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Psych 101 week 4

by: Emy Cabera

Psych 101 week 4 01:830:101

Emy Cabera
GPA 3.8

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About this Document

These notes will cover exam 1 material as well as final.
General Pyschology
Prof. Persing
Class Notes
Intro to Psychology, Psychology, psych
25 ?




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This 3 page Class Notes was uploaded by Emy Cabera on Monday October 3, 2016. The Class Notes belongs to 01:830:101 at Rutgers University taught by Prof. Persing in Fall 2016. Since its upload, it has received 14 views. For similar materials see General Pyschology in Psychology (PSYC) at Rutgers University.

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Date Created: 10/03/16
Lecture 4 Hormones: Chemical substances, secreted by organs called glands, that affect the functioning of other organs. Endocrine Glands: Internal organs that produce hormones and release them into the bloodstream. The endocrine system is under the control of the nervous system. -The endocrine system is a system of glands that release hormones into the bloodstream. -Hormones are chemicals that affect mood, behavior and even anatomy. -Testosterone, ‘roids, the juice: Too much = mood/ aggression, baldness, sterile, enlarged nipples in men. To observe or see the brain: Electrical activity Electroencephalograph (EEG) Visualizing structure - Computer-assisted Tomography (CT scan) - Magnetic Resonance Imaging (MRI) • Visualizing function – Positron Emission Tomography (PET) – Functional Magnetic Resonance Imaging (fMRI) Brain Stem or Medulla:At the top of the spinal cord, consisting of medulla and pons – Medulla: Responsible for some automatic functions, such as breathing and heart rate – Pons: Involved in sleep, waking, and dreaming. – ReticularActivating System:An ascending network of neurons found in the core of the brain stem; it arouses the cortex and screens incoming information. Exam is after sensation and perception chapter Sensation and perception Sensation- The awareness of properties of an object or an event when a sensory receptor is stimulated The process of converting physical energy into electrochemical impulses in the nervous system = TRANSDUCTION. Perception- The act of organizing and interpreting sensory input as signaling a particular object or event. Absolute thresholds facts • Vision:Asingle candle flame from 30 miles on a dark, clear night • Hearing: The tick of a watch from 20 feet in total quiet • Smell: 1 drop of perfume in a 3-room apartment • Touch: The wing of a bee on your cheek, dropped from 1 cm • Taste: 1 tsp. Sugar in 2 gal. water • Sense Receptors: Specialized neurons that convert physical energy from the environment or the body into electrical energy that can be transmitted as nerve impulses to the brain. • Doctrine of Specific Nerve Energies: – Different sensory modes exist because signals received by the sense organs stimulate specific nerve pathways leading to specific areas of the brain. – Asensory organ will produce only one type of output regardless of the way it is stimulated!!!! • SensoryAdaptation: The reduction or disappearance of sensory responsiveness that occurs when stimulation is unchanging or repetitious. • Sensory Deprivation: The absence of normal levels of sensory stimulation. • Properties of light – Amplitude – Frequency – Wavelength • The visible spectrum • Visible light is a very small portion of the electromagnetic spectrum, from 400 to 700 nm. • Rods (100-120 million) – Very sensitive to light – Only register shades of gray • Cones (5-6 million) – Sensitive to particular wavelengths – Allow color vision Theres no cone in peripheral vision therefore you cant see color.


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