types of brain scans

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5 Terms

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electroencephalogram (EEG)

  • funcation

  • amplified recording of electrical activity on brains surface

  • measured by electrodes placed on scalp

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computed tomography (CT) scan

  • structure

  • x-ray pictures taken from different angles that are combined via computer to represent brain

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positron emission tomography (PET) scan

  • funcation and structure

  • brain activity through radio active glucose shown in parts of a task while preforming task

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magnetic resonance imaging (MRI)

  • structure

  • magnetic and radio waves to produce computer made images of soft tissue

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functional magnetic resonance imaging (fMRI)

  • structure and funcation

  • shows bloodflow (therefore brain activity) by comparing to successive MRI scans