J. A. Scott Kelso
Encyclopedia
J. A. Scott Kelso is a neuroscientist
Neuroscientist
A neuroscientist is an individual who studies the scientific field of neuroscience or any of its related sub-fields...

, and Professor of Complex Systems
Complex systems
Complex systems present problems in mathematical modelling.The equations from which complex system models are developed generally derive from statistical physics, information theory and non-linear dynamics, and represent organized but unpredictable behaviors of systems of nature that are considered...

 and Brain Sciences, 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...

, Biological Sciences and Biomedical Science at Florida Atlantic University
Florida Atlantic University
Florida Atlantic University, also referred to as FAU or Florida Atlantic, is a public, coeducational, research university located in , United States. The university has six satellite campuses located in the Florida cities of Dania Beach, Davie, Fort Lauderdale, Jupiter, Port St. Lucie, and in Fort...

 (FAU) in Boca Raton, Florida and The University of Ulster (Magee Campus) in Derry, N. Ireland.

Kelso has worked on coordination dynamics
Metastability in the brain
In the field of computational neuroscience, the theory of metastability refers to the human brain’s ability to integrate several functional parts and to produce neural oscillations in a cooperative and coordinated manner, providing the basis for conscious activity.Metastability, a state in which...

, the science of coordination and on fundamental mechanisms underlying voluntary movements and their relation to the large-scale coordination dynamics of the human brain.

His experimental research in the late 70's and early 80's led to the HKB model (Haken
Hermann Haken
Hermann Haken is physicist and professor emeritus in theoretical physics at the University of Stuttgart. He is known as the founder of synergetics....

–Kelso–Bunz), a mathematical formulation that quantitatively describes and predicts how elementary forms of coordinated behavior arise and change adaptively as a result of nonlinear interactions among components.

Biography

Kelso was born in the city of Derry
Derry
Derry or Londonderry is the second-biggest city in Northern Ireland and the fourth-biggest city on the island of Ireland. The name Derry is an anglicisation of the Irish name Doire or Doire Cholmcille meaning "oak-wood of Colmcille"...

, Northern Ireland
Northern Ireland
Northern Ireland is one of the four countries of the United Kingdom. Situated in the north-east of the island of Ireland, it shares a border with the Republic of Ireland to the south and west...

. He attended Foyle College (1958–1965), receiving his undergraduate education at Stranmillis University College
Stranmillis University College
Stranmillis University College is a university college of Queen's University Belfast. The institution is located on the Stranmillis Road in Belfast, and has approximately 700 students today and offers the BEd, PGCE and TESOL, as well as other courses....

 Belfast
Belfast
Belfast is the capital of and largest city in Northern Ireland. By population, it is the 14th biggest city in the United Kingdom and second biggest on the island of Ireland . It is the seat of the devolved government and legislative Northern Ireland Assembly...

 from 1965 to 1969, and the University of Calgary
University of Calgary
The University of Calgary is a public research university located in Calgary, Alberta, Canada. Founded in 1966 the U of C is composed of 14 faculties and more than 85 research institutes and centres.More than 25,000 undergraduate and 5,500 graduate students are currently...

, Alberta from 1971 to 1972. He obtained his PhD
PHD
PHD may refer to:*Ph.D., a doctorate of philosophy*Ph.D. , a 1980s British group*PHD finger, a protein sequence*PHD Mountain Software, an outdoor clothing and equipment company*PhD Docbook renderer, an XML renderer...

 from the University of Wisconsin, Madison in 1975.

From 1976 to 1978 Kelso was Assistant Professor and Director of The Motor Behavior
Somatic nervous system
The somatic nervous system is the part of the peripheral nervous system associated with the voluntary control of body movements via skeletal muscles...

 Laboratory at the University of Iowa
University of Iowa
The University of Iowa is a public state-supported research university located in Iowa City, Iowa, United States. It is the oldest public university in the state. The university is organized into eleven colleges granting undergraduate, graduate, and professional degrees...

