The Electrophysiological Brain

The Electrophysiological Brain - The Electrophysiological...

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The Electrophysiological brain o To what extent can we tell what someone is thinking by monitoring momentary changes in their brain? Type of object, location? Specific person/object? Are they lying? o What do techniques such as single-unit recordings, EEG, MEG, and fMRI actually measure? The Active brain o Cognitive activity is associated with increased and decreased activity of neurons Mental representation: how external properties are simulated by cognition Neural representation: How neurons code the external stimuli (e.g., different spike rates) o Neurons performing similar functions tend to cluster together (functional specialization) Permits use of non-invasive techniques o Neural activity generates electrical signals Neuronal spike rates are measured by electrophysiological techniques Space versus time o Determine levels of following variables when choosing modality Invasiveness Spatial resolution Temporal resolution o
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This note was uploaded on 01/24/2012 for the course PSYC 4100 taught by Professor Unsworth during the Spring '09 term at University of Georgia Athens.

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The Electrophysiological Brain - The Electrophysiological...

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