Flashcards
Sem título
Flashcards do conjunto (22)
- 1Single unit and multiple unit electrophysiologyelectrical activity of individual neuron (places electrodes in the brain and measures adjacent neuron), and electrical activity of a group of neurons.
- 2Electroencephalographymeasures activity of a large group of neurons (EEG) measures differences in voltage
- 3Transcranial magnetic stimulation TMSuses coils and cortical neurons to depolarise and discharge action potentials. rTMS has long-lasting effects and reduces depression in the prefrontal cortex (causes seizures)
- 4Positron emission tomography (PET)radioactive isotopes that emit positron injected into the blood stream and distribute in metabolically active brain areas that use more energy. limited spatial resolution (where it happens) no temporal resolution (how)
- 5Functional Magnetic resonance imagingmeasures intensity of radio waves. Neural activity corresponds to blood flow. Magnetic field is measured in Tesla 1T - 10,000 G.
- 6By pulsing radio wavesinside the magnetic field it tilts the spin of the nucleus away from the magnetic field which relaxes.
MRI measures the differences in the rate nuclei relax - 7MRIstructure, poor spatial resolution. Measures rates of relaxation in different nuclei
- 8fMRIfunction (high spatial resolution) change in oxygen rich, and poor blood
- 9fMRI usesBOLD response, which increases oxyhaemoglobin blood (increases fMRI signal).
- 10T1white matter (strong), gray (medium), CSF (weak)
- 11T2white matter (weak), gray (medium), CSF (strong)
- 12white matterInsulated by myelin (neural signals travel faster)
- 13cerebellummovement coordination
- 14frontal lobemovement
- 15parietalsomatosensory
- 16occipital lobevision
- 17Temporal lobesound
- 18Doralsensory
- 19Ventralmotor
- 20occipital and parietal separated byparieto-occipital sulcus
- 21parietal and frontal separated bycentral suclus
- 22frontal and temporal separated bylateral / sylvian sulcus
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- FlashCards sobre Sem título, criado por lauradavies94 em 20-05-2014.
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- lauradavies94
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