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History Of Dyslexia Research
The history of dyslexia research spans from the late 1800s to the present. Pre-1900 The concept of "word-blindness" (''German'': "wortblindheit"), as an isolated condition, was first developed by the German physician Adolph Kussmaul in 1877. Identified by Oswald Berkhan in 1881, the term 'dyslexia' was later coined in 1887 by Rudolf Berlin, an ophthalmologist practicing in Stuttgart, Germany. Rudolf Berlin used the term dyslexia to describe partial reading loss in an adult patient. The word is drawn from the Greek language, Greek prefix δυσ- (''dus-''), "hard, bad, difficult" + λέξις (''lexis''), "speech, word". He used the term to refer to a case of a young boy who had a severe impairment in learning to read and write in spite of showing typical intellectual and physical abilities in all other respects. In 1896, W. Pringle Morgan, a British physician, from Seaford, East Sussex published a description of a reading-specific learning disorder in a report to the British ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adolf Kussmaul
Adolph Kußmaul (german: Carl Philipp Adolf Konrad Kußmaul; 22 February 1822 – 28 May 1902) was a German physician and a leading clinician of his time. He was born as the son and grandson of physicians at Graben near Karlsruhe and studied at Heidelberg. He entered the army after graduation and spent two years as an army surgeon. This was followed by a period as a general practitioner before he went to Würzburg to study for his doctorate under Virchow. He was subsequently Professor of Medicine at Heidelberg (1857), Erlangen (1859), Freiburg (1859) and Straßburg (1876). Beyond his medical skills he was also active in literature. He is regarded as one of the creators of the term Biedermeier. He died in Heidelberg. Eponymous terms His name continues to be used in eponyms. He described two medical signs and one disease which have eponymous names that remain in use: * Kussmaul breathing - Very deep and labored breathing with normal, rapid or reduced frequency seen in severe Diab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grace Fernald
Grace Maxwell Fernald (November 29, 1879 – January 16, 1950) was an educational psychologist and influential figure in early twentieth century literacy education. Fernald established "the first clinic for remedial instruction in 1921 at the University of California, Los Angeles". Tracing tactile learning tendencies back to Quintilian, Séguin, and Montessori, Fernald's kinesthetic spelling and reading method prompted struggling students to trace words. Years of research culminated in 1943 with her classic work, ''Remedial Techniques in Basic School Subjects''. The popular kinesthetic method anchors modern instruction in the areas of special education and remedial reading. Kinesthetic learning is also included as one of Howard Gardner's multiple intelligences. Fernald's notion of incorporating the physical with the auditory, verbal, and visual elements of reading instruction, now known as "VAKT", multimodal learning, or multisensory imagery, continues to guide educators today. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microgyrus
A microgyrus is an area of the cerebral cortex that includes only four cortical layers instead of six. Microgyria are believed by some to be part of the genetic lack of prenatal development which is a cause of, or one of the causes of, dyslexia. Albert Galaburda of Harvard Medical School noticed that language centers in dyslexic brains showed microscopic flaws known as ectopias and microgyria (Galaburda ''et al.'', 2006, ''Nature Neuroscience'' 9(10): 1213–1217). Both affect the normal six-layer structure of the cortex. These flaws affect connectivity and functionality of the cortex in critical areas related to sound and visual processing Visual processing is a term that is used to refer to the brain's ability to use and interpret visual information from the world around us. The process of converting light energy into a meaningful image is a complex process that is facilitated by .... These and similar structural abnormalities may be the basis of the inevitable and hard to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cortex (anatomy)
In anatomy and zoology, the cortex (plural cortices) is the outermost (or superficial) layer of an organ. Organs with well-defined cortical layers include kidneys, adrenal glands, ovaries, the thymus, and portions of the brain, including the cerebral cortex, the best-known of all cortices. Etymology The word is of Latin origin and means bark, rind, shell or husk. Notable examples * The renal cortex, between the renal capsule and the renal medulla; assists in ultrafiltration * The adrenal cortex, situated along the perimeter of the adrenal gland; mediates the stress response through the production of various hormones * The thymic cortex, mainly composed of lymphocytes; functions as a site for somatic recombination of T cell receptors, and positive selection * The cerebral cortex, the outer layer of the cerebrum, plays a key role in memory, attention, perceptual awareness, thought, language, and consciousness. * Cortical bone is the hard outer layer of bone; distinct from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blood Vessel
The blood vessels are the components of the circulatory system that transport blood throughout the human body. These vessels transport blood cells, nutrients, and oxygen to the tissues of the body. They also take waste and carbon dioxide away from the tissues. Blood vessels are needed to sustain life, because all of the body's tissues rely on their functionality. There are five types of blood vessels: the arteries, which carry the blood away from the heart; the arterioles; the capillaries, where the exchange of water and chemicals between the blood and the tissues occurs; the venules; and the veins, which carry blood from the capillaries back towards the heart. The word ''vascular'', meaning relating to the blood vessels, is derived from the Latin ''vas'', meaning vessel. Some structures – such as cartilage, the epithelium, and the lens and cornea of the eye – do not contain blood vessels and are labeled ''avascular''. Etymology * artery: late Middle English; from Latin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ectopia
