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Cognitive science is the interdisciplinary, scientific study of the mind and its processes with input from linguistics, psychology, neuroscience, philosophy, computer science/artificial intelligence, and anthropology. It examines the nature, the tasks, and the functions of cognition. Cognitive scientists study intelligence and behavior, with a focus on how nervous systems represent, process, and transform information. Mental faculties of concern to cognitive scientists include language, perception, memory, attention, reasoning, and emotion; to understand these faculties, cognitive scientists borrow from fields such as linguistics, psychology, artificial intelligence, philosophy, neuroscience, and anthropology. The typical analysis of cognitive science spans many levels of organization, from learning and decision to logic and planning; from neural circuitry to modular brain organization. One of the fundamental concepts of cognitive science is that "thinking can best be understood in terms of representational structures in the mind and computational procedures that operate on those structures."
Synchronization is the coordination of events to operate a system in unison. For example, the conductor of an orchestra keeps the orchestra synchronized or in time. Systems that operate with all parts in synchrony are said to be synchronous or in sync—and those that are not are asynchronous.
Cognitive neuroscience is the scientific field that is concerned with the study of the biological processes and aspects that underlie cognition, with a specific focus on the neural connections in the brain which are involved in mental processes. It addresses the questions of how cognitive activities are affected or controlled by neural circuits in the brain. Cognitive neuroscience is a branch of both neuroscience and psychology, overlapping with disciplines such as behavioral neuroscience, cognitive psychology, physiological psychology and affective neuroscience. Cognitive neuroscience relies upon theories in cognitive science coupled with evidence from neurobiology, and computational modeling.
Deductive reasoning is the mental process of drawing deductive inferences. An inference is deductively valid if its conclusion follows logically from its premises, i.e. if it is impossible for the premises to be true and the conclusion to be false. For example, the inference from the premises "all men are mortal" and "Socrates is a man" to the conclusion "Socrates is mortal" is deductively valid. An argument is sound if it is valid and all its premises are true. Some theorists define deduction in terms of the intentions of the author: they have to intend for the premises to offer deductive support to the conclusion. With the help of this modification, it is possible to distinguish valid from invalid deductive reasoning: it is invalid if the author's belief about the deductive support is false, but even invalid deductive reasoning is a form of deductive reasoning.
A heuristic, or heuristic technique, is any approach to problem solving or self-discovery that employs a practical method that is not guaranteed to be optimal, perfect, or rational, but is nevertheless sufficient for reaching an immediate, short-term goal or approximation. Where finding an optimal solution is impossible or impractical, heuristic methods can be used to speed up the process of finding a satisfactory solution. Heuristics can be mental shortcuts that ease the cognitive load of making a decision.
Attention is the behavioral and cognitive process of selectively concentrating on a discrete aspect of information, whether considered subjective or objective, while ignoring other perceivable information. William James (1890) wrote that "Attention is the taking possession by the mind, in clear and vivid form, of one out of what seem several simultaneously possible objects or trains of thought. Focalization, concentration, of consciousness are of its essence." Attention has also been described as the allocation of limited cognitive processing resources. Attention is manifested by an attentional bottleneck, in terms of the amount of data the brain can process each second; for example, in human vision, only less than 1% of the visual input data can enter the bottleneck, leading to inattentional blindness.
Eye movement desensitization and reprocessing (EMDR) is a form of psychotherapy developed by Francine Shapiro in the 1980s that was originally designed to alleviate the distress associated with traumatic memories such as post-traumatic stress disorder (PTSD). In EMDR, the person being treated recalls distressing experiences whilst doing bilateral stimulation, such as side-to-side eye movement or physical stimulation, such as tapping either side of the body.
Vision span or perceptual span is a controversial concept referring to the angular span, within which the human eye has sharp enough vision to perform an action accurately. The visual field of the human eye spans approximately 120 degrees of arc. However, most of that arc is peripheral vision. The human eye has much greater resolution in the macula, where there is a higher density of cone cells. The macula has a diameter of about 16 degrees of the retina. The field of view that is observed with sufficient resolution to read text typically spans about 6 degrees of arc, which is wide enough to allow a clear view of about five words in a row when printed text at ordinary size is held about 50 centimeters from the eyes. Regarding face processing, the field of view with a sufficient amount of information in order to recognise faces accurately spans about 7° which represents about 45% of a face. The brain creates the illusion of having a greater visual span by automatically and unconsciously moving the center of vision into any area of interest in the field of view.
