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16 Cards in this Set
- Front
- Back
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Sternberg Memory test findings
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Found a decrease R.T with increase in set size
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Sternberg Memory Methodology
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P's told shown 1,2,or 4 letters Told to memorise + recall |
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4 Stages: Mental Operations
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1. Encode 2. Compare 3. Divide 4. Respond |
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What does cognition try understand?
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Mental representations Mental operations |
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Posner Letter Matching task: Findings
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If both letters the same- increased R.T Different categories- decreased R.T - required more processing therefore decreased the speed of R.T |
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Name 3 Experimental Techniques
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1. Animal Research 2. Neurology 3. Brain Imaging |
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1. Animal Research - Electrophysiology methods
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Response of cells in visual cortex Fixate Electrode implanted onto single cell Single cell recorded- fired when stim in receptive field/ Field of view Recorded |
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2. Neurology: looks into......
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Traumas Lesions Diseases Disorders Tumours |
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Lesions can lead to.......
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a loss in function
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Single Disassociation
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Lesion to brain structure A disrupts function X but not function Y. Infer that function X and function Y are independent of each other in some way. |
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Double Disassociation
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If one can demonstrate that a lesion in brain structure A impairs function X but not Y, and further demonstrate that a lesion to brain structure B impairs function Y but spares function X, one can make more specific inferences about brain function and function localization.
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Transcranial Magnetic stimulation (TMS) |
Uses coil + magnets Causes virtual lesions Temporarily deactivates parts of the brain |
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EEG
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Measures + records the electrical activity of your brain. Electrodes attached to head Records your brains electrical activity |
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MEG
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MEG scan, is an imaging technique that identifies brain activity and measures small magnetic fields produced in the brain
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Group studies
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Compare brains However......Difficult Difficult to classify- individual differences |
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3. Brain Imaging: fMRI (functional magnetic resonance imaging)
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Non invasive Electrical field affects hydrogen atomic nucleus Changes blood flow Releases energy- record images Changes metabolic demand e.g. for |
