APA 2120 Lecture Notes - Lecture 15: Magnetoencephalography, Electroencephalography, Magnetic Resonance Imaging
4 Dec 2016
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Document Summary
Methods: descriptive outcome hit target yes/no, quantifying the movement analysing the movement itself, neural activity - study of brain and central nervous system related to movement. Behavioural: black box processes lead to observed behaviour. Neurophysiology: specific neural activities lead to observed behaviour. Modify the environment with which one is interacting. Have an object move/change orientation: introduce an obstacle. Advantages: can have subjects do complicated paradigms, results can guide neurophysiological investigations. Disadvantages: inferring causality, need to validate tasks for future use. Temporal resolution: precision of a measurement with respect to time. Spatial resolution: precision of a measurement with respect to the size of the features that can be detected or distinguished. Continuous recording of brain activity (measures electric potential on scalp surface) Movement of ions inside, across, and outside neural cell membranes create electrical currents in excitable tissue. Electrical potentials created by these currents travel to scalp surface: event-related potentials (erp) What happens in the brain in response to an event.
