resembles an afterimage from staring at a bright light‚ but it represents changes in orientation perception rather than in color or brightness. Most modem explanations of the MTAE are loosely based on the feature-detector model of the primary visual cortex (V1)‚ which characterizes this area as a set of orientation-detecting neurons. Experiments showed that these neurons became more difficult to excite: repeated presentation of oriented visual stimuli‚ and the desensitization persisted for some time
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Yakima Bagby Altered State of Consciousness: How Drugs Alter Consciousness An altered state of consciousness may be defined as a short-term change in the general configuration of one’s individual experience‚ such that one believing that their rational functioning is clearly altered from certain overall norms of their usual state of consciousness. (Revonsuo‚ A.‚ Kallio‚ S.‚ & Sikka‚ P. 2009) There are many ways that one’s consciousness can be altered and drug use is one of them. Psychoactive
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participants ability to transfer messages from the cerebral hemispheres to the neural mechanisms. Materials The experiment measured participants response to stimulus‚ determining whether the cerebral hemispheres can communicate. Each test consisted of materials (a) the screen‚ and (b) the object. Being shown a word in either visual field tested the participants capability to process the visual stimulus‚ and share information between the cerebral hemispheres. Procedure Participants were positioned
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The limbic system and prefrontal cortex play an extensive role in human behavior. The limbic system is a set of structures within the brain that controls human emotions and memories; intensifying during puberty. On the other hand‚ the prefrontal cortex is responsible for regulating behavior and thought analysis. This is developed later than the limbic system which has already begun developing during puberty as stated earlier. Due to the differences in developmental time‚ the extremities such as‚
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Schouten‚ J.L.‚ Pietrini‚ P.‚ 2001 Sep 28. Kamitani‚ Y.‚ Tong‚ F.‚ 2005 May. Decoding the visual and subjective contents of the human brain Kanwisher‚ N.‚ McDermott‚ J.‚ Chun‚ M.M.‚ 1997 Jun 1. The fusiform face area: a module in human extrastriate cortex specialized for face perception Kriegeskorte‚ N.‚ Cusack‚ R.‚ Bandettini‚ P.‚ 2010 Feb 1. How does an fMRI voxel sample the neuronal activity pattern: compact-kernel or complex spatiotemporal filter? Neuroimage. 49 (3)‚ 1965–1976 Epub 2009 Oct 1. Moutoussis
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R. Grace Webb PSYC 1030-W88 March 10th‚ 2013 The Teenage Brain: A Continuous Mystery Everyone knows and remembers their tough teenage years. For some‚ it was the best time of their life; for others‚ the memories are the opposite. What is even more challenging than being a teenager yourself‚ is living with one. It is as if it happens over night; a happy‚ fun-loving child becomes a dramatic‚ chaotic pre-teen. In PBS Frontline’s “Inside the Teenage Brain”‚ some of the mysteries involving why and
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Mary Deming PSY 365 4/20/12 Empathy and Pro-social Behavior. In the article‚ “Empathy and Pro-Social Behavior in Rats‚” Inbal Ben-Ami Bartal‚ Jean Decety‚ and Peggy Mason conclude the experiment and findings of their study about whether rats exude pro-social behavior due to empathy. Housing pairs of rats for 2 weeks‚ one pair of rats was trapped in a container that could only be opened from the outside. In an unfamiliar situation‚ unlocking the cage to liberate the caged rat requires
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DEM 203 1.1 Dementia is a chronic progressive disease of the brain. It is characterized by a decrease in all higher cognitive functions such as memory‚ thinking‚ judgment‚ orientation‚ comprehension‚ data processing‚ the ability to learn and express themselves. Accompanied by changes in emotional: anxiety‚ irritability‚ personality changes‚ loss of self-esteem‚ depression‚ emotional fluctuations‚ reducing the amount of expressed emotions‚ lower the intensity of
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Explain one study related to localization of function in the brain (Sperry) Command Term: Explain reasons or causes. Localization of function refers to the belief that specific areas of the cerebral cortex are associated with specific physical or behavioral functions. Examples of case studies to prove how specific locations of the brain can be affected and have an impact on behavior are demonstrated by the HM and Phineas Gage incident. In 1848‚ when Phineas Gage was tampering iron to press
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Addicts‚ the most common finding in this group is low activity in the prefrontal cortex‚ likely due to low levels of dopamine. The PFC is involved in judgment‚ impulse control‚ planning‚ follow through‚ decision making‚ and paying attention. This type is often seen with ADD and ADHD and is more common in males. Type Three is Impulsive-Compulsive Addicts SPECT scans here tend to show low activity in the prefrontal cortex‚ likely due to low dopamine and too much activity in the anterior cingulate gyrus
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