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Psychology

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Sensation Notes

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absolute threshold The smallest magnitude of a stimulus that can be detected half the time. audition the sense of hearing. basilar membrane One of the membranes that separate the two tubes of the cochlea and on which the organ of Corti rests. basket cells Sensory receptor cells at the base of hairs that detect pressure. binocular cues Two visual cues that require both eyes to allow us to perceive depth. blind spot The spot where the optic nerve attaches to the retina, which contains no rods or cones. bone conduction hearing Hearing accomplished through sounds transmitted through the bones of the head directly to the cochlear fluid. ciliary muscle The muscle in the eye that controls the shape of the lens. cochlea

Twins

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Identical twins are nature’s own human clones, only they share the same conception, uterus and birthday. Twins can help us understand nature and nurture through observing separated identical twins or just through their behavior in general. “Curiously twinning rates vary by race. The rate among Caucasians is roughly twice that of Asians and half that of Africans … In Western countries most twins are fraternal, and fraternal twins are increasing with the use of fertility drugs.” (Meyers 97) Fraternal twins are just like siblings that share a uterus and a birthday.

Sense and Vision

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J Sensation is the detection and direct experience of physical energy as a result of environmental or internal events. Perception is the process by which sensory impulses are organized and interpreted. Our Sensational Senses J Sensation begins with the sense receptors, which convert the energy of a stimulus into electrical impulses that travel along nerves to the brain. Separate sensations can be accounted for by anatomical codes (as set forth by the doctrine of specific nerve energies) and functional codes in the nervous system. In a rare condition called synesthesia, sensation in one modality evokes a sensation in another modality, but these experiences are the exception, not the rule.

Sigmund Freud’s Psychoanalytic Theory - An Overview

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Sigmund Freud?s Psychoanalytic Theory Overview of Freud?s Life He was deathly afraid of the number 62 and would not book a room in a hotel with more than 62 rooms for fear of him getting the 62nd room. Freud had a penchant for rejecting people who did not totally agree with him. He was born in 1856 into a Jewish family At age 17 he moved to Vienna to study medicine at the University of Vienna

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