Social Neuroscience 400 Shariff

Social Neuroscience 400 Shariff - Social Neuroscience Iii...

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Unformatted text preview: Social Neuroscience Iii psy40 Topics What is social neuroscience? (15) Neuroimaging and TMS: Tools of SN (35) What is Social Neuroscience (SN)? Physics biology neuroscience Cognitive psychology Social psychology math sociology economics anthropology humanities ecosystems chemistry What is Social Neuroscience (SN)? SN: An interdisciplinary field that uses methodologies from both the neuro and social sciences to better understand the biological mechanism that underlie social processes and behaviour Holds that this multi-level analysis can enlighten both social psychology and neuroscience SN is a new field, Partly because the tools did not exist to appropriately study SN Partly because social psychology is messier than, say, cognitive. Therefore many neuroscientists ignored it, in order to simplify a dauntingly complex brain. What is Social Neuroscience (SN)? EEG (Electroencephelagram) How it works: Electrodes placed on the scalp record voltage differences between different parts of the brain Pros: High temporal resolution, Measures neuronal activity directly (via electrical output), Relatively easy to use. Cons: Limited to surface (cortical) activity Limited spatial resolution/anatomical specificity Pet (Positron emission tomography) How it works: A scanning device reads the positron emissions that are released as a previously injected sugar decays. Thus, it can assess the blood flow, oxygen and glucose consumption in different parts of the brain. Pros: Unlike EEG, offers 3D resolution Can measure several metabolic indicators Tracers can reveal neurotransmitter receptors/transporters Cons: Requires radioactive injections Radioactive half life means only short tasks can be measured Blood flow, oxygen and glucose consumption are all indirect correlates of brain activity MRI (magnetic resonance imaging) How it works: Uses magnetic fields and radio waves to produce high quality images by manipulating the spin of hydrogen protons Pros: No radioactive tracers needed High resolution imaging Can register water content, inflammation and bleeding Cons: Can only register structure, and not function f MRI ( functional magnetic resonance imaging) How it works: Adapts MRI to register the magnetic properties of oxygenated and deoxygenated hemoglobin , allowing real-time blood flow to be imaged Pros: Can see activation in addition to high res brain structures Scanners can be fitted to present stimuli Higher spatial and temporal resolution than PET...
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This note was uploaded on 10/14/2011 for the course PSYCH 100 taught by Professor X during the Spring '11 term at Fairfield.

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Social Neuroscience 400 Shariff - Social Neuroscience Iii...

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