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by: Akila Webb

PsychWeek3 PSYC 1101

Akila Webb

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About this Document

These notes cover topics discussed in class
Kristin Atchinson
Class Notes
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This 3 page Class Notes was uploaded by Akila Webb on Tuesday September 6, 2016. The Class Notes belongs to PSYC 1101 at Georgia State University taught by Kristin Atchinson in Fall 2016. Since its upload, it has received 15 views.


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Date Created: 09/06/16
Chapter 2: Biology of the Mind. The Nervous System  Cellular level  Development of the nervous system Cerebral Lobes  Occipital: visual information (visual cortex)  Parietal: information about touch (sensory cortex)  Temporal: hearing, language (auditory cortex)  Frontal: motor cortex, planning, judgement, memory, reasoning, abstract thinking Functions of the Cortex  Motor functions  Sensory functions  Sensory/ somatosensory cortex  Visual cortex  Auditory cortex  Association areas: communication between cortexes in all 4 lobes of the brain Cortex  Cerebral hemispheres  Corpus callosum: connects left and right hemispheres Hemisphere Specialization Left Hemisphere Right Hemisphere  Words/ letters  Geometric patterns  Language sounds (faces  Verbal memory  Non language/ sounds/  Speech music  Nonverbal memory Amygdala- emotions; anger Hypothalamus- hunger Cerebellum- balance use of both hands Brain Plasticity (Flexibility)  Genes: heredity; flexibility of the brain based of genome  Experience: changes in life are adjusted to use of the brain o Non enriched vs. enriched environments o Heavier and thicker cortexes, larger neurons with more dendrites, more synaptic connections  Brain damage  Compensation by other parts of the brain Types of Plasticity 1. Modifiability  Function/ structures can be attached  If you’re around it for a while you’re more familiar with it, but if your change environments then you lose familiarity.  Occurs early in life, and sensitive periods 2. Compensation  Cells substitute for others, enabling recovery  Deaf show activation of auditory cortex when presented w/ visual stimuli  Depends on age, timing and damage  If one area of the brain isn’t useful [ie: deaf or blind] another portion of the brain will compensate Brain Imaging Techniques {We learn about brain develop structure through accidents} 1. EEG: measures event potentials (ERP) measures neuronal activity through electrodes not useful for where the defect is, not special info for time, no images. Shows connections and communication 2. NIRS: (Near- Infrared Spectroscopy) measures blood flow in the brain as an indicator of function 3. CAT: combines a series of x-ray images taken from different angles and uses computer processing to create cross-sectional images. Looks just for structure, no use for function. 4. PET: (Positive Emission Topography) measures metabolic activity, info about function; drink radioactive fluid 5. MRI: (Magnetic Resonance Imaging)- uses a magnet to record changes in the oxygen level 6. fMRI: (Functional MRI) uses a magnet to record changes in the oxygen level, done while patient is active Functional Level: Electrical Activity Activity in living participants indicate:  changes: parallel behavior changes  surges in frontal lobe activity  measured by PET, EEG, fMRI


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