Lecture 4 - which function(zaps it on every person Lucid on...

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Lecture 4 Functional Neuroimaging 1) Computerized Axial Tomography 2) Positron Emission Tomography 3) Functional Magnetic Resonance Imaging (can be uses with high order imaging for ex. Emotions) - less than a mm of resolution, precise. Bad temporal resolution ( bad resolution in time, lag) - show which areas of the brain is active, picks up Blood Oxygen Level Dependant. Datas are passive (analyzed after the scan). T value shows statistically how a brain part responded to the baseline BLOD signal. Red/blue depending on the study can represent different things. 4) EEG electroencephalography - Great temporal resolution, bad space resolution -Picks up electronical signals from the brain in real time - Average ERP waveform (voltage vs time) of multiple people Shortcoming of PET scan: - not precise, only rough outlines - uses a radioactive tracer 5) MEG Magnetoencephalography 6)TMS Transcranial magnetic stimulation * used in the treatment of depression. Need to know which areas are responsible for
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Unformatted text preview: which function (zaps it) on every person Lucid on ABC news: EEG research. All neuroimaging are correlation , not cause/effect Behavioral Measures Mental chronometry: response time (RT), accuracy , eye movement Assumptions: 1) Neural activity underlines cognition 2) Functions can be localized 3) Mental representations are stable 4) System (Brain) is stable 5) Behavorial tasks tap directly into the workings of specialized brain functions Analytic reductionism: Breaking down into small components ex. image of sea ( how do we see shapes/color etc) Perception: Chapter 3 Sensation: stimulus detection (touch/light) Perception: interpretation of sensation (loud/dry) Senses: Visual- Light Auditory- Sound Touch – pressure (tactile) Taste (gustatory) Smell (olfaction) Vestibular (posture) Somatosensory Vision: Myths 1) Seeing as a faithful record (optical illusions) 2) Vision is passive 3) The eyes see...
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  • Spring '10
  • JelenaRistic
  • Positron emission tomography, Medical imaging, Functional magnetic resonance, Functional magnetic resonance imaging, Bad temporal resolution

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Lecture 4 - which function(zaps it on every person Lucid on...

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