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18 Cards in this Set
- Front
- Back
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Psychophysics |
Behavioural response |
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Startle response |
Physiological response |
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Electrodermal activity (EDA) |
Physiological response - measuring emotional arousal & underlying brain functions through skin conductance |
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Acquired brain injury |
Damaging brain |
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Lesion studies |
Damaging the brain - remove or disable portions |
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Transcranial Direct Current Stimulation (tDCS) |
Small current between anode and cathode briefly disrupts activity |
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Anode |
Depolarised (more likely to fire: improves behavioural performance) |
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Cathode |
Hyperpolarised (less likely to fire: hinders behavioural performance) |
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Drug blocks |
Injection of anaesthetics - assess brain |
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Cryogenic block |
Cryoprobe cools neurons near tip so they stop firing |
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Transcranial Magnetic Stimulation (TMS) |
Single magnetic pulses to specific locations - magnetic activity causes neurons to fire (stimulation & disruption effects) |
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Repetitive Transcranial Magnetic Stimulation (rTMS) |
Repetitive magnetic pulses prior to task performance - magnetic activity causes neurons to fire (stimulation & disruption effects) |
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Magneto-encephalography (MEG) |
Electric current generates small magnetic fields - scalp |
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Electro-encephalography (EEG) |
Electrical activity generates electrical fields - scalp, event related potentials (ERPs) time lock to event, small signal embedded in noise (measures gross electrical activity) |
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Positron Emission Topography (PET) |
Radioactive -> glucose: shows activity |
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Magnetic Resonance Imaging (MRI) |
Magnetic - medical |
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Diffusion Tensor Imagining (DTI) |
Measures density & motion of water molecules - measures diffusion anisotropy |
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Functional Magnet Resonance Imaging (fMRI) |
Measures neural activity & BOLD (blood oxygen level dependant contrast) - active neurons = increased blood flow |
