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Intro to Cognitive Neuroscience

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Intro to Cognitive Neuroscience Intro to Cognitive Neuroscience Cognition and the study thereof: An overview 1 Some definitions • Cognition - The acquisition, storage, transformation, and use of knowledge. • Neuroscience - Study of the structure and workings of the nervous system. • Cognitive neuroscience - Study of how cognitive processes can be Image courtesy of Euskalanato explained by the structure and function of the brain. 2 Cognitive Psychology • An approach to studying and explaining behavior that emphasizes mental processes and knowledge. • Often described as studying the “software” of the brain The Thinker, Auguste Rodin, 1889. Image courtesy of mharrsch. 3 Some history • Late 19th century, many psychologists worked by introspection Wilhelm Wundt, 1832 - 1920. “Father of psychology.” Image courtesy of Wikimeda Commons. • Early 20th century, move towards behaviorism - study of objective, observable phenomena. • Knowledge based in B. F. Skinner, 1904 - empirical data, rigorous 1990. Image courtesy of standards for definitions lauradahl. and experiment designs. 4 Some history • Growth of computers contributed to success of information- processing approach to cognition. • Respectable context for discussing mechanisms that produce behavior. (Like software!) Glen Beck and Betty Snyder program ENIAC, circa 1947 - 1955. Image courtesy of the U.S. Army. 5 And today? • Cognitive psychologists study • perception • learning • language • creativity • imagery • attention • decision-making • reasoning • meta-cognition. • Almost all psychologists say that mental representations are important in affecting behavior. 6 Three themes of cognition 1.Cognitive processes are active, not passive. 2.Cognitive processes are interconnected. 3.Most cognitive capabilities use both bottom-up and top- down processing. 7 Bottom-up vs. top-down • Bottom-up processing is stimulus-driven. • Top-down processing is expectation-driven. 8 MIT OpenCourseWare http://ocw.mit.edu Introduction to Cognitive Neuroscience Summer 2008 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms..
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