Problem solving is the process of achieving a goal by overcoming obstacles, a frequent part of most activities. Problems in need of solutions range from simple personal tasks to complex issues in business and technical fields. The former is an example of simple problem solving (SPS) addressing one issue, whereas the latter is complex problem solving (CPS) with multiple interrelated obstacles. Another classification is into well-defined problems with specific obstacles and goals, and ill-defined problems in which the current situation is troublesome but it is not clear what kind of resolution to aim for. Similarly, one may distinguish formal or fact-based problems requiring psychometric intelligence, versus socio-emotional problems which depend on the changeable emotions of individuals or groups, such as tactful behavior, fashion, or gift choices.
Eye tracking is the process of measuring either the point of gaze or the motion of an eye relative to the head. An eye tracker is a device for measuring eye positions and eye movement. Eye trackers are used in research on the visual system, in psychology, in psycholinguistics, marketing, as an input device for human-computer interaction, and in product design. Eye trackers are also being increasingly used for rehabilitative and assistive applications . There are a number of methods for measuring eye movement. The most popular variant uses video images from which the eye position is extracted. Other methods use search coils or are based on the electrooculogram.
Eye movement includes the voluntary or involuntary movement of the eyes. Eye movements are used by a number of organisms to fixate, inspect and track visual objects of interests. A special type of eye movement, rapid eye movement, occurs during REM sleep.
In the scientific study of vision, smooth pursuit describes a type of eye movement in which the eyes remain fixated on a moving object. It is one of two ways that visual animals can voluntarily shift gaze, the other being saccadic eye movements. Pursuit differs from the vestibulo-ocular reflex, which only occurs during movements of the head and serves to stabilize gaze on a stationary object. Most people are unable to initiate pursuit without a moving visual signal. The pursuit of targets moving with velocities of greater than 30°/s tends to require catch-up saccades. Smooth pursuit is asymmetric: most humans and primates tend to be better at horizontal than vertical smooth pursuit, as defined by their ability to pursue smoothly without making catch-up saccades. Most humans are also better at downward than upward pursuit. Pursuit is modified by ongoing visual feedback.
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 with or without eye movements. The ability to consciously locate an object or target amongst a complex array of stimuli has been extensively studied over the past 40 years. Practical examples of using visual search can be seen in everyday life, such as when one is picking out a product on a supermarket shelf, when animals are searching for food among piles of leaves, when trying to find a friend in a large crowd of people, or simply when playing visual search games such as Where's Wally?
Hypothesis Theory is a psychological theory of learning developed during the 1960s and 1970s.
Fixation or visual fixation is the maintaining of the gaze on a single location. An animal can exhibit visual fixation if it possess a fovea in the anatomy of their eye. The fovea is typically located at the center of the retina and is the point of clearest vision. The species in which fixational eye movement has been verified thus far include humans, primates, cats, rabbits, turtles, salamanders, and owls. Regular eye movement alternates between saccades and visual fixations, the notable exception being in smooth pursuit, controlled by a different neural substrate that appears to have developed for hunting prey. The term "fixation" can either be used to refer to the point in time and space of focus or the act of fixating. Fixation, in the act of fixating, is the point between any two saccades, during which the eyes are relatively stationary and virtually all visual input occurs. In the absence of retinal jitter, a laboratory condition known as retinal stabilization, perceptions tend to rapidly fade away. To maintain visibility, the nervous system carries out a procedure called fixational eye movement, which continuously stimulates neurons in the early visual areas of the brain responding to transient stimuli. There are three categories of fixational eye movement: microsaccades, ocular drifts, and ocular microtremor. At small amplitudes the boundaries between categories become unclear, particularly between drift and tremor.
Within computer technology, the gaze-contingency paradigm is a general term for techniques allowing a computer screen display to change in function depending on where the viewer is looking. Gaze-contingent techniques are part of the eye movement field of study in psychology.
In cognitive psychology, sequence learning is inherent to human ability because it is an integrated part of conscious and nonconscious learning as well as activities. Sequences of information or sequences of actions are used in various everyday tasks: "from sequencing sounds in speech, to sequencing movements in typing or playing instruments, to sequencing actions in driving an automobile." Sequence learning can be used to study skill acquisition and in studies of various groups ranging from neuropsychological patients to infants. According to Ritter and Nerb, “The order in which material is presented can strongly influence what is learned, how fast performance increases, and sometimes even whether the material is learned at all.” Sequence learning, more known and understood as a form of explicit learning, is now also being studied as a form of implicit learning as well as other forms of learning. Sequence learning can also be referred to as sequential behavior, behavior sequencing, and serial order in behavior.
