Mismatch Negativity

Mismatch Negativity
Author: Risto Näätänen
Publisher: Oxford University Press
Total Pages: 288
Release: 2019-03-19
Genre: Science
ISBN: 0191015148

The mismatch negativity (MMN) is the electrophysiological change-detection response of the brain. MMN is stimulated when there is any discernible change to a repetitive sequence of sound, occurring even in the absence of attention. MMN is an automatic response and causes an involuntary attentional shift, representing a function which is of vital significance. A parallel response can also be detected in the other sensory modalities- visual, somatosensory, and olfactory. MMN occurs in different species, and across the different developmental stages, from infancy to old age. Importantly, the MMN response is affected in different cognitive brain disorders, providing an index to the severity of the disorder and consequently, a guide to the effectiveness of different treatments. MMN has become extremely popular around the world for investigating a wide range of clinical populations. It is a versatile tool for studying perception, memory, and learning functions in both the healthy and dysfunctional brain. Furthermore, being elicited irrespective of attention, it is ideal for investigating inattentive participants, such as sleeping infants or patients in a coma, whose cognitive processes are otherwise hard to access. Written by pioneers and leading authorities in the subject, this book provides an introduction to MMN and its contribution within different clinical fields: developmental disorders, neurological disorders, psychiatric disorders, and aging.

Visual Mismatch Negativity (vMMN): a Prediction Error Signal in the Visual Modality

Visual Mismatch Negativity (vMMN): a Prediction Error Signal in the Visual Modality
Author: Gabor Stefanics
Publisher: Frontiers Media SA
Total Pages: 204
Release: 2015-06-04
Genre: Neurosciences. Biological psychiatry. Neuropsychiatry
ISBN: 2889195600

Current theories of visual change detection emphasize the importance of conscious attention to detect unexpected changes in the visual environment. However, an increasing body of studies shows that the human brain is capable of detecting even small visual changes, especially if such changes violate non-conscious probabilistic expectations based on repeating experiences. In other words, our brain automatically represents statistical regularities of our visual environmental. Since the discovery of the auditory mismatch negativity (MMN) event-related potential (ERP) component, the majority of research in the field has focused on auditory deviance detection. Such automatic change detection mechanisms operate in the visual modality too, as indicated by the visual mismatch negativity (vMMN) brain potential to rare changes. VMMN is typically elicited by stimuli with infrequent (deviant) features embedded in a stream of frequent (standard) stimuli, outside the focus of attention. In this research topic we aim to present vMMN as a prediction error signal. Predictive coding theories account for phenomena such as mismatch negativity and repetition suppression, and place them in a broader context of a general theory of cortical responses. A wide range of vMMN studies has been presented in this Research Topic. Twelve articles address roughly four general sub-themes including attention, language, face processing, and psychiatric disorders. Additionally, four articles focused on particular subjects such as the oblique effect, object formation, and development and time-frequency analysis of vMMN. Furthermore, a review paper presented vMMN in a hierarchical predictive coding framework. Each paper in this Research Topic is a valuable contribution to the field of automatic visual change detection and deepens our understanding of the short term plasticity underlying predictive processes of visual perceptual learning.

Detection of Change

Detection of Change
Author: John Polich
Publisher: Springer Science & Business Media
Total Pages: 193
Release: 2012-12-06
Genre: Medical
ISBN: 1461502942

This volume presents the first systematic overview of how event-related brain potential (ERP), cognitive electroencephalography (EEG), and functional magnetic imaging (fMRI) measures reflect the mental events arising from changes in sensory stimulation. The contents are fresh, the literature distillations highly informative, and the range of topics extremely useful for cognitive neuroscientists, psychologists, and researchers.

Recent Advances in Event-related Brain Potential Research

Recent Advances in Event-related Brain Potential Research
Author: Chikara Ogura
Publisher: Excerpta Medica
Total Pages: 1128
Release: 1996
Genre: Medical
ISBN:

Hardbound. The study of ERPs in human beings is an extremely important methodology for evaluating brain function, brain-behaviour relationships, impairments in cognitive functioning in psychiatric disorders and ERP-drug interaction.The advancements in ERP methodology have promoted the application of ERPs in both clinical and nonclinical settings. This volume aims to focus on issues that must be dealt with when ERPs are utilized in these situations, as well as to focus on issues related to the advancements of a theoretical understanding of the ERP phenomena, especially the impact of recent advancements in neuroscience on this particular field.This book will prove to be a useful reference work for those engaged in ERP research, and promote further development of this field.