 A research technique in which one person is studied in depth in the hope of revealing universal principles.  Phineas Gage’s Accident

 A series of X-ray photographs taken from different angles and combined by computer into a composite representation of a slice through the body.  Reveals the brain’s structure

 An amplified recording of the waves of electrical activity that sweep across the brain’s surface;  these waves, measured by electrodes placed on the scalp, are helpful in evaluating brain function.

 A technique that sues magnetic fields and radio waves to produce computer-generated images that distinguish among types of soft tissue  this allows us to see structures within the brain.

 A visual display of brain activity.  Injection of a radioactive glucose  Reveals the brain’s functioning