Causes them to express light sensitive ion channels

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Unformatted text preview: tive ion channels Insert fibre-optic light to brain area, expose ion channels to particular wavelengths Change membrane potential only in the desired population of neurons Transcranial Magnetic Stimulation Changing electrical potential of cerebral cortex through application of a strong magnetic field Works by induction Magnetic coil allows relatively localized application of a field strong enough to induce electrical current in neurons Similar effects to direct electrical stimulation of cortex, but does not require surgery Neurochemical Methods Finding Neurons that Produce Particular Neurochemicals • Peptides (or proteins) – Can be localized directly using immunocytochemical methods Let’s take a closer look on the next slide. Localization of a Peptide Neurochemi...
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