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In aphasia, a person may be unable to comprehend or unable to formulate language because of damage to specific brain regions. The major causes are stroke and head trauma; prevalence is hard to determine but aphasia due to stroke is estimated to be 0.1–0.4% in the Global North. Aphasia can also be the result of brain tumors, epilepsy, autoimmune neurological diseases, brain infections, or neurodegenerative diseases.
Dyslexia, previously known as word blindness, is a learning disability that affects either reading or writing. Different people are affected to different degrees. Problems may include difficulties in spelling words, reading quickly, writing words, "sounding out" words in the head, pronouncing words when reading aloud and understanding what one reads. Often these difficulties are first noticed at school. The difficulties are involuntary, and people with this disorder have a normal desire to learn. People with dyslexia have higher rates of attention deficit hyperactivity disorder (ADHD), developmental language disorders, and difficulties with numbers.
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.
Neurolinguistics is the study of neural mechanisms in the human brain that control the comprehension, production, and acquisition of language. As an interdisciplinary field, neurolinguistics draws methods and theories from fields such as neuroscience, linguistics, cognitive science, communication disorders and neuropsychology. Researchers are drawn to the field from a variety of backgrounds, bringing along a variety of experimental techniques as well as widely varying theoretical perspectives. Much work in neurolinguistics is informed by models in psycholinguistics and theoretical linguistics, and is focused on investigating how the brain can implement the processes that theoretical and psycholinguistics propose are necessary in producing and comprehending language. Neurolinguists study the physiological mechanisms by which the brain processes information related to language, and evaluate linguistic and psycholinguistic theories, using aphasiology, brain imaging, electrophysiology, and computer modeling.
Agraphia is an acquired neurological disorder causing a loss in the ability to communicate through writing, either due to some form of motor dysfunction or an inability to spell. The loss of writing ability may present with other language or neurological disorders; disorders appearing commonly with agraphia are alexia, aphasia, dysarthria, agnosia, acalculia and apraxia. The study of individuals with agraphia may provide more information about the pathways involved in writing, both language related and motoric. Agraphia cannot be directly treated, but individuals can learn techniques to help regain and rehabilitate some of their previous writing abilities. These techniques differ depending on the type of agraphia.
Neuropsychology is a branch of psychology concerned with how a person's cognition and behavior are related to the brain and the rest of the nervous system. Professionals in this branch of psychology focus on how injuries or illnesses of the brain affect cognitive and behavioral functions.
Cognitive neuropsychology is a branch of cognitive psychology that aims to understand how the structure and function of the brain relates to specific psychological processes. Cognitive psychology is the science that looks at how mental processes are responsible for the cognitive abilities to store and produce new memories, produce language, recognize people and objects, as well as our ability to reason and problem solve. Cognitive neuropsychology places a particular emphasis on studying the cognitive effects of brain injury or neurological illness with a view to inferring models of normal cognitive functioning. Evidence is based on case studies of individual brain damaged patients who show deficits in brain areas and from patients who exhibit double dissociations. Double dissociations involve two patients and two tasks. One patient is impaired at one task but normal on the other, while the other patient is normal on the first task and impaired on the other. For example, patient A would be poor at reading printed words while still being normal at understanding spoken words, while the patient B would be normal at understanding written words and be poor at understanding spoken words. Scientists can interpret this information to explain how there is a single cognitive module for word comprehension. From studies like these, researchers infer that different areas of the brain are highly specialised. Cognitive neuropsychology can be distinguished from cognitive neuroscience, which is also interested in brain-damaged patients, but is particularly focused on uncovering the neural mechanisms underlying cognitive processes.
Brenda Milner is a British-Canadian neuropsychologist who has contributed extensively to the research literature on various topics in the field of clinical neuropsychology. Milner is a professor in the Department of Neurology and Neurosurgery at McGill University and a professor of Psychology at the Montreal Neurological Institute. As of 2020, she holds more than 25 honorary degrees and she continued to work in her nineties. Her current work covers many aspects of neuropsychology including her lifelong interest in the involvement of the temporal lobes in episodic memory. She is sometimes referred to as the founder of neuropsychology and has been essential in its development. She received the Balzan Prize for Cognitive Neuroscience in 2009, and the Kavli Prize in Neuroscience, together with John O'Keefe, and Marcus E. Raichle, in 2014. She turned 100 in July 2018 and at the time was still overseeing the work of researchers.
Dysgraphia is a neurological disorder and learning disability that concerns impairments in written expression, which affects the ability to write, primarily handwriting, but also coherence. It is a specific learning disability (SLD) as well as a transcription disability, meaning that it is a writing disorder associated with impaired handwriting, orthographic coding and finger sequencing. It often overlaps with other learning disabilities and neurodevelopmental disorders such as speech impairment, attention deficit hyperactivity disorder (ADHD) or developmental coordination disorder (DCD).
Doreen Kimura was a Canadian psychologist who was professor at the University of Western Ontario and professor emeritus at Simon Fraser University. Kimura was recognized for her contributions to the field of neuropsychology and later, her advocacy for academic freedom. She was the founding president of the Society for Academic Freedom and Scholarship.
Deep dyslexia is a form of dyslexia that disrupts reading processes. Deep dyslexia may occur as a result of a head injury, stroke, disease, or operation. This injury results in the occurrence of semantic errors during reading and the impairment of nonword reading.