Spatial cognition is the acquisition, organization, utilization, and revision of knowledge about spatial environments. It is most about how animals including humans behave within space and the knowledge they built around it, rather than space itself. These capabilities enable individuals to manage basic and high-level cognitive tasks in everyday life. Numerous disciplines work together to understand spatial cognition in different species, especially in humans. Thereby, spatial cognition studies also have helped to link cognitive psychology and neuroscience. Scientists in both fields work together to figure out what role spatial cognition plays in the brain as well as to determine the surrounding neurobiological infrastructure.
Robert H. Wurtz is an American neuroscientist working as a NIH Distinguished Scientist and Chief of the Section on Visuomotor Integration at the National Eye Institute. He is a member of the US National Academy of Sciences and the American Academy of Arts and Sciences. He is recognised for developing methods for studying the visual system in 'awake-behaving' primates, a technique now widely used for the study of higher brain functions. He pioneered the study of the neuronal basis of vision and its relation with cognitive functions.
Fred W. Mast is a full professor of Psychology at the University of Bern in Switzerland, specialized in mental imagery, sensorimotor processing, and visual perception. He directs the Cognitive Psychology, Perception, and Research Methods Section at the Department of Psychology of the University of Bern.
References
- ↑ Rudolf Groner . In: Kürschners Deutscher Gelehrten-Kalender Online. Berlin: De Gruyter
- ↑ Hochschulgeschichte Berns 1528-1984, Hallwag AG Bern, 1984. p. 728-729
- ↑ "Kurzinformation zur Forschungstätigkeit von Rudolf Groner" (PDF) (in German).
- ↑ Groner, R. (1978). Hypothesen im Denkprozess. Grundlagen einer verallgemeinerten Theorie auf der Basis elementarer Informationsverarbeitung. Bern, Stuttgart & Wien: Huber.
- ↑ Groner, R., & Groner, M. (1983). A stochastic hypothesis testing model for multi-term series problems, based on eye fixations. In: Groner, R., Menz, C., Fisher, D., & Monty, R.A. (Eds.). Eye movements and psychological functions: International views. Hillsdale N.J.: Lawrence Erlbaum.
- ↑ Groner, R., & Groner, M. (1982). Towards a hypothetico-deductive theory of cognitive activity. In: R. Groner & P. Fraisse (Eds.), Cognition and eye movements. Amsterdam: North Holland.
- ↑ Groner, R., Walder, F., & Groner, M. (1984). Looking at faces: Local and global aspects of scanpaths. In : A.G. Gale & F. Johnson (Eds.), Theoretical and applied aspects of eye movement research. Amsterdam: North Holland.
- ↑ Menz, C., & Groner, R. (1985). The effects of stimulus characteristics, task requirements and individual differences on scanning patterns. In: R. Groner, G.W. McConkie & Ch. Menz (Eds.), Eye movements and human information processing. Amsterdam: North Holland.
- ↑ Groner, R.; Groner, M. (1989). "Attention and eye movement control: an overview". European Archives of Psychiatry and Neurological Sciences. 239 (1): 9–16. doi:10.1007/bf01739737. PMID 2676541. S2CID 8551757.
- ↑ Siegenthaler, E. & Groner, R. (2009). Multifunctional usability analysis and its application to the comparison of eBooks with conventional books. In Liversedge, J.P. (Ed.). Abstracts of the Fifteenth European Conference on Eye Movements, Southampton, August 24–26, 2009. In: Journal of Eye Movement Research, 3, special issue, 70.
- ↑ Groner, R., & Siegenthaler, E. (2009). Improving the usability of eLearning tools: The Multifunctional Analysis and its application in distance teaching. Proceedings of the ICDE/EADTU Conference in Maastricht, June 2009. http://www.ou.nl/Docs/Campagnes/ICDE2009/Papers/Final_Paper_100Groner.pdf
- ↑ Siegenthaler, E., Wurtz, P., & Groner, R. (2010). Improving the Usability of E-Book Readers. In: Journal of Usability Studies, 6(1), 25-38.
- ↑ Siegenthaler, E.; Wurtz, P; Bergamin, P.; Groner, R. (2011). "Comparing reading processes on e-ink displays and print". Displays. 32 (5): 268–273. doi:10.1016/j.displa.2011.05.005.
- ↑ Groner, R., Groner, M., & Bischof, W.F. (1983). Methods of heuristics. Hillsdale N.J.: Lawrence Erlbaum.
- ↑ Groner, R., & Groner, M. (1991). Heuristische versus algorithmische Orientierung als Dimension des individuellen kognitiven Stils. In: K. Grawe, N. Semmer, R. Hänni (Hrsg.), Über die richtige Art, Psychologie zu betreiben. Göttingen: Hogrefe