Mismatch negativity vs. mismatch response?

What is mismatch negativity response?

Mismatch negativity (MMN) is a negative component of the event-related response in an EEG signal, elicited by any perceptible change in some repetitive aspect of an auditory stimulation (e.g., stimulus pitch, stimulus duration).

How is mismatch negativity measured?

Mismatch negativity (MMN) is measured by subtracting the averaged response to a set of standard stimuli from the averaged response to rarer deviant stimuli, and taking the amplitude of this difference wave in a given time window.

What is mismatch negativity schizophrenia?

Abstract. Background: Mismatch negativity (MMN) is an auditory event-related potential that provides an index of automatic context-dependent information processing and auditory sensory memory. Many studies have reported abnormalities in the generation of MMN in schizophrenia.

What is the difference between MMN and P300?

MMN was defined as the maximum negative wave 100-250 ms after stimuli presentation, and P300 was defined as the maximum positive wave 300-600 ms after stimuli presentation.

What is the N400 effect?

The N400 wave is an event-related brain potential (ERP) measured using electroencephalography (EEG). N400 refers to a negativity peaking at about 400 milliseconds after stimulus onset. It has been used to investigate semantic processing, which may be dysfunctional in schizophrenia.

What is late discriminative negativity?

Late Discriminative Negativity (LDN)

Besides MMN, also a second negativity that is related to changes in auditory stimuli can be elicited in a passive oddball experiment by deviant stimuli. This negativity was first reported in children by Korpilahti et al. [1995], who called it the late MMN.

What does the term P300 refer to?

The P300 wave is an event-related brain potential measured using electroencephalography (EEG). P300 refers to a spike in activity approximately 300ms following presentation of the target stimulus, which is alternated with standard stimuli to create an ‘oddball’ paradigm, which is most commonly auditory.

What is ERN in psychology?

The error-related negativity (ERN) is an electrophysiological marker thought to reflect changes in dopamine when participants make errors in cognitive tasks. Our computational model further predicts that larger ERNs should be associated with better learning to avoid maladaptive responses.

What is sensory gating?

Sensory gating is a phenomenon in which the brain shows reduced evoked response to repeated stimuli (e.g., Boutros and Belger, 1999, Freedman et al., 1987, Freedman et al., 1996). It is typically explored using a conditioning-testing paradigm (or paired-stimulus paradigm) during an electroencephalogram (EEG) recording.

What is N100 ERP?

N100 is an ERP component that is frequently observed across a wide range of sensory, motor, cognitive, and behavioral tasks. The functional implications of N100 were commonly considered in the context of these specific tasks.

What is P1 in ERP?

The P1 component is a positive ERP component that occurs approximately 100 ms after stimulus presentation. The P1 component appears to be sensitive to faces, as the amplitude for this component is significantly larger for face stimuli than most other types of stimuli (Itier & Taylor, 2004d).