scholarly journals Abnormal ERPs and Brain Dynamics Mediate Basic Self Disturbance in Schizophrenia: A Review of EEG and MEG Studies

2021 ◽  
Vol 12 ◽  
Author(s):  
Arthur Hamilton ◽  
Georg Northoff

Background: Interest in disordered sense of self in schizophrenia has recently re-emerged in the literature. It has been proposed that there is a basic self disturbance, underlying the diagnostic symptoms of schizophrenia, in which the person's sense of being a bounded individual continuous through time loses stability. This disturbance has been documented phenomenologically and at the level of cognitive tasks. However, the neural correlates of basic self disorder in schizophrenia are poorly understood.Methods: A search of PubMed was used to identify studies on self and schizophrenia that reported EEG or MEG data.Results: Thirty-three studies were identified, 32 using EEG and one using MEG. Their operationalizations of the self were divided into six paradigms: self-monitoring for errors, proprioception, self-other integration, self-referential processing, aberrant salience, and source monitoring. Participants with schizophrenia were less accurate on self-referential processing tasks and had slower response times across most studies. Event-related potential amplitudes differed across many early and late components, with reduced N100 suppression in source monitoring paradigms being the most replicated finding. Several studies found differences in one or more frequency band, but no coherent overall finding emerged in this area. Various other measures of brain dynamics also showed differences in single studies. Only some of the study designs were adequate to establish a causal relationship between the self and EEG or MEG measures.Conclusion: The broad range of changes suggests a global self disturbance at the neuronal level, possibly carried over from the resting state. Further studies that successfully isolate self-related effects are warranted to better understand the temporal-dynamic and spatial-topographic basis of self disorder and its relationship to basic self disturbance on the phenomenological level.

Author(s):  
Anna Żochowska ◽  
Maria M Nowicka ◽  
Michał J Wójcik ◽  
Anna Nowicka

Abstract The image of one’s own face is a particularly distinctive feature of the self. The self-face differs from other faces not only in respect of its familiarity but also in respect of its subjective emotional significance and saliency. The current study aimed at elucidating similarities/dissimilarities between processing of one’s own face and emotional faces: happy faces (based on the self-positive bias) and fearful faces (because of their high perceptual saliency, a feature shared with self-face). Electroencephalogram data were collected in the group of 30 participants who performed a simple detection task. Event-related potential analyses indicated significantly increased P3 and late positive potential amplitudes to the self-face in comparison to all other faces: fearful, happy and neutral. Permutation tests confirmed the differences between the self-face and all three types of other faces for numerous electrode sites and in broad time windows. Representational similarity analysis, in turn, revealed distinct processing of the self-face and did not provide any evidence in favour of similarities between the self-face and emotional (either negative or positive) faces. These findings strongly suggest that the self-face processing do not resemble those of emotional faces, thus implying that prioritized self-referential processing is driven by the subjective relevance of one’s own face.


2019 ◽  
Author(s):  
Sucharit Katyal ◽  
Greg Hajcak ◽  
Tamara Flora ◽  
Austin Bartlett ◽  
philippe goldin

Contemplative practices are thought to modify one’s experience of self and fundamentally change self-referential processing. However, few studies have examined the effect of long-term meditation training on brain correlates of self-referential processing. Here we used the self-referential encoding task (SRET) to examine event-related potentials (ERP) during assessment of positive and negative self-views in long-term meditators versus demographically-matched meditation-naïve control participants. Compared to controls, meditators endorsed significantly more positive and less negative words as self-referential. We also found a between-group difference in the early component of the late-positive-potential (LPP) of the ERP characterised by a higher response to negative versus positive words in controls and no difference in meditators. These findings suggest that long-term meditation training alters self-referential processing towards a more adaptive view of self and neural equivalence towards positive and negative self-views. Such changes may be one aspect of how meditation modifies the relationship to self.


Author(s):  
David H. J. Larmour
Keyword(s):  

Juvenalian satire writes specularity, firstly, by mirroring its own constitutive elements and discursive procedures, and, secondly, through its preoccupation with gazing at others and the self. The roving satirist-narrator, who resembles Kristeva’s ‘deject’ and Poe’s ‘Man of the Crowd’, inhabits the paradoxical space of Maingueneau’s paratopia within the specular city of Rome. As a specular text, Juvenal’s collection strives for coherence through various devices of doubling, repetition, and mirroring (linguistic, rhetorical, and thematic); yet in this cityscape the search for a unified sense of self, and an accompanying topographical wholeness, is continually frustrated, as the satirist—along with us, the spectators accompanying him—is confronted by human and architectural embodiments of ambiguity, transgression, and the pernicious mixing of categories, including Umbricius at the Porta Capena (3.12–20 and 318–22), Otho with his mirror (2.99–109), and Gracchus’ appearance as a retiarius in the arena (2.143–8 and 8.200–10).