. Between 1978 and 1985 he was Senior Research Scientist at Yale University's Haskins Laboratories
Haskins Laboratories
Haskins Laboratories is an independent, international, multidisciplinary community of researchers conducting basic research on spoken and written language. Founded in 1935 and located in New Haven, Connecticut since 1970, Haskins Laboratories is a private, non-profit research institute with a...

 in New Haven, Connecticut
New Haven, Connecticut
New Haven is the second-largest city in Connecticut and the sixth-largest in New England. According to the 2010 Census, New Haven's population increased by 5.0% between 2000 and 2010, a rate higher than that of the State of Connecticut, and higher than that of the state's five largest cities, and...

 and Professor of Psychology and Biobehavioral Sciences (Unit of Behavioral Genetics
Behavioural genetics
Quantitative human behavioural genetics is a specialisation in the biological field of behaviour genetics that studies the role of genetics in human behaviour employing quantitative-genetic methods. The field is an overlap of quantitative genetics and psychology...

) at the University of Connecticut
University of Connecticut
The admission rate to the University of Connecticut is about 50% and has been steadily decreasing, with about 28,000 prospective students applying for admission to the freshman class in recent years. Approximately 40,000 prospective students tour the main campus in Storrs annually...

.

In 1985 he founded the Center for Complex Systems and Brain Sciences
Center for Complex Systems and Brain Sciences
The Center for Complex Systems and Brain Sciences is a multi-disciplinary research institute, internationally active in the fields of complexity science and neuroscience. The center is located in the Charles E. Schmidt College of Science, Florida. This center was founded by J. A...

 at Florida Atlantic University, an interdisciplinary research center that includes neuroscientists, applied mathematicians, physicists, psychologists and computer scientists housed in the same physical facility, working together on common problems of complex, biological systems ranging from molecules to minds. Kelso leads a team of researchers in the Center's Human Brain and Behavior Laboratory.

Since 1985, Kelso has held the Glenwood and Martha Creech Eminent Scholar Chair
Chair (official)
The chairman is the highest officer of an organized group such as a board, committee, or deliberative assembly. The person holding the office is typically elected or appointed by the members of the group. The chairman presides over meetings of the assembled group and conducts its business in an...

 in Science at Florida Atlantic University, where he is also 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...

, Biological Sciences
Biology
Biology is a natural science concerned with the study of life and living organisms, including their structure, function, growth, origin, evolution, distribution, and taxonomy. Biology is a vast subject containing many subdivisions, topics, and disciplines...

, and Biomedical Sciences. Kelso was Program Director of the NIMH
National Institute of Mental Health
The National Institute of Mental Health is one of 27 institutes and centers that make up the National Institutes of Health...

’s National Training Program in Complex Systems and Brain Sciences at Florida Atlantic University between 1987 and 2005. Working with the FAU Administration and the Chancellor's office of the State University System, Kelso helped establish the Center's PhD Degree in Complex Systems and Brain Sciences.

In 1995, Kelso co-directed the Summer School in Complex Systems at the Santa Fe Institute
Santa Fe Institute
The Santa Fe Institute is an independent, nonprofit theoretical research institute located in Santa Fe and dedicated to the multidisciplinary study of the fundamental principles of complex adaptive systems, including physical, computational, biological, and social systems.The Institute houses a...

. He served as President of the South Florida Chapter of Sigma Xi
Sigma Xi
Sigma Xi: The Scientific Research Society is a non-profit honor society which was founded in 1886 at Cornell University by a junior faculty member and a handful of graduate students. Members elect others on the basis of their research achievements or potential...

, the Scientific Research Society, from 1995-1999. He is a Member of the Scientific Board of the Plexus Institute, the World Council of the Einstein Institutes and the Advisory Board of the Intelligent Systems Research Center at the University of Ulster Magee Campus.

Kelso has held visiting professorships in France, Germany, Russia and (currently) Ireland. He has also lectured extensively in the U.S.A. and abroad. He has received many honors and awards for his scientific research. In 2007, he was named Pierre de Fermat Laureate.

