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cog chp 2 top 3

Methods of Studying the Brain

QuestionAnswer
What did the Phrenologists State? Different parts of the brain do different things Size Matters different faculties work independently of each other All found without evidence
Phineas Gage Damaged what and that lead to what? Damaged= Prefrontal Cortex Lead to=lack in organizing thoughts and behavior
What are the 2 types of Aphasia? Brocca Aphasia Wernicke Aphasia
Define Brocca Aphasia Lack of speech production
Define Wernicke Aphasia Lack of understanding speech
What causes the lack for the aphasias? Cortical Lesions
Where is the cognitive process? Spatial Resolution
Define Relatively high spatial resolution More space for cognitive processing
Define Relatively Low spatial resolution Less space for cognitive processing (more precise)
When does the cognitive processing take place? Temporal Resolution
Define relatively high temporal resolution Occurred within the last hour
Define relatively low temporal resolution occurred with the last millisecond
T or F, there is a method for high spatial and temporal resolution F
Name the 5 brain scales Brain Lesions EEG and MEG FMRI PET
Define CT scans Computed Tomography (CT or CAT) X-rays
Define Brain Lesion Resolutions and Measures Spatial :Varies temporal : Low Measures: Abnormalities
Define EEG and MEG Resolutions and Measures Spatial: Low Temporal: High Measure: electrical activity
Define FMRI Resolutions and Measures Spatial: High Temporal: low Measure: Blood Oxygen
Define PET Resolutions and Measures Spatial: High Temporal: low Measure: Blood flow
Define MRI Magnetic Resonance Imaging -Giant magnet (3T) and radiofrequency -Radio pulse dependent -more neuronal activity -> more blood flow in brain-> signals magnetic field-> MRI measures it
__ difference in activation for the procedure of the MRI .3%
T or F, the Brain is active during MRI scanning T
Define FFA Fusiform Face Area Facial Recognition active
Define PPA Parahippocampal Place Area Place Recognition active
T or F, Awareness activity is not what the person is aware of, it's just the stimulus F
Define EEG Electrocephalography INTERNALLY: Neuron communication is electrical Input receives and output releases EXTERNALLY: Neuron communication is chemical communicates with the released NT
Define PET Position Emission Tomography First High spatial scanning technique Injection of radioactive isotopes-> Isotopes bound to brain molecules-> brain produces gamma rays-> PET measures the radiation LOWER SPATIAL THAN MRI
T or F, all but brain lesions give correlational data T
Created by: Melis2003
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