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Lecture

PSY100 - Jan 29

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Department
Psychology
Course
PSY100H1
Professor
Dan Dolderman
Semester
Winter

Description
th PSY100 January 29 2013 Bottom up processing and Top down processing The mind is what the brain does  The fact that our experience of the world relies intimately on the brain is shown in the bizarre perceptual experiences of patients with certain kinds of neurological damage or dysfunction. Ex. Oliver Sacks, The man who mistook his wife for a hat The split brain  The two hemispheres of the brain are actually two mini-brains connected by a bundle of fibers, the corpus callosum o for several decades until the 1960s, it was not uncommon to cut the corpus callosum to attempt to help people with epilepsy o The brain is a collection of brains that evolved over evolutionary time.  The left hemisphere deals with logic and thinking, also language production, the right hemisphere deals with emotion and spatial processing.  Left communicates with right, right communicates with the left side of the body  Left eye -> right brain, Right eye -> left brain  Corpus callosum transfer communication with both sides of the brain  The left brain is the “story teller”  Interdependence of cognition and emotion  Localization of function – when you try to do something, it require many parts of the brain to work together Where are you?  We are nowhere. It is the physical and sociocultural environments surrounding you, which continually create and reinforce patterns in your brain  AND within the brain, YOU arise because of the interconnectedness of many function subsystems. Just to think of the profound changes that happen when you know out a specific part. Neurological-perceptual problems  Blindsight o Spatial relationship in the back of your head, your visual field is represented in the back of your head. You lose part of your visual field if you damage the back of your head. Partial blindness. o 40+ different areas work to help give you vision in your brain th PSY100 January 29 2013 o Vision is not a unitary ability o In other words, more than one area of your brain works towards sight; damage to the occipital lobe (back area of the brain) doesn’t eliminate all elements of sight in the mind—other parts area still working too (e.g., the amygdale), hence, the occurrence of blindsight.  Phineas Gage o 1800s working on the railway, using dynamite, placing a charge exploding and shoots through his head. Before the accident he was the most efficient and capable foreman. Post-accident, he is fitful, indulging in the grossest of profanity, and IE, became a jerk.  The prefrontal cortex – the center of rationality o What makes us fundamentally human, deals with higher cognitive abilities. Integration of emotion and rationality. o Integrate – interdependent. o Considerable agreement in the literature of a functional lobe dissociation o Dorsal (towards the top of the brain) = Cognitive (reason, rationality.) o Ventral (lower down) = Affective*  Cognitive (Dorsal) o Maintaining attention o Mental flexibility o Abstract thinking o Feedback utilization o Inhibition of response  Affective o Control of behavior o Processing the reward and emotion o Social inhibition (impulse control) o Primary reinforces (food, sex, social affiliation) o If this area is damage  Social indiscriminate  Socially isolated  Difficulty initiating tasks  Impaired parenting  Blunted emotions  hyper sexuality  Uncreative  Low motivation th PSY100 January 29 2013 Emotion and Cognition  Emotion influences everyday “rational” decision making  Emotion and cognition are not separate  Emotional evaluation guides reasoning o Carbon tax vs. carbon offset  “Gut feelings”  Emotional and reason are separable Somatic Marker Hypothesis  Sensory information activates the VPFC  Causes autonomic arousal  Creates non-conscious bias that serves to facilitate cognitive (conscious) evaluation of the situation. Bechara et al. (1997)  OFC is important for emotional responding  Are emotional responses n
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