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https://www.readbyqxmd.com/read/28327348/know-thy-agency-in-predictive-coding-meta-monitoring-over-forward-modeling
#1
Tomohisa Asai
Though the computation of agency is thought to be based on prediction error, it is important for us to grasp our own reliability of that detected error. Here, the current study shows that we have a meta-monitoring ability over our own forward model, where the accuracy of motor prediction and therefore of the felt agency are implicitly evaluated. Healthy participants (N=105) conducted a simple motor control task and SELF or OTHER visual feedback was given. The relationship between the accuracy and confidence in a mismatch detection task and in a self-other attribution task was examined...
March 16, 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/28318468/understanding-adolescent-personality-pathology-from-growth-trajectories-of-childhood-oddity
#2
Barbara De Clercq, Lize Verbeke, Elien De Caluwé, Tom Vercruysse, Joeri Hofmans
Research on developmental trajectories of early maladaptive features for understanding later personality disorders (PDs) is increasingly recognized as an important study area. The course of early odd features is highly relevant in this regard, as only a few researchers have addressed childhood oddity in the context of emerging PDs. Using latent growth modeling, the current study explores growth parameters of odd features in a mixed sample of Flemish community and referred children (N = 485) across three measurement waves with 1-year time intervals...
March 20, 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/28291035/borderline-or-schizotypal-differential-psychodynamic-assessment-in-severe-personality-disorders
#3
Laura VAN Riel, Theo J M Ingenhoven, Quin D VAN Dam, Marike G Polak, Meinte G Vollema, Anne E Willems, Han Berghuis, Harold VAN Megen
Considerable overlap in symptoms between patients with borderline personality disorder (BPD) and schizotypal personality disorder (STPD) complicates personality diagnostics. Yet very little is known about the level of psychodynamic functioning of both personality disorders. Psychodynamic assessment procedures may specify personality characteristics relevant for differential diagnosis and treatment planning. In this cross-sectional study we explored the differences and similarities in level of personality functioning and psychodynamic features of patients with severe BPD or STPD...
March 2017: Journal of Psychiatric Practice
https://www.readbyqxmd.com/read/28288547/neuropsychological-correlates-of-schizotypy-a-systematic-review-and-meta-analysis-of-cross-sectional-studies
#4
Sara Siddi, Donatella Rita Petretto, Antonio Preti
INTRODUCTION: Cognitive deficits can precede the onset of psychotic episodes and predict the onset of the illness in individuals with schizotypy traits. In some studies, high levels of schizotypy were associated with impairments in memory, attention, executive functions, and verbal fluency. This review provides a more comprehensive understanding of cognitive impairments related to schizoytpy. METHODS:  A systematic review of "schizotypy and neuropsychological measures" was conducted, and it retrieved 67 studies...
March 13, 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28288440/schizophrenia-spectrum-personality-disorders-in-psychometrically-identified-schizotypes-at-two-year-follow-up
#5
P Kevin Bolinskey, Elizabeth A Smith, Kelly M Schuder, Dianna Cooper-Bolinskey, Kevin R Myers, Daniel V Hudak, Alison V James, Helen K Hunter, Jonathan H Novi, Janice P Guidi, Yelena Gonzalez, Erin F McTiernan, Kaitlin M Arnold, Carina A Iati, Irving I Gottesman
Earlier (Bolinskey et al., 2015), we reported that psychometrically identified schizotypes displayed greater symptom levels and higher incidences of schizophrenia spectrum (schizotypal, schizoid, paranoid, and avoidant) personality disorders (PDs). In this study, 49 schizotypes and 39 matched controls participated in follow-up assessments after two years. Participants were previously identified as schizotypes or controls based on scores on the Chapman Psychosis Proneness Scales (CPPS), and were interviewed at baseline and follow-up with the Personality Disorder Interview for DSM-IV (PDI-IV)...
March 8, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28252597/-%C3%A2-verschroben%C3%A2-phenomenon-in-schizophrenia-and-schizophrenia-spectrum-disorders-aspects-of-systematics
#6
A B Smulevich, D V Romanov, A K Mukhorina, J A Atadzhikova
AIM: Psychopathological analysis and typological differentiation of «verschroben»-phenomenon as the full-blown syndrome of defect in schizophrenia and schizophrenia spectrum disorders. MATERIAL AND METHODS: Fifty patients, 33 female and 17 male, mean age 44.8±8.5 years, with ICD-10 diagnosis of schizotypal disorder (F21) and residual schizophrenia (F20.5) were included in the study. Patients were examined using psychopathological and psychometric (SPQ-74) methods...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28235554/mismatch-field-latency-but-not-power-may-mark-a-shared-autistic-and-schizotypal-trait-phenotype
#7
Talitha C Ford, Will Woods, David P Crewther
The auditory mismatch negativity (MMN), a preattentive processing potential, and its magnetic counterpart (MMF) are consistently reported as reduced in schizophrenia and autism spectrum disorders. This study investigates whether MMF characteristics differ between subclinically high and low scorers on the recently discovered shared autism and schizophrenia phenotype, Social Disorganisation. A total of 18 low (10 female) and 19 high (9 female) Social Disorganisation scorers underwent magnetoencephalography (MEG) during a MMF paradigm of 50ms standard (1000Hz, 85%) and 100ms duration deviant tones...
