain that are more responsive   Cons   Expensive -sensitive to movement -caps can be pulled off by older infants 15 5/15/13 fMRI   Functional Magnetic Resonance Imaging   Indirectly measures areas of brain activation -uses trong magnet to measure ratio of oxygenated and deoxygenated blood fMRI   Pros     Very good at showing where activation occurs in the brain Cons   Very expensive -extremely sensitive to movement artifact -must be in a scanner-limits stimuli to auditory or visual -infants are usually sedated 16...
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