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Echolalia
Echolalia is the unsolicited repetition of vocalizations made by another person (when repeated by the same person, it is called palilalia). In its profound form it is automatic and effortless. It is one of the echophenomena, closely related to echopraxia, the automatic repetition of movements made by another person; both are "subsets of imitative behavior" whereby sounds or actions are imitated "without explicit awareness". Echolalia may be an immediate reaction to a stimulus or may be delayed. Echolalia occurs in many cases of autism spectrum disorder and Tourette syndrome. It may also occur in several other neurological conditions such as some forms of dementia or stroke-related aphasia. The word "echolalia" is derived from the Greek (''ēchō''), meaning "echo" or "to repeat", and (''laliá'') meaning "speech" or "talk" (of onomatopoeic origin, from the verb (''laléo''), meaning "to talk"). Signs and symptoms Echolalia can be categorized as either immediate (occurr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speech Repetition
250px, Children copy with their own mouths the words spoken by the mouths of those around them. That enables them to learn the pronunciation of words not already in their vocabulary. Speech repetition occurs when individuals speech, speak the sounds that they have heard another person Speech production, pronounce or say. In other words, it is the saying by one individual of the spoken vocalizations made by another individual. Speech repetition requires the person repeating the utterance to have the ability to map the sounds that they hear from the other person's oral pronunciation to similar places and manners of articulation in their own vocal tract. Such speech input/output imitation often occurs independently of speech comprehension such as in speech shadowing in which people automatically say words heard in earphones, and the pathological condition of echolalia in which people reflexively repeat overheard words. That links to speech repetition of words being separate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catatonia
Catatonia is a complex neuropsychiatric behavioral syndrome that is characterized by abnormal movements, immobility, abnormal behaviors, and withdrawal. The onset of catatonia can be acute or subtle and symptoms can wax, wane, or change during episodes. There are several subtypes of catatonia: akinetic catatonia, excited catatonia, malignant catatonia, delirious mania, and self-injurious behaviors in autism. Although catatonia has historically been related to schizophrenia (catatonic schizophrenia), catatonia is most often seen in mood disorders. It is now known that catatonic symptoms are nonspecific and may be observed in other mental, neurological, and medical conditions. Catatonia is not a stand-alone diagnosis (although some experts disagree), and the term is used to describe a feature of the underlying disorder. Recognizing and treating catatonia is very important as failure to do so can lead to poor outcomes and can be potentially fatal. Treatment with benzodiazepines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palilalia
Palilalia (from the Greek πάλιν (''pálin'') meaning "again" and λαλιά (''laliá'') meaning "speech" or "to talk"), a complex tic, is a language disorder characterized by the involuntary repetition of syllables, words, or phrases. It has features resembling other complex tics such as echolalia or coprolalia, but, unlike other aphasias, palilalia is based upon contextually correct speech. It was originally described by Alexandre-Achille Souques in a patient with stroke that resulted in left-side hemiplegia, although a condition described as auto-echolalia in 1899 by Édouard Brissaud may have been the same condition. Classification Palilalia is considered an aphasia, a disorder of language, and is not to be confused with speech disorders, as there is no difficulty in the formation of internal speech. Palilalia is similar to speech disorders such as stuttering or cluttering, as it tends to express itself only in spontaneous speech, such as answering basic questions, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echopraxia
Echopraxia (also known as echokinesis) is the involuntary repetition or imitation of another person's actions. Similar to echolalia, the involuntary repetition of sounds and language, it is one of the echophenomena ("automatic imitative actions without explicit awareness"). It has long been recognized as a core feature of Tourette syndrome, and is considered a complex tic, but it also occurs in autism spectrum disorders, schizophrenia and catatonia, aphasia, and disorders involving the startle reflex such as latah. Echopraxia has also been observed in individuals with epilepsy, dementia and autoimmune disorders; the causes of and the link between echopraxia and these disorders is undetermined. The etymology of the term is from Ancient Greek: " ἠχώ (ēkhō) from ἠχή (ēkhē "sound") and " πρᾶξις (praksis, "action, activity, practice)". Characteristics Echopraxia is the involuntary mirroring of an observed action. Imitated actions can range from simple motor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transcortical Sensory Aphasia
Transcortical sensory aphasia (TSA) is a kind of aphasia that involves damage to specific areas of the temporal lobe of the brain, resulting in symptoms such as poor auditory comprehension, relatively intact repetition, and fluent speech with semantic paraphasias present. TSA is a fluent aphasia similar to Wernicke's aphasia (receptive aphasia), with the exception of a strong ability to repeat words and phrases. The person may repeat questions rather than answer them ("echolalia"). In all of these ways, TSA is very similar to a more commonly known language disorder, receptive aphasia. However, transcortical sensory aphasia differs from receptive aphasia in that patients still have intact repetition and exhibit echolalia, or the compulsive repetition of words. Transcortical sensory aphasia cannot be diagnosed through brain imaging techniques such as functional magnetic resonance imaging (fMRI), as the results are often difficult to interpret. Therefore, clinicians rely on language a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echophenomenon