February 21, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/28215470/sex-versus-gender-differences-in-schizophrenia-the-case-for-normal-personality-differences
#8
Richard Lewine, Morgan Martin, Mara Hart
Schizophrenia has generally been viewed as having a unique preschizophrenia personality or destructive to the personality post-onset. This view is reflected in the scarcity of studies of personality in schizophrenia with the exception of schizotypal personality considered by many as an endophenotype of schizophrenia. What is missing is the study of personality as independent of schizophrenia and as a potential source of schizophrenia heterogeneity. In this study we examine sex versus gender as an initial effort to introduce personality as a normal variant that influences how schizophrenia is expressed...
February 16, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28210229/longitudinal-associations-between-posttraumatic-stress-disorder-severity-and-personality-disorder-features-among-female-rape-survivors
#9
Michelle J Bovin, Erika J Wolf, Patricia A Resick
This study evaluated how change in posttraumatic stress disorder (PTSD) symptoms was associated with residualized change in comorbid personality disorder (PD) features and vice versa over the course of 5-10 years. The sample was comprised of 79 female rape survivors who met criteria for PTSD and who were a part of a larger study examining the effects of trauma-focused therapy. PTSD was assessed with the fourth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) version of the Clinician-Administered PTSD Scale [CAPS-IV (1)] and PD features were assessed with the DSM-IV dimensional PD scales on the Schedule for Non-adaptive and Adaptive Personality [SNAP (2)]...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28192768/schizotypal-and-affective-traits-in-the-offspring-of-antenatally-depressed-mothers-relationship-to-family-history-of-psychosis-in-the-northern-finland-1966-birth-cohort
#10
T Taka-Eilola Née Riekki, J Miettunen, P Mäki
BACKGROUND: Maternal depression is relatively common during pregnancy. However, follow-ups of the adult offspring of antenatally depressed mothers are scarce. Previously we found the risk of schizophrenia to be higher in the adult offspring with antenatally depressed mothers and parents with psychosis than in subjects with only one or neither of these risk factors. The aim was to study whether the risk of schizotypal or affective traits differ among adult offspring with antenatally depressed mothers with or without a parental history of psychosis when compared with offspring without antenatally depressed mothers and without parental psychosis...
December 28, 2016: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28152990/reduced-functional-connectivity-between-bilateral-precuneus-and-contralateral-parahippocampus-in-schizotypal-personality-disorder
#11
Yikang Zhu, Yunxiang Tang, Tianhong Zhang, Hui Li, Yingying Tang, Chunbo Li, Xingguang Luo, Yongguang He, Zheng Lu, Jijun Wang
BACKGROUND: Schizotypal personality disorder (SPD) is linked to schizophrenia in terms of shared genetics, biological markers and phenomenological characteristics. In the current study, we aimed to determine whether the previously reported altered functional connectivity (FC) with precuneus in patients with schizophrenia could be extended to individuals with SPD. METHODS: Twenty subjects with SPD and 19 healthy controls were recruited from 4461 freshmen at a university in Shanghai and received a resting-state scan of MRI...
February 2, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28127907/persistence-of-psychosis-spectrum-symptoms-in-the-philadelphia-neurodevelopmental-cohort-a-prospective-two-year-follow-up
#12
Monica E Calkins, Tyler M Moore, Theodore D Satterthwaite, Daniel H Wolf, Bruce I Turetsky, David R Roalf, Kathleen R Merikangas, Kosha Ruparel, Christian G Kohler, Ruben C Gur, Raquel E Gur
Prospective evaluation of youths with early psychotic-like experiences can enrich our knowledge of clinical, biobehavioral and environmental risk and protective factors associated with the development of psychotic disorders. We aimed to investigate the predictors of persistence or worsening of psychosis spectrum features among US youth through the first large systematic study to evaluate subclinical symptoms in the community. Based on Time 1 screen of 9,498 youth (age 8-21) from the Philadelphia Neurodevelopmental Cohort, a subsample of participants was enrolled based on the presence (N=249) or absence (N=254) of baseline psychosis spectrum symptoms, prior participation in neuroimaging, and current neuroimaging eligibility...
