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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] |
Dyslexia
Dyslexia, also known until the 1960s as word blindness, is a disorder characterized by reading below the expected level for one's age. 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. Dyslexia is believed to be caused by the interaction of genetic and environmental factors. Some cases run in families. Dyslexia that develops due to a traumatic brain injury, stroke, or dementia is sometimes called "acquired dyslexia" or alexia. The underlying mechanisms of dyslexia result from differ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phonemic Awareness
Phonemic awareness is a subset of phonological awareness in which listeners are able to hear, identify and manipulate phonemes, the smallest mental units of sound that help to differentiate units of meaning (morphemes). Separating the spoken word "cat" into three distinct phonemes, , , and , requires phonemic awareness. The National Reading Panel has found that phonemic awareness improves children's word reading and reading comprehension and helps children learn to spell. Phonemic awareness is the basis for learning phonics. Phonemic awareness and phonological awareness are often confused since they are interdependent. Phonemic awareness is the ability to hear and manipulate individual phonemes. Phonological awareness includes this ability, but it also includes the ability to hear and manipulate larger units of sound, such as onsets and rimes and syllables. Impact on reading development Studies by Vickie Snider have shown that phonemic awareness has a direct correlation with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lateralization Of Brain Function
The lateralization of brain function is the tendency for some neural functions or cognitive processes to be specialized to one side of the brain or the other. The median longitudinal fissure separates the human brain into two distinct cerebral hemispheres, connected by the corpus callosum. Although the macrostructure of the two hemispheres appears to be almost identical, different composition of neuronal networks allows for specialized function that is different in each hemisphere. Lateralization of brain structures is based on general trends expressed in healthy patients; however, there are numerous counterexamples to each generalization. Each human's brain develops differently, leading to unique lateralization in individuals. This is different from specialization, as lateralization refers only to the function of one structure divided between two hemispheres. Specialization is much easier to observe as a trend, since it has a stronger anthropological history. The best examp ... [...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] |
Brain
A brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It is located in the head, usually close to the sensory organs for senses such as vision. It is the most complex organ in a vertebrate's body. In a human, the cerebral cortex contains approximately 14–16 billion neurons, and the estimated number of neurons in the cerebellum is 55–70 billion. Each neuron is connected by synapses to several thousand other neurons. These neurons typically communicate with one another by means of long fibers called axons, which carry trains of signal pulses called action potentials to distant parts of the brain or body targeting specific recipient cells. Physiologically, brains exert centralized control over a body's other organs. They act on the rest of the body both by generating patterns of muscle activity and by driving the secretion of chemicals called hormones. This centralized control allows rapid and coordinated respon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Auditory Processing Disorder
Auditory processing disorder (APD), rarely known as King-Kopetzky syndrome or auditory disability with normal hearing (ADN), is a neurodevelopmental disorder affecting the way the brain processes auditory information. Individuals with APD usually have normal structure and function of the outer, middle, and inner ear (peripheral hearing). However, they cannot process the information they hear in the same way as others do, which leads to difficulties in recognizing and interpreting sounds, especially the sounds composing speech. It is thought that these difficulties arise from dysfunction in the central nervous system. It is highly prevalent in individuals with other neurodevelopmental disorders, such as Attention Deficit Hyperactivity Disorder, Autism Spectrum Disorders, Dyslexia, and Sensory Processing Disorder. The American Academy of Audiology notes that APD is diagnosed by difficulties in one or more auditory processes known to reflect the function of the central auditory nervo ... [...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] |
Phonemic Awareness
Phonemic awareness is a subset of phonological awareness in which listeners are able to hear, identify and manipulate phonemes, the smallest mental units of sound that help to differentiate units of meaning (morphemes). Separating the spoken word "cat" into three distinct phonemes, , , and , requires phonemic awareness. The National Reading Panel has found that phonemic awareness improves children's word reading and reading comprehension and helps children learn to spell. Phonemic awareness is the basis for learning phonics. Phonemic awareness and phonological awareness are often confused since they are interdependent. Phonemic awareness is the ability to hear and manipulate individual phonemes. Phonological awareness includes this ability, but it also includes the ability to hear and manipulate larger units of sound, such as onsets and rimes and syllables. Impact on reading development Studies by Vickie Snider have shown that phonemic awareness has a direct correlation with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phonics
Phonics is a method for teaching people how to Reading, read and write an alphabetic language (such as English alphabet, English, Arabic alphabet, Arabic or Russian alphabet, Russian). It is done by demonstrating the relationship between the sounds of the spoken language (phonemes), and the letters or groups of letters (graphemes) or syllables of the written language. In English, this is also known as the alphabetic principle or the ''Alphabetic code''. Phonics is taught using a variety of approaches, for example: a) learning ''individual'' sounds and their corresponding letters (e.g. the word cat has three letters and three sounds c - a - t, (in International Phonetic Alphabet, IPA: , , ), whereas the word flower has six letters but four sounds: f - l - ow - er, (IPA , , , ), or b) learning the sounds of letters or groups of letters, at the word level, such as similar sounds (e.g., cat, can, call), or Syllable#Rime, rimes (e.g., hat, mat and sat have the same rime, "at"), or ... [...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] |
Pseudoword
A pseudoword is a unit of speech or text that appears to be an actual word in a certain language, while in fact it has no meaning in the lexicon. It is a kind of non-lexical vocable. A pseudoword is a specific type of non-word composed of a combination of phonemes which conform to the language's phonotactic rules. Such words without a meaning in a certain language or no occurrence in any text corpus or dictionary can be the result of (the interpretation of) a truly random signal, but there will often be an underlying deterministic source, as is the case for: *nonsense words (e.g. ''jabberwocky'') *nonce words (e.g. ''galumph'') *ghost words (e.g. ''dord'') *cyphers *typos A string of nonsensical words may be described as gibberish. Word salad, in contrast, may contain legible and intelligible words but without semantic or syntactic correlation or coherence. Characteristics Within linguistics, a pseudoword is defined specifically as respecting the phonotactic restrictions of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reading (process)
Reading is the process of taking in the sense or meaning of letters, symbols, etc., especially by sight or touch. For educators and researchers, reading is a multifaceted process involving such areas as word recognition, orthography (spelling), alphabetics, phonics, phonemic awareness, vocabulary, comprehension, fluency, and motivation. Other types of reading and writing, such as pictograms (e.g., a hazard symbol and an emoji), are not based on speech-based writing systems. The common link is the interpretation of symbols to extract the meaning from the visual notations or tactile signals (as in the case of Braille). Overview Reading is typically an individual activity, done silently, although on occasion a person reads out loud for other listeners; or reads aloud for one's own use, for better comprehension. Before the reintroduction of separated text (spaces between words) in the late Middle Ages, the ability to read silently was considered rather remarkable. Major pred ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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