PSYC101, Week 3, Biological Neuro/Brain 2
PSYC101, Week 3, Biological Neuro/Brain 2 PSYC 101
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This 3 page Class Notes was uploaded by Samantha Wammack on Thursday September 8, 2016. The Class Notes belongs to PSYC 101 at Boise State University taught by Brian Stone in Fall 2016. Since its upload, it has received 34 views. For similar materials see General Psychology in Psychology (PSYC) at Boise State University.
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Date Created: 09/08/16
Biological PSYC: Neuro/Brain 9-8-16 Brain Stem/cerebellum: Basic life functions such as breath, sleep, and basic movement. Limbic System: (emotions/drive/reward) o Amygdala: emotion/fear/rage o Hypothalamus: controls hormones, homeostasis o Hippocampus: new memories (think of a hippo coming onto campus…that will definitely create a new memory) Cerebral Cortex: complex stuff, higher thought, perception, skilled action. Made up of 4 lobes. Cerebral Cortex lobes: (each lobe has a left and right hemisphere) Occipital lobe: -vision Temporal Lobe: -hearing, language, categories Cerebral Processing -(located by the temple/ears) Parietal Lobe: -Spatial information • The right hemisphere controls/processes info -touch, body position from left half of the Frontal Lobe: -judgment, planning, personality body. • The left hemisphere -also voluntary movement controls/processes info from right side of body. v Left Occipital lobe processes what you see in the right vision field. v Right Parietal lobe processes being touched on left arm or leg. Motor Cortex: just a strip of the Frontal lobe that controls voluntary movement. Sensory Cortex (AKA…Somato Sensory Cortex): just a strip of the Parietal lobe that handles touch sensations. • The left and right hemispheres of each lobe do communicate signals across the Corpus Callosum so info on both sides integrates. Myths v “Are you left brained or right brained? ” o No. Myth. o An August 2013 study analyzed brain scans of over 1 ,000 people and they used both sides of the brain pretty equally. 2 o Some functions are processed heavier on one side (ex. Language on the left) but even for those activities the hemispheres communicate heavily (thanks to the Corpus Callosum). v “Do people only use 10% of the brain? ” o No. Myth. o Almost all regions of the brain have some activity pretty much constantly (even while sleeping). There is no unused region. o We can’t find any areas where damage has 0 effect, so it’s impossible that 90% is unused. Children’s Case Studies • Case study from 1975: o 5 ½ year old boy had bad seizures…left hemisphere removed. o By mid 20’s, had “superior language and intellectual abilities”. Completed college and attended grad school. • Recent case study: o 6-year-old has right half of brain removed § Left side of body becomes paralyzed…why the left? o In time and with lots of physical therapy, the remaining side of the brain was able to take over a lot of the functions and allo w a normal life. • Child’s brains are very “plastic”/flexible. How do we study the brain? Behavioral Neuroscience: record, alter or damage brain areas in animals to see what behaviors are affected. Cognitive Neuroscience: study brain damage in humans (what cognitive functions are affected), or scan the brain during cognitive tasks. o Ex. What brain areas are active during recall vs. recognition memory? Or seeing faces vs. seeing houses? 3
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