Notes from Lecture 8 - Personality and the Brain
Notes from Lecture 8 - Personality and the Brain Psych 115S
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This 2 page Class Notes was uploaded by Emme Notetaker on Tuesday August 4, 2015. The Class Notes belongs to Psych 115S at Stanford University taught by Yun Zhang, Natalie Colich in Spring 2015. Since its upload, it has received 132 views. For similar materials see Personality Psychology in Psychlogy at Stanford University.
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Date Created: 08/04/15
and the Brain GUEST LECTURE Matthew Sacchet 5th Year Neuroscience PhD Student neurons and the brain synapse gt gap where the dendrites and the axons meet neurotransmitters pass along messages that either excite or inhibit each other somas of the neurons make up grey matter the appendages axons make up the white matter brain gt four cortices gt frontal parietal temporal and occipital neuroscience methods levels of investigation gt can be studied at many different levels could study very small structures like neurons and cells could study how the neurons interact together in neural systems could study emotions and aspects of the mind could study how the brain is involved in different kinds of social interactions or behavior recent developments in science and math have allowed for us to be able to use new technology to study human neuroscience structural methods of studying gt anatomical architecture functional techniques gt how this anatomical architecture is related to neural activity a three dimensional pixel is called a voxel MRls take advantage of the fact that grey and white matter have different magnetic resonance properties functional MRI fMRl gt allows for the research of finding correlations between brain activity and behavior uses blood flow realtime fMRl conscious vs unconscious manipulation of brain activity positron emission tomography PET measures annihilation uses sensors placed around the brain to pick up the gamma rays that are released from the annihilation that occurs when a positron emitted from a radioactive molecule collides with an electron can make different kinds of molecules to become positronemitting can use different kinds of molecules to localize certain regions of the brain electroencephalography EEG uses electrodes to detect differences in electrical signals of the brain electrical signals produced by neurons magneto encephalography MEG detects the magnetic field changes produced by the neurons transcranial magnetic stimulation TMS uses a magnetic field to activate or inhibit neurons deep brain stimulation DBS gt an invasive human stimulation method used to transmit electrodes directly into the brain used only in certain circumstances since it is invasive bersonalitv and the brain most times correlations are used between personality traits and neural processes usually use selfreport questionnaires S data sometimes use behavioral data try to relate pieces of the Big Five to functions of the brain fMR used to see which regions of the brain may be correlated with each individual aspect of the Big Five extraversion neuroticism agreeableness conscientiousness and opennessintellect neurotransmitters released from the axon and sent to the dendrites of the other neuron brought together by the synapse dopamine a neurotransmitter may be related to openness low serotonin a neurotransmitter levels has been seen to be related to neuroticism more serotonin gt less anxietydepression
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