PSYCH 202 Lecture Notes - Lecture 1: Transcranial Magnetic Stimulation, Parasympathetic Nervous System, Phineas Gage
10 Feb 2018
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Document Summary
Diff. regions = diff. contributions to behavior. Diff. tasks use diff. regions: tools used to determine this, pet. Detects radioactively labelled substances (like radioactively labelled water, glucose, etc. ) Scanner detects where in the brain these substances go: fmri. More active areas consume nutrients from blood more rapidly than less active areas. A computer screen with buttons is made available to patient (in front of face). Patient is then asked to perform tasks: limitations of these tools: Poor temporal resolution (but good spatial resolution) No causal inference: when (activity is changing), principles, brain is made of billions of neurons. Each neuron send electrical signals: diff. tasks produce diff. changes in electric and magnetic fields, tools used to determine this, eeg. They produce very small electric fields, which add up. Can be detected even on the scalp (no need to shave hair off: meg. Similar to eeg but uses magnetic fields instead. Allows deeper penetration of signals: advantages of these tools:
