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29 Cards in this Set

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1. Behavior Genetics
interested in the degree to which psychological characteristics transmit from parent to child
Proximate Causes
Ultimate causes
p: how a behavior is generated
u: why these behaviors are generated
Genes (sex-linked)
Chromosomes
genes are segments of DNA
sex-linked: characteristics/disorders linked to 23rd chr.
Chromosomes:where genes are stored/transferred
dizygotic twins
monozygotic twins
fraternal twins: develop from different eggs, genetically equated to other siblings
Mono twins: identical tiwns whose makeup is 100% the same
polygenic traits
traits that are made up of more than just 1 trait
Hidden Estrus
biological trait by which males unable to detect fertile cycles
shows sex used for enjoyment purposes as well
Last Major Transition (cranial capacity)
size of brain increases
mating preferences
sexual dimorphism
m: find female that is most fertile
f: find male that is most resourceful, can support
both use tactics to achieve
s.d.: one sex dwarfing over the other in size (m--f, but deminishing)
coalitions:
darwinian evolution
us vs. them talk (groups)
variation & selection
cognitive nitch
our brains separate us from other species
jealousy
women: worried about emotional fidelity
men: worried about physical fidelity
Central Nervous System
Peripheral n.s.
somantic - autonomic
cns-nerves in brain & spinal cord
pns-brain/spinal to rest of body
somantic: takes message from sensory receptors on muscles/body surfaces
autonomic: from glands and internal organs
central core brain structures:
medulla:
cerebellum:
thalamus
hypothalamus
reticular formation
parts of limbic system
hippocampus: momory
amygdala: emotions such as fear
parts of cerebrum
cerebral cortex: outer layer of cerebrum
corpus callosum: connecting mass b/w left and right hemispheres
brain lobes & areas
frontal-front--primary motor area
parietal-top & rear--primary somatosensory area
temporal-bottom--primary auditory area
occipital-rear of brain--primary visual area
Other areas
Association Areas: areas of cerebral cortex not directly concerned with sensory or motor processes
Broca's Area:region in FRONTAL LOBE involved in speech production
Wernicke's Area:region in TEMPORAL LOBE involved with understanding of language
split brain research
with corpus callosum severed, right and left brain oblivious of each other
medulla & cerebellum
medulla: controls breathings and upright posture
cerebellum: movement & motor learning
thalamus
hypothalamus
reticular formation
thalamus: sleep and wakefulness
hypothalamus: eat, drink, sex, homeostasis
reticular formation: arousal & attention
Right vs Left brain
Right brain: unable to produce language
highly developed spatial and pattern sense

left brain: unable to comprehend language
aphasia
language deficits caused by brain damage
autonomic nervous system
sympathetic & parasympathetic systems
sympathetic system
active during times of intense arousal

works all at once
parasympathetic system
active during regular times
-store up energy for sympathetic system

works on individual organ basis
endocrine system
secretes hormones through PITUITARY and then hypothalamus
Functional Modularity
different functions of the body are distributed throughout the brain
Structural Modularity
different functions of the body equated to different areas of the brain
Hemi-neglect
Ability to neglect a portion or half of one's brain through training