Ectopia, ectopic, or ectopy may refer to: *Ectopia (medicine), including a list of medical uses of ectopia or ectopic **Ectopic pregnancy, a pregnancy that occurs outside the uterus **Ectopic beat, or cardiac ectopy, a disturbance in cardiac rhythm * ''Ectopia'' (album), by Steroid Maximus, 2002 *Ectopic Entertainment Self Immolation is a record label and publishing company run by J. G. Thirlwell. Originally an actual label for Thirlwell's self-released early Foetus EPs and albums, Self Immolation became more akin to a vanity label for Thirlwell's releases ..., a record label *''Ectopia'', a 2014 novel by Martin J. Goodman See also * * Ecotopia (other) {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Language Center
In neuroscience and psychology, the term language center refers collectively to the areas of the brain which serve a particular function for speech processing and production. Language is a core system, which gives humans the capacity to solve difficult problems and provides them with a unique type of social interaction. Language allows individuals to attribute symbols (e.g. words or signs) to specific concepts and display them through sentences and phrases that follow proper grammatical rules. Moreover, speech is the mechanism in which language is orally expressed. Information is exchanged in a larger system including language-related regions. These regions are connected by white matter fiber tracts that make possible the transmission of information between regions. The white matter fiber bunches were recognized to be important for language production after suggesting that it is possible to make a connection between multiple language centers. The three classical language areas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phonological Awareness
Phonological awareness is an individual's awareness of the phonological structure, or sound structure, of words. Phonological awareness is an important and reliable predictor of later reading ability and has, therefore, been the focus of much research. Overview Phonological awareness involves the detection and manipulation of sounds at three levels of sound structure: (1) syllables, (2) onsets and rimes, and (3) phonemes. Awareness of these sounds is demonstrated through a variety of tasks (see below). Available published tests of phonological awareness (for example PhAB2) are often used by teachers, psychologists and speech therapists to help understand difficulties in this aspect of language and literacy. Although the tasks vary, they share the basic requirement that some operation (e.g., identifying, comparing, separating, combining, generating) be performed on the sounds. It is assumed that the individual performing these tasks must have awareness of the units of sound in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phonological Deficit
The phonological deficit hypothesis is a prevalent cognitive-level explanation for the cause of reading difficulties and dyslexia. It stems from evidence that individuals with dyslexia tend to do poorly on tests which measure their ability to decode nonsense words using conventional phonetic rules, and that there is a high correlation between difficulties in connecting the sounds of language to letters (phonemic awareness) and reading delays or failure in children. The basic hypothesis is that reading failure or dyslexia stems from a functional or structural deficit in left hemispheric brain areas associated with processing the sounds of language. Some researchers have studied the structure and function of neural pathways in the language areas of the brain. Others have focused on the perception of short or rapidly varying sounds of language, positing that the core deficit is one of timing rather than of overall function. Since the 1990s, the phonological deficit hypothesis has be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoneme
In phonology and linguistics, a phoneme () is a unit of sound that can distinguish one word from another in a particular language. For example, in most dialects of English, with the notable exception of the West Midlands and the north-west of England, the sound patterns (''sin'') and (''sing'') are two separate words that are distinguished by the substitution of one phoneme, , for another phoneme, . Two words like this that differ in meaning through the contrast of a single phoneme form a ''minimal pair''. If, in another language, any two sequences differing only by pronunciation of the final sounds or are perceived as being the same in meaning, then these two sounds are interpreted as phonetic variants of a single phoneme in that language. Phonemes that are established by the use of minimal pairs, such as ''tap'' vs ''tab'' or ''pat'' vs ''bat'', are written between slashes: , . To show pronunciation, linguists use square brackets: (indicating an aspirated ''p'' in ''p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phonology
Phonology is the branch of linguistics that studies how languages or dialects systematically organize their sounds or, for sign languages, their constituent parts of signs. The term can also refer specifically to the sound or sign system of a particular language variety. At one time, the study of phonology related only to the study of the systems of phonemes in spoken languages, but may now relate to any linguistic analysis either: Sign languages have a phonological system equivalent to the system of sounds in spoken languages. The building blocks of signs are specifications for movement, location, and handshape. At first, a separate terminology was used for the study of sign phonology ('chereme' instead of 'phoneme', etc.), but the concepts are now considered to apply universally to all human languages. Terminology The word 'phonology' (as in 'phonology of English') can refer either to the field of study or to the phonological system of a given language. This is one of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Journal Of Orthopsychiatry
The ''American Journal of Orthopsychiatry'' is a bimonthly peer-reviewed medical journal covering orthopsychiatry. It is published by the American Psychological Association on behalf of the Global Alliance for Behavioral Health and Social Justice and the editors-in-chief are Jill D. McLeigh (University of Colorado School of Medicine) and William Spaulding (University of Nebraska - Lincoln). Abstracting and indexing The journal is abstracted and indexed in: According to the ''Journal Citation Reports'', the journal has a 2020 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as i ... of 2.364. References External links * {{Official website, http://www.apa.org/pubs/journals/ort American Orthopsychiatric Association Psychiatry journals American Psychological Associ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
