Oblique effect in visual mismatch negativity

Takács, Endre; Sulykos, István; Czigler, István; Barkaszi, Irén; Balázs, László

doi:10.3389/fnhum.2013.00591

Cited by 25 publications

(34 citation statements)

References 70 publications

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“…To explore whether deficits are present in the processing of elementary visual features here we used rare changes in orientation of Gabor patches to elicit MMN. Prior studies reported reliable vMMN response to orientation deviants (Astikainen et al, 2004;Kimura et al, 2009;Czigler and Sulykos, 2010;Takacs et al, 2013) in healthy subjects, therefore we used a simple oddball paradigm where we varied the probabilities of Gabor patches with different orientations. Our hypothesis was that the mismatch response to rare orientation changes will be reduced in the patients compared to controls.…”

Section: Previous Results In Mmn Research-hypothesesmentioning

confidence: 99%

Elementary sensory deficits in schizophrenia indexed by impaired visual mismatch negativity

Farkas¹,

Stefanics²,

Marosi³

et al. 2015

Schizophrenia Research

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Section: Previous Results In Mmn Research-hypothesesmentioning

confidence: 99%

Elementary sensory deficits in schizophrenia indexed by impaired visual mismatch negativity

Farkas¹,

Stefanics²,

Marosi³

et al. 2015

Schizophrenia Research

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“…Takács et al, 2013), i.e., the possibility that the sensitivity to oblique lines in forward and backward directions (/ and \) is different. This possibility has some support from the larger N1 to the N stimuli over the right posterior locations.…”

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confidence: 99%

Asymmetric effect of automatic deviant detection: The effect of familiarity in visual mismatch negativity

2015

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Cite this article as: István Sulykos, Krisztina Kecskés-Kovács, István Czigler, Asymmetric effect of automatic deviant detection: The effect of familiarity in visual mismatch negativity, Brain Research, http://dx.doi.org/ 10.1016/j.brainres. 2015.02.035 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractThe visual mismatch negativity (vMMN) component is regarded as a prediction error signal elicited by events violating the sequential regularities of environmental stimulation. The aim of the study was to investigate the effect of familiarity on the vMMN. Stimuli were patterns comprised of familiar (N) or unfamiliar (ɂ) letters. In a passive oddball paradigm, letters (N and ɂ) were presented as either standard or deviant in separate conditions. VMMNs emerged in both conditions; peak latency of vMMN was shorter to the ɂ deviant compared to the vMMN elicited by the N deviant.To test the orientation-specific effect of the oblique lines on the vMMN, we introduced a control experiment. In the control experiment, the patterns were constructed solely from oblique lines, identical to the oblique lines of the N and ɂ stimuli. Contrary to the first experiment, there was no significant difference between the vMNNs elicited by the two orientations. Therefore, the differences in vMMNs to ɂ and N deviants are not attributable to the physical difference between the ɂ and N stimuli. Consequently, the vMMN is sensitive to the familiarity of the stimuli.

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“…www.frontiersin.org January 2015 | Volume 8 | Article 1074 | 2 Takács et al (2013) investigated electrophysiological correlates of the oblique effect under unattended and attended conditions using an oddball design. The oblique effect refers to that the perceptual system is more sensitive to cardinal (vertical and horizontal) than oblique line orientations.…”

Section: Frontiers In Human Neurosciencementioning

confidence: 99%

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

2015

Frontiers Research Topics

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Our visual field contains much more information at every moment than we can attend and consciously process. How is the multitude of unattended events processed in the brain and selected for the further attentive evaluation? Current theories of visual change detection emphasize the importance of conscious attention to detect changes in the visual environment. However, an increasing body of studies shows that the human brain is capable of detecting even small visual changes if such changes violate non-conscious probabilistic expectations based on prior experiences. In other words, our brain automatically represents environmental statistical regularities.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. Information about both simple and more complex characteristics of stimuli is rapidly processed and stored by the brain in the absence of conscious attention.In this research topic we aim to present vMMN as a prediction error signal and put it in context of the hierarchical predictive coding framework. Predictive coding theories account for phenomena such as MMN and repetition suppression, and place them in a broader context of a general theory of cortical responses (Friston, 2005(Friston, , 2010. 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.A wide range of vMMN studies has been presented in seventeen articles 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.Four articles investigated the relationship between attention and vMMN. Kremláček et al. (2013) presented subjects with radial motion stimuli in the periphery of the visual field using an oddball paradigm and manipulated the attentional load by varying the difficulty of a central distractor tasks. They aimed to manipulate the amount of available attentional resources that might have been involuntarily captured by the vMMN-evoking stimuli presented in the periphery outside of the attentional focus. The distractor task had three difficulty levels: (1) a central fixation (easy), and a target number detection task with (2) one target number (moderate), and (3) three target numbers (diffi...

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Oblique effect in visual mismatch negativity

Cited by 25 publications

References 70 publications

Elementary sensory deficits in schizophrenia indexed by impaired visual mismatch negativity

Elementary sensory deficits in schizophrenia indexed by impaired visual mismatch negativity

Asymmetric effect of automatic deviant detection: The effect of familiarity in visual mismatch negativity

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

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