Shows brain structure MRI Still image of brain Uses giant magnet to see

Shows brain structure mri still image of brain uses

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Shows brain structure MRI Still image of brain Uses giant magnet to see electric currents in brain Shows brain structure PET scan Radioactive dye in blood, track dye b/c of pulse Part w/ most dye = most blood = parts working the most Shows brain function fMRI like MRI but a video keeps track of blood flow w/ hemoglobin sees how flow changes as task continues PET scan and fMRI rely on subtraction technique Taking brain scans while at rest and subtracting those images from scans of brain while it is doing a task Will see some task specific after subtraction technique is used EEG Keeps track of where neurons in your brain are talking Tracks electrical activity If you take a lof of EEG readings and average them, you get ERP ERP Average of EEG readings 3 things to pay attention to What part of brain are you getting activity from? Do you have an increase or decrease in electrical activity? When do you have an increase or decrease? Brain fingerprinting Chapter 3 Stimulus Proximal: one that is closer to you (in your head), upside down when hits retina Distal: in the distance, one that you see normally Percept: interpretation of proximal stimulus Gestalt and Structuralists Structuralists: parts and then pattern Gestalt: pattern before parts Gestalt Principles Closure: mind automatically connects lines we think should be connected Similarity: group same things together: shape and color, color is stronger
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Proximity: likely to group things together that are closer to one another Good Continuation: if you have a straight line or smooth curve, mind says that line/curve continue if something interrupts it Common Fate: group things based on them going in same direction, only one that relies on motion Most Gestalt principles follow the law of Pragnanz Pragnanz: simplicity, minds default to simplest patterns They can compete with each other Usually multiple principles apply in real life 2 tend to be stronger than the others common fate similarity Emergence not Gestalt principle related to Gestalt “all or nothing” don’t see bits and pieces, either see it or don’t argues in favor of Gestalt, against structuralists Bottom Up Processes Bottom up- data driven Pieces of puzzle, then see picture Info from stimulus Top down- theory driven See picture, then use pieces to make picture Expectation of what you should see 3 Bottom up processing techniques template matching see something, match to template, find one that is exact match, that is what stimulus happens to be ( has to be an exact match )
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