2007 ◽  
Vol 345-346 ◽  
pp. 873-876
Author(s):  
Jin Oh Lee ◽  
Min Soo Kang ◽  
Jeong Hun Shin ◽  
Kil Sung Lee

The pedometer, an objective assessment of measuring step counts, has often been used to motivate individuals to increase their ambulatory physical activity. Minimal contact pedometer-based intervention (MCPBI) is gaining in popularity because they are simple and inexpensive. MCPBI is based on self-monitoring by the participants; however, one limitation of using the self-monitoring approach was the participant attrition (i.e., dropout), which makes it difficult to achieve the successful intervention. A new algorithm for pedometer-based intervention, the systematic-monitoring based on conditional feedback, was designed to increase awareness and allow participants to more successfully attain their step goals. Thus, the purpose of this study was to examine the effect of the systematic-monitoring based on conditional feedback algorithm on 10,000 step goal attainments. The study result can be used to design more comprehensive pedometer-based physical activity interventions to increase individuals’ overall health status.


2013 ◽  
Vol 2013 (1) ◽  
Author(s):  
George Pattison

AbstractNoting Heidegger’s critique of Kierkegaard’s way of relating time and eternity, the paper offers an alternative reading of Kierkegaard that suggests Heidegger has overlooked crucial elements in the Kierkegaardian account. Gabriel Marcel and Sharon Krishek are used to counter Heidegger’s minimizing of the deaths of others and to show how the deaths of others may become integral to our sense of self. This prepares the way for revisiting Kierkegaard’s discourse on the work of love in remembering the dead. Against the criticism that this reveals the absence of the other in Kierkegaardian love, the paper argues that, on the contrary, it shows how Kierkegaard conceives the self as inseparable from the core relationships of love that, despite of death, constitute it as the self that it is.


1991 ◽  
Vol 73 (3_suppl) ◽  
pp. 1244-1246 ◽  
Author(s):  
M. A. Persinger ◽  
Katherine Makarec

28 men and 32 women were given Vingiano's Hemisphericity Questionnaire and the Coopersmith Self-esteem Inventory. People who reported the greatest numbers of right hemispheric indicators displayed the lowest self-esteem; the correlations were moderately strong ( r>.50) for both men and women. These results support the hypothesis that the sense of self is primarily a linguistic, left-hemispheric phenomenon and that a developmental history of frequent intrusion from right-hemispheric processes can infuse the self-concept with negative affect.


Author(s):  
Judson B. Murray

Confucian mysticism is a subfield in academic areas of study including Chinese thought, Chinese religions, Confucian studies, and comparative mysticism. Important topics examined in this subfield include, first, a view of the human self that is fundamentally relational, both in an interpersonal sense and because Confucians presuppose various correlations and an integration between, on the one hand, the matter–energy, capacities, processes, and activities comprising the self and, on the other, the elements, forces, patterns, and processes of the world it inhabits. One paradigmatic way Confucians conceptualize the interrelation between the self and the cosmos is their idea and ideal of the “unity of Heaven and humanity.” The Confucian mystical self, provided failings such as unbalanced emotions, selfish desires, and self-centeredness are effectively curtailed, contributes vitally to, because of its profound reverence for life, the generative and life-sustaining process of change that pervades and animates the cosmos. Second, practitioners use various techniques of religious praxis in combination to form multifaceted training regimens aimed at self-cultivation and self-transformation. Examples include a form of meditation called “quiet-sitting,” rituals, textual study, “investigating things,” self-examination and self-monitoring, filial piety, and “reverent attentiveness.” Third, training in these practices can achieve the different mystical aims, experiences, and transformations they seek, all of which relate to the overarching ideal of the unity of Heaven and humanity. These objectives, broadly speaking, include self-understanding, accurately grasping the “principles” of things and affairs, effortless moral virtuosity, “forming one body with all things” (and other types of Confucian mystical union), and exemplifying “sincerity.” Accomplishing them collapses the conventional divide separating several specious dichotomies, such as thought and action, self and other, humankind and nature, internal and external, the subjective and the objective, and moral ought and is. Fourth, the influence that precedent and tradition exert in Confucianism has prompted scholars to devote attention both to notable continuities and to intriguing innovations in comparing ancient mystical ideas, practices, experiences, and aims to later expressions and elaborations of them. At present, much of the scholarship on Confucian mysticism contributes to efforts attempting to provide rich and nuanced analyses of the tradition’s core doctrines, practices, experiences, and ethical and religious aims, by viewing these subjects through the lens of Confucianism’s mystical and spiritual dimensions. Less scholarly attention has been devoted to identifying and explicating the possible contributions that studying Confucian mysticism can make to the scholarship on theories of mysticism and comparative mysticism. Scholars of mysticism have not yet availed themselves of the wealth of data, the possible additional perspectives on contested issues, and the new trajectories for future research that Confucianism offers to these fields. Also, few studies employ the definitions, categories, and theories that have been developed in the contemporary study of mysticism as a methodology for studying Confucian mysticism.


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