Echophenomenon (also known as echo phenomenon; from Ancient Greek ἠχώ (ēkhṓ) " echo, reflected sound") is "automatic imitative actions without explicit awareness" or pathological repetitions of external stimuli or activities, actions, sounds, or phrases, indicative of an underlying disorder. The echophenomena include repetition: * echolalia (syn. echophrasia) – of vocalizations (the most common of the echophenomena) ** echopalilalia – of words * echopraxia (syn. echokinesis, echomatism) – of actions, movements * echopathy – of actions or speech * echoplasia – physically or mentally, tracing contours of objects * echolalioplasia – involving sign language, described in one individual with Tourette syndrome (). References {{Reflist Tourette syndrome Schizophrenia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autism Spectrum Disorder
The autism spectrum, often referred to as just autism or in the context of a professional diagnosis autism spectrum disorder (ASD) or autism spectrum condition (ASC), is a neurodevelopmental condition (or conditions) characterized by difficulties in social interaction, verbal and nonverbal communication, and the presence of repetitive behavior and restricted interests. Other common signs include unusual responses to sensory stimuli. Autism is generally understood as a '' spectrum disorder'', which means that it can manifest differently in each person: any given autistic individual is likely to show some, but not all, of the characteristics associated with it, and the person may exhibit them to varying degrees. Some autistic people remain nonspeaking over the course of their lifespan, while others have relatively unimpaired spoken language. There is large variation in the level of support people require, and the same person may present differently at varying times. Historicall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echophenomenon
Echophenomenon (also known as echo phenomenon; from Ancient Greek ἠχώ (ēkhṓ) " echo, reflected sound") is "automatic imitative actions without explicit awareness" or pathological repetitions of external stimuli or activities, actions, sounds, or phrases, indicative of an underlying disorder. The echophenomena include repetition: * echolalia (syn. echophrasia) – of vocalizations (the most common of the echophenomena) ** echopalilalia – of words * echopraxia (syn. echokinesis, echomatism) – of actions, movements * echopathy – of actions or speech * echoplasia – physically or mentally, tracing contours of objects * echolalioplasia – involving sign language, described in one individual with Tourette syndrome (). References {{Reflist Tourette syndrome Schizophrenia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mirror Neuron System
A mirror neuron is a neuron that fires both when an animal acts and when the animal observes the same action performed by another. Thus, the neuron "mirrors" the behavior of the other, as though the observer were itself acting. Such neurons have been directly observed in human and primate species, and in birds. In humans, brain activity consistent with that of mirror neurons has been found in the premotor cortex, the supplementary motor area, the primary somatosensory cortex, and the inferior parietal cortex. The function of the mirror system in humans is a subject of much speculation. Birds have been shown to have imitative resonance behaviors and neurological evidence suggests the presence of some form of mirroring system. To date, no widely accepted neural or computational models have been put forward to describe how mirror neuron activity supports cognitive functions. The subject of mirror neurons continues to generate intense debate. In 2014, Philosophical Transactions o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tourette Syndrome
Tourette syndrome or Tourette's syndrome (abbreviated as TS or Tourette's) is a common neurodevelopmental disorder that begins in childhood or adolescence. It is characterized by multiple movement (motor) tics and at least one vocal (phonic) tic. Common tics are blinking, coughing, throat clearing, sniffing, and facial movements. These are typically preceded by an unwanted urge or sensation in the affected muscles known as a premonitory urge, can sometimes be suppressed temporarily, and characteristically change in location, strength, and frequency. Tourette's is at the more severe end of a spectrum of tic disorders. The tics often go unnoticed by casual observers. Tourette's was once regarded as a rare and bizarre syndrome and has popularly been associated with coprolalia (the utterance of obscene words or socially inappropriate and derogatory remarks). It is no longer considered rare; about 1% of school-age children and adolescents are estimated to have Tourette's, and c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mirror Neurons
A mirror neuron is a neuron that fires both when an animal acts and when the animal observes the same action performed by another. Thus, the neuron "mirrors" the behavior of the other, as though the observer were itself acting. Such neurons have been directly observed in human and primate species, and in birds. In humans, brain activity consistent with that of mirror neurons has been found in the premotor cortex, the supplementary motor area, the primary somatosensory cortex, and the inferior parietal cortex. The function of the mirror system in humans is a subject of much speculation. Birds have been shown to have imitative resonance behaviors and neurological evidence suggests the presence of some form of mirroring system. To date, no widely accepted neural or computational models have been put forward to describe how mirror neuron activity supports cognitive functions. The subject of mirror neurons continues to generate intense debate. In 2014, Philosophical Transacti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Progressive Supranuclear Palsy
Progressive supranuclear palsy (PSP) is a late-onset degenerative disease involving the gradual deterioration and death of specific volumes of the brain. The condition leads to symptoms including loss of balance, slowing of movement, difficulty moving the eyes, and cognitive impairment. PSP may be mistaken for other neurodegenerative diseases such as Parkinson's, frontotemporal dementia and Alzheimer's. The cause of the condition is uncertain, but involves accumulation of tau protein within the brain. Medications such as levodopa and amantadine may be useful in some cases. PSP affects about six people per 100,000. The first symptoms typically occur at 60–70 years of age. Males are slightly more likely to be affected than females. No association has been found between PSP and any particular race, location, or occupation. Signs and symptoms The initial symptoms in two-thirds of cases are loss of balance, lunging forward when mobilizing, fast walking, bumping into objects or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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