PSY100H1 Chapter Notes - Chapter 3.4: Transcranial Magnetic Stimulation, Diffusion Mri, Magnetic Resonance Imaging
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PSY100H1 Full Course Notes
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Lesioning: researchers intentionally damage an area of an animal"s brain: isolate single brain structures, sham group = the control. Structural neuroimaging: brain scanning that produces images of different brain structures: measures size of different brain areas detect brain injury. Functional neuroimaging: brain scanning that provides info about which brain regions are active during behaviours trade off b/w neuroimaging techniques- temporal resolution (how brief a period of time can be accurately measured) & spatial resolution (clear brain picture) Not super accurate- the skull disrupts accuracy of measurements. Magnetoencephalography (meg): measures tiny magnetic fields created by nerve activity [when] Functional magnetic resonance imaging (fmri): measures brain activity by detecting influx of oxygen-rich blood into neural areas that were just active. Excellent temporal resolution (measures activity at millisecond level) Excellent special resolution (clear images of brain structures) Poor spatial resolution (no picture of individual brain structures. Very poor temporal resolution (2 min to scan the brain)
