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What does TMS stand for?
Transcranial Magnetic Stimulation is a technique which uses changing magnetic fields to induce a current in the brain and thereby disrupt ongoing electric activity.
Which of the following techniques are invasive? Click all those that apply.
Single cell recordings involve inserting an electrode into the brain and directly recording from a small number of neurons, however the name is a misnomer in that one is not recording from a single neuron but a population.
Positron Emission Tomography requires the subject to be injected with positrons, a form of anti-matter.
Both functional Magnetic Resonance Imaging and Electroencephalography are non-invasive in that they don't require any substances to be injected or inserted into the body.
What does fMRI (functional magnetic resonance imaging) measure? Click all those that apply.
fMRI measures the BOLD or Blood Oxygenated-Level Dependent signal. When neurons are active they require blood to bring them glucose and other necessary substances and the changing ratio of deoxygenated:oxygenated blood can be measured due to the different susceptibility of the deoxygenated vs. oxygenated blood to the magentic field.
Please click on the for feedback to each answer.