Work

The objective of Kelso's research is to understand how human beings (and human brain
Human brain
The human brain has the same general structure as the brains of other mammals, but is over three times larger than the brain of a typical mammal with an equivalent body size. Estimates for the number of neurons in the human brain range from 80 to 120 billion...

s — singly and together) coordinate behavior. Kelso and his research team currently use non-invasive neuroimaging
Neuroimaging
Neuroimaging includes the use of various techniques to either directly or indirectly image the structure, function/pharmacology of the brain...

 techniques (EEG
Electroencephalography
Electroencephalography is the recording of electrical activity along the scalp. EEG measures voltage fluctuations resulting from ionic current flows within the neurons of the brain...

, MEG
Magnetoencephalography
Magnetoencephalography is a technique for mapping brain activity by recording magnetic fields produced by electrical currents occurring naturally in the brain, using arrays of SQUIDs...

, fMRI
Functional magnetic resonance imaging
Functional magnetic resonance imaging or functional MRI is a type of specialized MRI scan used to measure the hemodynamic response related to neural activity in the brain or spinal cord of humans or other animals. It is one of the most recently developed forms of neuroimaging...

, PET
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...

, etc.) and statistical
Statistics
Statistics is the study of the collection, organization, analysis, and interpretation of data. It deals with all aspects of this, including the planning of data collection in terms of the design of surveys and experiments....

 tools to gather information about the structure and function of the brain during real-time behavior.

Over the last 30 years or so, along with colleagues working in laboratories around the world, he has participated in an interdisciplinary science called coordination dynamics
Metastability in the brain
In the field of computational neuroscience, the theory of metastability refers to the human brain’s ability to integrate several functional parts and to produce neural oscillations in a cooperative and coordinated manner, providing the basis for conscious activity.Metastability, a state in which...

. Coordination dynamics is an empirical and conceptual framework that tries to explain how patterns of coordination form, persist, adapt and change. The insights of coordination dynamics have been applied to predict behavior in different kinds of systems at different levels of analysis.

Coordination dynamics is grounded in the concepts of synergetics and the mathematical tools of dynamical systems (see nonlinear dynamic systems theory
Dynamical system
A dynamical system is a concept in mathematics where a fixed rule describes the time dependence of a point in a geometrical space. Examples include the mathematical models that describe the swinging of a clock pendulum, the flow of water in a pipe, and the number of fish each springtime in a...

 and synergetics
Synergetics
Synergetics is an interdisciplinary science explaining the formation and self-organization of patterns and structures in open systems far from thermodynamic equilibrium. It is founded by Hermann Haken, inspired by the laser theory....

). But coordination dynamics seeks to model specific properties of human cognition
Cognition
In science, cognition refers to mental processes. These processes include attention, remembering, producing and understanding language, solving problems, and making decisions. Cognition is studied in various disciplines such as psychology, philosophy, linguistics, and computer science...

, neurophysiology
Neurophysiology
Neurophysiology is a part of physiology. Neurophysiology is the study of nervous system function...

, and social function
Social
The term social refers to a characteristic of living organisms...

 - such as anticipation, intention, attention, decision-making and learning. The principal claim of coordination dynamics is that the coordination of neuron
Neuron
A neuron is an electrically excitable cell that processes and transmits information by electrical and chemical signaling. Chemical signaling occurs via synapses, specialized connections with other cells. Neurons connect to each other to form networks. Neurons are the core components of the nervous...

s in the brain and the coordinated actions of people and animals are linked by virtue of sharing a common mathematical or dynamical structure.

Kelso has worked on metastability
Metastability
Metastability describes the extended duration of certain equilibria acquired by complex systems when leaving their most stable state after an external action....

 in 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,...

. This concept has seen a growing interest among theoretical and computational neuroscientists, since it provides a mathematical formalization for the idea that the individual parts of the brain can on the one hand be specialized and segregated yet on the other hand function as an integrated whole.

