Michael Posner (psychologist)
Encyclopedia
Michael I. Posner is the editor of numerous cognitive
Cognitive neuroscience
Cognitive neuroscience is an academic field concerned with the scientific study of biological substrates underlying cognition, with a specific focus on the neural substrates of mental processes. It addresses the questions of how psychological/cognitive functions are produced by the brain...

 and neuroscience
Neuroscience
Neuroscience is the scientific study of the nervous system. Traditionally, neuroscience has been seen as a branch of biology. However, it is currently an interdisciplinary science that collaborates with other fields such as chemistry, computer science, engineering, linguistics, mathematics,...

 compilations and is an eminent researcher in the field of attention
Attention
Attention is the cognitive process of paying attention to one aspect of the environment while ignoring others. Attention is one of the most intensely studied topics within psychology and cognitive neuroscience....

. He is currently an emeritus professor of psychology
Psychology
Psychology is the study of the mind and behavior. Its immediate goal is to understand individuals and groups by both establishing general principles and researching specific cases. For many, the ultimate goal of psychology is to benefit society...

 at the University of Oregon
University of Oregon
-Colleges and schools:The University of Oregon is organized into eight schools and colleges—six professional schools and colleges, an Arts and Sciences College and an Honors College.- School of Architecture and Allied Arts :...

 (Department of Psychology, Institute of Cognitive and Decision Sciences) and an adjunct professor at the Weill Medical College in New York (Sackler Institute).

Posner studied the role of attention in high-level human tasks such as visual search
Visual search
Visual search is a type of perceptual task requiring attention that typically involves an active scan of the visual environment for a particular object or feature among other objects or features . Visual search can take place either with or without eye movements...

, reading, and number processing. More recently he investigated the development of attentional networks in infants and young children.

In Chronometric Explorations of Mind, published in 1976, Posner applied the subtractive method proposed 110 years earlier by Franciscus Donders
Franciscus Donders
-External links:* B. Theunissen. , F.C. Donders: turning refracting into science, @ History of science and scholarship in the Netherlands.* in the Virtual Laboratory of the Max Planck Institute for the History of Science* P. Eling, , Geneeskundige en fysioloog....

 to the study of several cognitive functions such as attention and memory. The subtractive method is based on the assumption that mental operations can be measured by decomposing complex cognitive tasks in sequences of simpler tasks. The method assumes that the effect of each mental operation is additive and that it is possible to isolate the effect of a single mental operation by comparing two tasks that differ only by the presence or absence of that mental operation. (See Mental chronometry
Mental chronometry
Mental chronometry is the use of response time in perceptual-motor tasks to infer the content, duration, and temporal sequencing of cognitive operations....

 for additional information on Donders' experiment.)

Posner applied the same subtractive principle to the study of attentional networks using PET (Positron Emission Tomography
Positron emission tomography
Positron emission tomography is nuclear medicine imaging technique that produces a three-dimensional image or picture of functional processes in the body. The system detects pairs of gamma rays emitted indirectly by a positron-emitting radionuclide , which is introduced into the body on a...

), a neuroimaging technique that produces three-dimensional functional maps of the brain. In Images of Mind, published with Marcus Raichle
Marcus Raichle
Marcus Raichle is a neurologist at the Washington University School of Medicine in Saint Louis. He is a professor in the Department of Radiology with joint appointments in Neurology, Neurobiology and Biomedical Engineering...

 in 1994, Posner investigated brain localization of cognitive functions by looking at the patterns of brain activation in progressively more complex cognitive tasks.Posner won the 2001 University of Louisville Grawemeyer Award for Psychology, along with Marcus Raichle and Steven Petersen.

The impact of Posner's theoretical and empirical contributions has been recognized through fellowship in the American Psychological Association
American Psychological Association
The American Psychological Association is the largest scientific and professional organization of psychologists in the United States. It is the world's largest association of psychologists with around 154,000 members including scientists, educators, clinicians, consultants and students. The APA...

, the Association for Psychological Science
Association for Psychological Science
The Association for Psychological Science , previously the American Psychological Society, is a non-profit international organization whose mission is to promote, protect, and advance the interests of scientifically oriented psychology in research, application, teaching, and the improvement of...

, the Society of Experimental Psychologists
Society of Experimental Psychologists
The Society of Experimental Psychologists , originally called the Society of Experimentalists, is an academic society for experimental psychologists. It was founded by Edward Bradford Titchener in 1904 to be an ongoing workshop in which members could visit labs, study apparatus, and hear and...

, the American Academy of Arts and Sciences
American Academy of Arts and Sciences
The American Academy of Arts and Sciences is an independent policy research center that conducts multidisciplinary studies of complex and emerging problems. The Academy’s elected members are leaders in the academic disciplines, the arts, business, and public affairs.James Bowdoin, John Adams, and...

, the American Association for the Advancement of Science
American Association for the Advancement of Science
The American Association for the Advancement of Science is an international non-profit organization with the stated goals of promoting cooperation among scientists, defending scientific freedom, encouraging scientific responsibility, and supporting scientific education and science outreach for the...

, and the National Academy of Sciences
United States National Academy of Sciences
The National Academy of Sciences is a corporation in the United States whose members serve pro bono as "advisers to the nation on science, engineering, and medicine." As a national academy, new members of the organization are elected annually by current members, based on their distinguished and...

. In 2009 Posner, a graduate of the University of Michigan
University of Michigan
The University of Michigan is a public research university located in Ann Arbor, Michigan in the United States. It is the state's oldest university and the flagship campus of the University of Michigan...

, was awarded the National Medal of Science
National Medal of Science
The National Medal of Science is an honor bestowed by the President of the United States to individuals in science and engineering who have made important contributions to the advancement of knowledge in the fields of behavioral and social sciences, biology, chemistry, engineering, mathematics and...

.

External links

Posner's website: http://www.neuro.uoregon.edu/ionmain/htdocs/faculty/posner.html
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK