Session 3 - Life Sci 2C03 Session 3 Session 3 Investigation...

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Life Sci 2C03 – Session 3 Session 3 : Investigation the Nervous System – Electrophysiological Methods Dimensions of Investigations 1. Invasive and Non-invasive: 1. Invasive technique involves physical or chemical distortion of nervous tissue 1. E.g electrode or chemical substance is introduced into brain 1. Non- invasive – EEG – on top of brain 1. Spatial and Temporal Resolutions: 1. Spatial – representation in space or different locations 1. Look at different areas in a given time period 1. Temporal – representation in time 1. In vivo and in vitro: 1. In vivo – in an intact preparation (live animal) 2. In vitro – in an isolated preparation (e.g. brain slice) 1. Macro-investigation vs. Micro/Reductionist 1. Macro – big picture (EEG) – whole brain 2. Micro – small area of brain (electrode in brain) Investigating the Brain Processes 1. Electrophysiological Methods 1. Methods of Investigation: 1. Electroencephalogram (EEG) 1. Magnetoencephlaogram (MEG) 1. Electrocorticogram(ECog) – surface of cortex
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Session 3 - Life Sci 2C03 Session 3 Session 3 Investigation...

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