Psy Ch 3
Terms
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- How many portions of a brain are there?
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1 reptilian/inner portion
2 paleomammilian
3 neomamilian - What does reptilian portion of brain include?
- thalamus, hypothalamus, amygdale, pons, cerebellum
- What is reptilian portion of brain similar to and what functions does it perform?
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FOOD, SEX, TERITORYAppears to be similar to the brains found in reptiles in that controls mobility,
Pursuing and eating food, migrating, courting, reproduction, defending territory -
What is paleomamillian portion of brain?
What is it similar to? - 2cd layer of brain which is wrapped around reptilian in humans (and mammals like dogs, cats, rats etc.). First 2 structures make up the limbic system. This is responsible for our capacity to experience complex emotions, motivation, curiosity, and learning.
- What does neomamillian prtion of brain do?
- This is wrapped around the first 2 sections. Involved in uniquely human characteristics like planning, self aware, and language
- What is another name for neomamillian?
- Cerebral cortex?
- What are 2 hemispheres of brain called?
- L and R hemisphere
- What does l hemisphere of brain do?
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Responsible for comprehension and production of language
I.e. Brocas Area - What does r hemisphere of brain do?
- Responsible for visual perception and spatial understanding
- What are names of 4 lobes of brain?
- frontal, parietal, occiputal, temporal
- What does frontal lobe do?
- Responsible for associating or connecting certain types of behavior and motor fx *see example below with frontal lobotomy
- What does occipital lobe do?
- Involved in vision
- What is fx of temporal lobe?
- Hearing and speach
- What is fx of parietal lobe?
- Services other sensory systems: taste etc.
- How do we study the brain, what are 3 sources of info?
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1 pts who suffer head injury
2 brain surgery
3 pet scan - Who was Dr Moniz? When was he famous? What procedure did he perform?
- Prefrontal lobotomy done in 1930s to sever nerves that connect the frontal portion of cerebral cortex to thalamus
- Indic of prefrontal loboomy?
- Attempt to control uncontrollable violent behavior
- What were results of prefrontal lobotomy?
- Reduced ability to respond emotionally to stimuli or events. This led to the conclusion that frontal portion of cerebral cortex is involved in extreme expressions of emotion. Surmise that b/c person becomes vegetative Ω surmise that this portions fxs to register and process stimuli and immediate events.
- What are neurotransmitters and hormones?
- Chemicals in the brain that appear to influence behavior
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Why is it difficult to study nuerotransmitters?
What do we call knowledge we can obtain thru neurotransmitters? -
Only way to study is to obtain sample and b/c of diff in obtaining sample so study only those who are already having blood drawn for other procedures
Ω Knowledge obtained about chemicals and behavior is
correlation date. Problem is that it is diff to know which variable causes another variable
I.e. does ↑ testosterone cause ↑ aggression or other way around - What are the 3 sources of hormones?
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1 hypothalamus
2 gonads
3 adrenal cortex - What characteristics are correlated with incr testosterone?
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More conflicted relationships, ↑ drug use, ↑ # of sexual partners, ↑ violence
Ω concluded that testosterone influences aggression and sexual activity - Definition of behavioral genetics
- Science of psychology and biology. Examine both species specific behavior patterns, universal behavior patterns, and differences within a specific species
- Why do we do kinship studies
- Less direct manner to study genetic influence. The closer individuals are with respect to their genetic ancestry the more genes they share in common