Early Work

Kelso's early work used nerve block techniques to cut off sensory input from the limbs in humans. His experiments showed that even without conscious awareness of limb position, humans could move accurately to desired locations in space. Along with work conducted by Polit and Bizzi on monkeys at MIT Kelso's research was a key to helping establish the equilibrium point theory of motor control originally postulated by Anatol Feldman. Then, working with his students David Goodman and Dan Southard he demonstrated—using a pulsed light emitting diode technique long before the age of sophisticated computer assisted motion analysis—that the brain controls the complex, coordinated movements of the upper limbs by exploiting functional synergies, a notion originally put forth by the Russian physiologist and cybernetician Nicolai Bernstein. Further work at Haskins Labs using a combination of novel perturbation techniques, kinematic and intramuscular recordings discovered that the control and coordination of complex speech gestures was also based on functional synergies or coordination structures. In asking how synergies might be formed in motor systems Kelso turned from Sherringtonian neurophysiology to theories of self-organization in particular the fledgling interdisciplinary field of synergetics founded by Hermann Haken. At that time, the dominant understanding of animated movement was that behavior is determined by a "central program", a prearranged set of instructions that prescribe how a set of biomechanical components should behave. In contrast, Kelso showed experimentally that behavior can also emerge in a self-organizing way, as a result of highly nonlinear interactions among many interconnected elements. His experiments were the first to demonstrate the existence of phase transitions—sudden and spontaneous shifts from one coordinated state to another as a parameter is continuously varied. Phase transitions are a basic mechanism of self-organization in nature and Kelso's experiments, which have been replicated many times, were the first to show them in the coordinated movements of human beings.

HKB model

Kelso and his colleagues later demonstrated that many of the complexities of coordinated motor
Motor coordination
thumb|right|Motor coordination is shown in this animated sequence by [[Eadweard Muybridge]] of himself throwing a diskMotor coordination is the combination of body movements created with the kinematic and kinetic parameters that result in intended actions. Such movements usually smoothly and...

 behavior in complex, multi-degree-of-freedom systems can be derived from relatively simple, but nonlinear mathematical laws. For a review of this work see Kelso et al. (1987) and Schöner and Kelso (1988) In particular, Kelso developed a mathematical model in collaboration with the eminent theoretical physicist
Theoretical physics
Theoretical physics is a branch of physics which employs mathematical models and abstractions of physics to rationalize, explain and predict natural phenomena...

 Hermann Haken
Hermann Haken
Hermann Haken is physicist and professor emeritus in theoretical physics at the University of Stuttgart. He is known as the founder of synergetics....

, the father of laser
Laser
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of photons. The term "laser" originated as an acronym for Light Amplification by Stimulated Emission of Radiation...

 theory and synergetics
Synergetics
Synergetics is an interdisciplinary science explaining the formation and self-organization of patterns and structures in open systems far from thermodynamic equilibrium. It is founded by Hermann Haken, inspired by the laser theory....

. This "HKB model" was able to derive basic forms of coordination observed in Kelso's experiments using a system of nonlinear relations
Dynamical system
A dynamical system is a concept in mathematics where a fixed rule describes the time dependence of a point in a geometrical space. Examples include the mathematical models that describe the swinging of a clock pendulum, the flow of water in a pipe, and the number of fish each springtime in a...

 between individual coordinating elements The HKB model explained and predicted experimental observations such as "critical slowing down", and "enhanced fluctuations" associated with instability and dramatic changes in coordination. Later extensions of HKB accommodated the effects of noise, broken symmetry, multiple interacting heterogeneous components, recruitment-annihilation processes, parametric stabilization, and the role of changing environments on coordination

Brain Imaging Work

Subsequently, Kelso and his colleagues moved from the hand to the brain, using large arrays of SQUID
SQUID
A SQUID is a very sensitive magnetometer used to measure extremely weak magnetic fields, based on superconducting loops containing Josephson junctions....

 magnetometers to record the neuromagnetic activity of the brain
Magnetoencephalography
Magnetoencephalography is a technique for mapping brain activity by recording magnetic fields produced by electrical currents occurring naturally in the brain, using arrays of SQUIDs...