Trevor Harley is emeritus chair of Cognitive Psychology. His primary research is in the psychology of language and consciousness. From 2003 until 2016 he was Head and Dean of the School of Psychology at the University of Dundee, Scotland, United Kingdom. He is author of several books, including "The Psychology of Language", currently in its fourth edition, published by Psychology Press, "Talking the talk", a book about the psychology of language (psycholinguistics) aimed at a more general audience, "The Science of Consciousness", a general text on consciousness, and "The Psychology of Weather", about how weather affects behaviour. He is a Fellow of the British Psychological Society.
Marlene Behrmann is a Professor in the Department of Ophthalmology at the University of Pittsburgh. She was previously a Professor of Psychology at Carnegie Mellon University. She specializes in the cognitive neuroscience of visual perception, with a specific focus on object recognition.
Brian Lewis Butterworth FBA is emeritus professor of cognitive neuropsychology in the Institute of Cognitive Neuroscience at University College London, England. His research has ranged from speech errors and pauses, short-term memory deficits, reading and the dyslexias both in alphabetic scripts and Chinese, and mathematics and dyscalculia. He has also pioneered educational neuroscience, notably in the study of learners with special educational needs.
Cognitive Neuropsychology is a peer-reviewed academic journal aimed at promoting the investigation of human cognition that is based on neuropsychological methods including brain pathology, recording, stimulation, brain imaging or the study of developmental deficits.
Steven L. Small is the Aage and Margareta Møller Distinguished Professor in Behavioral and Brain Sciences at the University of Texas at Dallas, and dean of its School of Behavioral and Brain Sciences. Small is a specialist in the neurobiology of language.
Catherine J. "Cathy" Price is a British neuroscientist and academic. She is Professor of Cognitive Neuroscience and director of the Wellcome Trust Centre for Neuroimaging at University College London.
Developmental neuropsychology combines the fields of neuroscience and developmental psychology, while drawing from various other related disciplines. It examines the relationship of behavior and brain function throughout the course of an individual's lifespan, though often emphasis is put on childhood and adolescence when the majority of brain development occurs. Research tends to focus on development of important behavioral functions like perception, language, and other cognitive processes. Studies in this field are often centered around children or other individuals with developmental disorders or various kinds of brain related trauma or injury. A key concept of this field is that looks at and attempts to relate the psychological aspects of development, such as behavior, comprehension, cognition, etc., to the specific neural structures; it draws parallels between behavior and mechanism in the brain. Research in this field involves various cognitive tasks and tests as well as neuroimaging. Some of the many conditions studied by developmental neuropsychologists include congenital or acquired brain damage, autism spectrum disorder, attention deficit disorder, executive dysfunction, seizures, intellectual disabilities, obsessive compulsive disorder, stuttering, schizophrenia, developmental aphasia, and other learning delays such as dyslexia, dysgraphia, and dyspraxia.
Carlo Semenza is an Italian neuropsychologist and cognitive neuroscientist. Carlo Semenza’s research activity mostly contributed to the field of aphasiology, neuropsychology of language, and numerical cognition.
Cynthia K. Thompson is a neurolinguist and cognitive neuroscientist most known for her research on the brain and language processing and the neurobiology of language recovery in people with aphasia. She served as a member of the faculty at Northwestern University (NU) for 30 years as a Distinguished Ralph and Jean Sundin Professor in the Department of Communication Sciences and Disorders. She also directed the Aphasia and Neurolinguistics Research Laboratory (ANRL) and the Center for the Neurobiology of Language Recovery (CNLR) and is a Distinguished Ralph and Jean Sundin Professor Emerita at NU.
References
- 1 2 Rapp, Brenda Carla (1990). Sublexical orthographic structure in reading (Ph.D thesis). Johns Hopkins University. OCLC 27285013.
- ↑ "Brenda Rapp". cogsci.jhu.edu. Krieger School of Arts and Sciences, Johns Hopkins University . Retrieved 27 August 2017.
- ↑ Rapp, Brenda (2010). "Editorial". Cognitive Neuropsychology . 27 (1–2): 1–2. doi: 10.1080/02687038.2010.514122 . PMID 20812057.
- 1 2 3 "Rapp studies brain recovery after strokes". The Johns Hopkins News-Letter. Retrieved 2018-08-09.
- ↑ Rapp, Brenda; Miozzo, Michele (2011). "Introduction to papers from the 5th Workshop on Language Production: The neural bases of language production". Language and Cognitive Processes. 26 (7): 869–877. doi:10.1080/01690965.2010.544595. S2CID 4802333. (Guest editors)
- ↑ Rapp, Brenda; Beeson, Pelagie M. (June–July 2003). "Introduction: Dysgraphia: cognitive processes, remediation, and neural substrates". Aphasiology. 17 (6–7): 531–534. doi:10.1080/02687030344000012. S2CID 218638970. (Guest editors)
- ↑ "brenda rapp - Google Scholar Citations". scholar.google.com. Retrieved 2018-08-09.
- ↑ Lea, Richard (2016-02-08). "Spelling uses multiple parts of the brain, research shows". the Guardian. Retrieved 2018-08-09.
- ↑ Gumbrecht, Jamie. "What makes a good speller (or a bad one)?". CNN. Retrieved 2018-08-09.
- ↑ Chapman, Ben. "Scientists hope to make strides in literacy tests by studying the brains of great spellers - NY Daily News". nydailynews.com. Retrieved 2018-08-09.
- ↑ "Researchers explore how the brain separates our abilities to talk, write". The Hub. 2015-05-06. Retrieved 2018-08-09.
- ↑ Wells, Carrie. "Studying stroke survivors gives Hopkins researchers a window into how we spell". baltimoresun.com. Retrieved 2018-08-09.
