About: Mismatch negativity

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The mismatch negativity (MMN) or mismatch field (MMF) is a component of the event-related potential (ERP) to an odd stimulus in a sequence of stimuli. It arises from electrical activity in the brain and is studied within the field of cognitive neuroscience and psychology. It can occur in any sensory system, but has most frequently been studied for hearing and for vision, in which case it is abbreviated to vMMN. The (v)MMN occurs after an infrequent change in a repetitive sequence of stimuli (sometimes the entire sequence is called an oddball sequence.) For example, a rare deviant (d) stimulus can be interspersed among a series of frequent standard (s) stimuli (e.g., s s s s s s s s s d s s s s s s d s s s d s s s s...). In hearing, a deviant sound can differ from the standards in one or mo

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rdfs:label	Potencial de disparidad (es) Mismatch negativity (it) Négativité de discordance (fr) Mismatch negativity (en) Mismatch negativity (nl) Fala niezgodności (pl) Негативность рассогласования (ru)
rdfs:comment	En neurosciences, la négativité de discordance (en anglais MMN ou mismatch negativity) est une onde cérébrale observée en EEG qui traduit un changement du stimulus, par exemple lorsqu'un nouveau stimulus apparait dans une séquence de stimuli identiques. Elle a été étudiée dans l'autisme où elle est altérée (plus précoce chez l'autiste, ce qui pourrait expliquer leur intolérance au changement)[réf. nécessaire]. (fr) Негативность рассогласования (сокр. НР; англ. Mismatch Negativity, MMN) — термин когнитивной нейробиологии и психофизиологии. НР представляет собой разновидность вызванных потенциалов, связанных с событием. Данный феномен был открыт Ристо Наатаненом в 1978 году. (ru) El potencial de disparidad (en inglés Mismatch negativity, MMN) provee una medición fisiológica de la información sensorial procesada por el cerebro, suele aparecer como a los 100 ms y termina como a los 250 ms; es una respuesta eléctrica cerebral negativa de los potenciales relacionados con eventos, que se presenta al haber un cambio discriminable en una estimulación auditiva repetitiva y que puede ser iniciada aun a falta de atención por parte del sujeto que está siendo sometido a prueba. Se han descrito dos subcomponentes de la MMN: (es) The mismatch negativity (MMN) or mismatch field (MMF) is a component of the event-related potential (ERP) to an odd stimulus in a sequence of stimuli. It arises from electrical activity in the brain and is studied within the field of cognitive neuroscience and psychology. It can occur in any sensory system, but has most frequently been studied for hearing and for vision, in which case it is abbreviated to vMMN. The (v)MMN occurs after an infrequent change in a repetitive sequence of stimuli (sometimes the entire sequence is called an oddball sequence.) For example, a rare deviant (d) stimulus can be interspersed among a series of frequent standard (s) stimuli (e.g., s s s s s s s s s d s s s s s s d s s s d s s s s...). In hearing, a deviant sound can differ from the standards in one or mo (en) La mismatch negativity (MMN) oppure mismatch field (MMF), chiamata anche negatività da discordanza, è una componente dell'onda suscitata da un qualsiasi potenziale evento-correlato (in inglese event-related potential, con acronimo "ERP") in risposta a uno stimolo discordante in una sequenza di stimoli. Quest'onda emerge dall'attività elettrica nel cervello e viene studiata all'interno dell'ambito delle neuroscienze cognitive e della psicologia. Possono essere registrate da qualsiasi sistema sensoriale, ma sono state studiate più frequentemente per l'udito e per la visione. Nel caso degli stimoli uditivi, la MMN si verifica dopo un cambiamento poco frequente (10-20% di suoni lievemente discordanti per frequenza rispetto allo stimolo semi-costante) una sequenza ripetitiva di suoni (a volte l (it) Fala niezgodności (MMN, ang. mismatch negativity) – egzogenny potencjał wywołany topografią czołowo-centralną. Fala niezgodności pojawia się za każdym razem, kiedy pośród docierających bodźców wkrada się tak zwany . Fala niezgodności może pojawić się również w przypadkach kiedy bodźce różnią się częstotliwością występowania, natężeniem czy czasem trwania. Pojawia się ona po upływie 50 ms od wystąpienia dewianta, a jej największą amplitudę obserwuje się po upływie od 100 ms do 200 ms. Przeczytaj ostrzeżenie dotyczące informacji medycznych i pokrewnych zamieszczonych w Wikipedii. (pl) Mismatch negavitity (afgekort MMN) is een component van de event-related potential (ERP). De magnetische variant van de MMN heet (MMF). Het is een negatieve component die op ongeveer 150-200 ms optreedt als reactie op een infrequente afwijking in een bepaald fysisch kenmerk van een auditieve prikkel (zoals een toon) tegen een achtergrond van steeds herhaalde prikkels. Deze afwijking kan betrekking hebben op toonhoogte, duur of intensiteit. De MMN is het duidelijkst zichtbaar boven de frontocentrale schedel, en komt voort uit de primaire en secundaire gebieden van de gehoorschors. De MMN wordt gezien als een automatische of onbewuste oriëntatie van de hersenen op geluidsprikkels die afwijken van een bepaald neuronaal model. Het neuronaal model is onderdeel van het auditieve sensorische geh (nl)
dcterms:subject	Cognitive neuroscience Neurolinguistics Dyslexia research Electroencephalography Evoked potentials Hearing Neuropsychology Audiology
Wikipage page ID	6240439 (xsd:integer)
Wikipage revision ID	1078161916 (xsd:integer)
Link from a Wikipage to another Wikipage	Psychology Electroencephalography Cognitive neuroscience Neurolinguistics Dyslexia research Visual perception Early left anterior negativity Inferior frontal gyrus Insular cortex Electroencephalography Error-related negativity P300 (neuroscience) Cognitive neuroscience Brain Contingent negative variation The Netherlands Bereitschaftspotential Evoked potentials Phonology Pitch (music) C1 and P1 (neuroscience) Late positive component Lateralized readiness potential Hearing Event-related potential Difference due to memory Visual cortex Magnetoencephalography Hearing (sense) Neuropsychology Audiology Syntax Auditory cortex Netherlands Organisation for Applied Scientific Research Oddball paradigm Loudness Risto Näätänen Somatosensory evoked potential Sensory system Neurolinguistics P3b N200 (neuroscience) N170 N2pc N400 (neuroscience) P200 P3a P600 (neuroscience) Visual N1 N100 (neuroscience)
Link from a Wikipage to an external page	https://web.archive.org/web/20041012072108/http:/www.cbru.helsinki.fi/mismatch_negativity/mmn.html
sameAs	Mismatch negativity Mismatch negativity Mismatch negativity Mismatch negativity Mismatch negativity Mismatch negativity Mismatch negativity Mismatch negativity Mismatch negativity Mismatch negativity Mismatch negativity Mismatch negativity Mismatch negativity Mismatch negativity
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