PSYC20006 Lecture Notes - Fall 2017 Lecture 4 - Multiple comparisons problem, Ferromagnetism, Null result
20 Sep 2018
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Learning outcome: general background fmri functional magnetic resonance imaging. Images the functioning of the human brain: but pet requires the administration of a radioactive isotope (eg. oxygen-15) to the patient; exposes. Previously done using positron emission tomography (pet) patient to a significant amount of ionizing radiation fmri does not involve radiation and hence is more commonly used in research settings: basic principles. Formerly known was nuclear magnetic resonance imaging (nmri: vs. mri, which images the structure of the brain. Frequency of precession = resonance frequency of the proton: precession frequency of the proton depends on the strength of the magnetic field, coherent signals -> sum together to produce a large net signal. Learning outcome: mechanisms of scanning: only excite one part of the human brain at any point in time in order to track the brain area that signals originate from. Bold fmri responses to the two events will become confused.
