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Attendance Watch short video on TMS ◦ http://www.pbs.org/wgbh/nova/body/mind-control- TMS.html http://www.pbs.org/wgbh/nova/body/mind-control- TMS.html Brain movie and worksheet ◦ Go over worksheet questions from part 1 We’ll go over exam 2 tomorrow. They will be on Konnect by the end of the day Homework: No homework tonight.
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Attendance Notes on Neurons Start on your brain diagrams Homework: Complete #’s 10 and 11 in your review packets (Brain diagram and lobes of the brain)
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Central Nervous System ◦ Consists of the Spinal Cord and Brain – The major pathway and hub of nerves and information ◦ If sensory info doesn’t make it to the CNS than we cannot interpret the sense…blind spot example Peripheral Nervous System ◦ The smaller branches of nerves that reach out to other parts of the body
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Dendrite – Fibers that stick out from the cell body and receive messages from other neurons. Cell Body and Nucleus – Controls the firing of the neuron Axon – Long fiber that carries impulses away from the cell body & nucleus Myelin Sheath – fatty layer that insulates the axon and speeds the neuron message
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Axon Terminals – Branches at the end of axons that send impulses to other neurons Synapse – The gap between axon terminals and dendrites of different neurons. Neurotransmitters – Chemicals released by neurons that send messages to other neurons ◦ Epinephrine – increases heart rate, blood pressure, cardiac output, and metabolism ◦ Serotonin - involved in sleep, depression, memory and other processes
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Somatic – Parts of the nervous system that control voluntary activities like muscle movement or speaking Autonomic – Parts of the nervous system that control involuntary activities like your heartbeat, breathing and digestion.
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Sympathetic – Prepares the body for dealing with emergencies or strenuous/stressful situations. Parasympathetic – Works to conserve energy and recover from strenuous situations
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Right Brain/ Left Brain and discussion Complete #’s 10-14 in your notes including the brain diagram (use pages 160-163) Go over the dream journal assignment Homework: Start your dream journals and complete #s 10-14 in your notes.
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Attendance Finish our presentations: if there are any left Brief Notes Nature vs. Nurture short video clip ◦ http://www.youtube.com/watch?v=1gwnzW4jOMI http://www.youtube.com/watch?v=1gwnzW4jOMI Nature vs. Nurture reading and worksheet Homework: Dream Journals are due on Thursday!
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Attendance Right or Left Brained? Homework: No homework tonight
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1. Explain the meaning of “Nature vs. Nurture” and provide several examples to support each side of the debate. 2. Compare and contrast several aspects of the nervous system and the endocrine system
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15. The Endocrine System – The only other communication, besides the nervous system, for sending information to and from the brain. It is a system of glands that secrete hormones directly into the bloodstream. 16. Pituitary Gland – Known as the “master gland,” it communicates closely with the hypothalamus and secretes hormones that control the output of hormones by other glands.
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Hormones – Chemical messages secreted into the bloodstream by endocrine glands. Nature vs. Nurture – The argument between whether our personality and behavior is more attributed to our genetics or environmental factors. ◦ Nature = Genetics and Nurture = Environment
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Attendance Hand in dream journals: anyone want to share? Notes on Sensation and Perception concepts ◦ Visual illusions movie clip ◦ Awareness test movie Homework: Read the article titled “The secrets of sleep.” Answer the questions that go along with the article. These will be due tomorrow
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Essay question…difference between sensation and perception and give an example. Sensation – Detecting a stimulus through receptors. Stimulation is automatic. Perception – The organization of sensation into meaningful experience. ◦ Our interpretation of sensations ◦ Reflects learning, experience, & attitudes
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Absolute threshold ◦ Weakest amount of stimulus that can be sensed. Music example Difference threshold ◦ Min. amount of difference between two stimuli. Music Example Weber’s Law ◦ The larger or stronger a stimulus, the larger the change required for a person to notice a change in that stimulus.
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Carrying weights ◦ Who wants to be the guinea pig?
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Sensory adaptation ◦ A change over time in one’s responsiveness to a constant stimulus. ◦ Examples??? ◦ Background noise and a cold pool ◦ Why is sensory adaptation important? ◦ Autism and difficulties
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Sensation – Detecting a stimulus through receptors ◦ Stimulation is automatic Perception – The organization of sensation into meaningful experience. ◦ Our interpretation of sensations ◦ Reflects learning, experience, & attitudes
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Closure – Our ability to perceive a complete pattern or shape by filling in missing parts or gaps.
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Figure-Ground perception ◦ Discriminating between a figure and its background. What we perceive as the background influences our perception.
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Attendance Finish perception notes Notes on Consciousness and Sleep Homework: No homework
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Proximity ◦ Tendency to perceive things near to one another as a group
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Similarity – Grouping similar-looking objects together even when they are mingled with dissimilar objects. We do this with people too!
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Constancy ◦ The perception that something is unchanged even when its appearance has changed Color Constancy Shape Constancy Size Constancy
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Subliminal Perception ◦ Brief auditory or visual messages presented just below the absolute threshold ◦ Stimuli only affects the unconscious mind ◦ Hasn’t been proven with any degree of reliability, but it has remained a part of our common language
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Visual Illusions – Occur when sensory and perceptual signals are distorted, and our brains cannot correctly interpret space, size, and depth.
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http://www.huffingtonpost.com/2013/05/23 /10-optical-illusions-that-will-blow-your- mind_n_3307500.html http://www.huffingtonpost.com/2013/05/23 /10-optical-illusions-that-will-blow-your- mind_n_3307500.html
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Attendance and Happy Friday! Short visual illusions clip Notes on consciousness, sleep, and dreams Homework: Sleep article (period 7)
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Short visual illusions clip Awareness challenge ◦ http://www.youtube.com/watch?v=SyWBVFLGuhQ http://www.youtube.com/watch?v=SyWBVFLGuhQ
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Conscious – A state of awareness including feelings, sensations, ideas, and perceptions Preconscious – Memories, thoughts and stored knowledge that we aren’t currently utilizing Unconscious – Altered state of consciousness that includes selfish needs, immoral urges, fears, violent motives, shameful experiences, etc..
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Brain recovery from exhaustion & stress (recharge the batteries) Clear our minds of useless information Allow for the release of our unconscious mind
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Circadian rhythms – sleep wake cycle Stages of sleep – defined by brain wave ◦ Stage 1 – lightest sleep – 30 – 40 minutes ◦ Stage 2, 3, 4 – 90 minutes with increasingly erratic brain waves ◦ Stage 5 – REM sleep Irregular breathing, high blood pressure, heart beats faster, brain waves similar to awake Average about 5 cycles in 8 hours of sleep
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Unimportant & random firings of neurons? Way of releasing unneeded/unwanted memories? Release of the unconscious mind? ◦ A way to solve problems we encounter?
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Attendance Hand in your Sleep pamphlets Finish the movie (period 1) Go over the worksheet Have we completed our notes??? Homework: Study hard for your exam. We will review tomorrow and take the exam on Thursday.
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Brain recovery from exhaustion & stress (recharge the batteries) Clear our minds of useless information Allow for the release of our unconscious mind
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Circadian rhythms – sleep wake cycle Stages of sleep – defined by brain wave ◦ Stage 1 – lightest sleep – 30 – 40 minutes ◦ Stage 2, 3, 4 – 90 minutes with increasingly erratic brain waves ◦ Stage 5 – REM sleep Irregular breathing, high blood pressure, heart beats faster, brain waves similar to awake Average about 5 cycles in 8 hours of sleep
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