 and Functional Magnetic Resonance Imaging
Functional magnetic resonance imaging
Functional magnetic resonance imaging or functional MRI is a type of specialized MRI scan used to measure the hemodynamic response related to neural activity in the brain or spinal cord of humans or other animals. It is one of the most recently developed forms of neuroimaging...

 to record BOLD (Blood Oxygen Level Dependent) activation in brain regions. This work showed that mathematical forms observable in the coordinated movement of the hands (such as phase transitions), were also observable in images of brain activity. Or as Kelso puts it, "the same coordination dynamics governs brain activity and human behavior." For example, on the basis of recordings and analysis of human brain activity Viktor Jirsa and Armin Fuchs along with Kelso were able to derive the HKB equations of coordination at the behavioral level from a more realistic anatomical and physiological model of the underlying neural substrate

Current research

Kelso’s current work focuses on whether the same principles and mechanisms of coordination dynamics apply also to human brains working together in social settings. Using large electrode arrays now available in the field of electroencephalography (EEG), he and his co-workers have been imaging the brains of pairs of humans, as they perform coordinated hand movements. Remarkably, Kelso's team has identified signatures in the brain that correspond to whether humans coordinate together or act independently. In another line of research, Kelso and colleagues have created a novel way to understand the real time interaction between a human and a machine, called Virtual Partner Interaction (VPI). In VPI, humans coordinate with a virtual partner whose behavior is driven by a computerized version of the HKB equations, known to govern basic forms of human coordination. VPI is a principled approach to human-machine interaction and may open up new ways to understand how humans interact with human-like machines.

Books

Kelso's first full-length book, Dynamic Patterns : The Self-Organization of Brain and Behavior (MIT Press, 1995) summarizes the first 20 years of his theoretical and experimental work on coordination, and argues that the creation and evolution of patterned behavior at all levels—from neurons to mind—is governed by the dynamical processes of self-organization. The book is written for the general reader, and uses simple experimental examples and illustrations to convey essential concepts, strategies, and methods, with a minimum of mathematics.

With Viktor Jirsa, Kelso edited the book Coordination Dynamics: Issues and Trends (Springer, 2004). Kelso is also the Founding Editor for the Springer series on "Understanding Complex Systems" and has served on the Editorial Boards of 10 scientific journals/periodicals in various disciplines.

Kelso's second full-length book, written with his former postdoc David A. Engstrøm, is The Complementary Nature (MIT Press, 2006). This book attempts to reconcile what it calls "the philosophy of complementary pairs" with the science of coordination dynamics. Pairs of opposites are found everywhere in nature and in science (e.g. cooperation and competition, integration and segregation, individual and collective, self and other, body and mind, nature and nurture, etc. etc.). Kelso and Engstrøm argue that these pairs are not mutually exclusive, but complementary. They propose a comprehensive, empirically
Empiricism
Empiricism is a theory of knowledge that asserts that knowledge comes only or primarily via sensory experience. One of several views of epistemology, the study of human knowledge, along with rationalism, idealism and historicism, empiricism emphasizes the role of experience and evidence,...

-based scientific theory of how contraries can be reconciled based on Kelso's theory of metastable coordination dynamics. The essence of the theory is that the human brain is capable of displaying two apparently contradictory, mutually exclusive behaviors - integration and segregation - at the same time. Kelso and Engstrøm use the tilde, or squiggle (~), as the symbol for reconciled complementary pairs (e.g. body~mind, nature~nurture). The squiggle exposes a basic truth: both complementary aspects and their dynamics are needed for an exhaustive description and understanding of the complex phenomena and systems in life, mind, society and nature.

Publications

Scott Kelso has published numerous articles and books. A selection:
  • 1973. The nerve compression block as a determiner of behavioral and neurological parameters
  • 1982. Human motor behavior: an introduction‎.
  • 1982. The Development of movement control and coordination‎, with Jane E. Clark.
  • 1995. Dynamic patterns: the self-organization of brain and behavior
  • 2004. ‎Coordination dynamics: issues and trends‎, with Viktor K. Jirsa
  • 2006. The complementary nature, with David A. Engstrøm

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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