February 2017: World Psychiatry: Official Journal of the World Psychiatric Association (WPA)
https://www.readbyqxmd.com/read/28127577/parkinsonian-motor-impairment-predicts-personality-domains-related-to-genetic-risk-and-treatment-outcomes-in-schizophrenia
#13
Juan L Molina, María Calvó, Eduardo Padilla, Mara Balda, Gabriela González Alemán, Néstor V Florenzano, Gonzalo Guerrero, Danielle Kamis, Beatriz Molina Rangeon, Mercedes Bourdieu, Sergio A Strejilevich, Horacio A Conesa, Javier I Escobar, Igor Zwir, C Robert Cloninger, Gabriel A de Erausquin
Identifying endophenotypes of schizophrenia is of critical importance and has profound implications on clinical practice. Here we propose an innovative approach to clarify the mechanims through which temperament and character deviance relates to risk for schizophrenia and predict long-term treatment outcomes. We recruited 61 antipsychotic naïve subjects with chronic schizophrenia, 99 unaffected relatives, and 68 healthy controls from rural communities in the Central Andes. Diagnosis was ascertained with the Schedules of Clinical Assessment in Neuropsychiatry; parkinsonian motor impairment was measured with the Unified Parkinson's Disease Rating Scale; mesencephalic parenchyma was evaluated with transcranial ultrasound; and personality traits were assessed using the Temperament and Character Inventory...
2017: NPJ Schizophrenia
https://www.readbyqxmd.com/read/28126052/schizotypal-traits-and-psychotic-like-experiences-during-adolescence-an-update
#14
Eduardo Fonseca Pedrero, Martin Debbané
BACKGROUND: The psychosis phenotype is distributed along a severity continuum that ranges from psychological well-being to full-blown psychosis. Schizotypal traits and psychotic-like experiences are considered as one of the possible phenotypic indicators of the latent liability for psychosis (named schizotypy). This selective review offers a general overview and update of trait schizotypy and psychotic like experiences during adolescence. METHOD: The previous literature on schizotypal traits  and psychotic like experiences is selectively reviewed...
February 2017: Psicothema
https://www.readbyqxmd.com/read/28063395/differences-in-social-functioning-among-patients-with-major-psychiatric-disorders-interpersonal-communication-is-impaired-in-patients-with-schizophrenia-and-correlates-with-an-increase-in-schizotypal-traits
#15
Toshiki Yasuyama, Kazutaka Ohi, Takamitsu Shimada, Takashi Uehara, Yasuhiro Kawasaki
Impaired social functioning is a hallmark of major psychiatric disorders. The purpose of this study was to detect a disorder-specific factor of social dysfunction among patients with major psychiatric disorders (PSY), including schizophrenia (SCZ), bipolar disorder (BIP) and major depressive disorder (MDD). Social functioning was assessed in patients with SCZ (n=80), BIP (n=27) or MDD (n=29) and healthy controls (HC, n=68) using the Social Functioning Scale (SFS). Compared to HC, the SCZ, BIP and MDD patient groups showed lower total SFS scores...
March 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28024179/co-occurrence-of-autistic-and-schizotypal-traits-and-its-association-with-emotional-and-psychosocial-function-in-chinese-college-students
#16
Li-Juan Shi, Wen-Hua Liu, Hai-Song Shi, Chao Yan, Ya Wang, Yi Wang, Eric F C Cheung, Raymond C K Chan
Empirical findings suggest an overlap between autism spectrum disorders (ASD) and schizophrenia spectrum disorders (SSD). Co-occurring autistic and positive schizotypal traits may have a moderating effect on behaviour and cognition. This study attempted to examine the co-occurrence rate of autistic and schizotypal traits in otherwise healthy college students and to test the moderating effect of co-occurring autistic and schizotypal traits on executive function, emotion processing and social function. Eight hundred and sixty-four participants took part in the present study...
December 20, 2016: Psychiatry Research
https://www.readbyqxmd.com/read/27934937/spatiotemporal-processing-of-somatosensory-stimuli-in-schizotypy
#17
Francesca Ferri, Ettore Ambrosini, Marcello Costantini
Unusual interaction behaviors and perceptual aberrations, like those occurring in schizotypy and schizophrenia, may in part originate from impaired remapping of environmental stimuli in the body space. Such remapping is contributed by the integration of tactile and proprioceptive information about current body posture with other exteroceptive spatial information. Surprisingly, no study has investigated whether alterations in such remapping occur in psychosis-prone individuals. Four hundred eleven students were screened with respect to schizotypal traits using the Schizotypal Personality Questionnaire...
December 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922907/stability-and-change-in-personality-disorder-symptoms-in-1-year-follow-up-of-depressed-adolescent-outpatients
#18
Thea Strandholm, Olli Kiviruusu, Linnea Karlsson, Maiju Pankakoski, Mirjami Pelkonen, Mauri Marttunen
We investigated stability and change in personality disorder (PD) symptoms and whether depression severity, comorbid clinical psychiatric disorders, and social support predict changes in personality pathology among adolescent outpatients. The 1-year outcome of PD symptoms among consecutive adolescent psychiatric outpatients with depressive disorders (N = 189) was investigated with symptom count of depression, comorbid psychiatric disorders, and perceived social support as predictors. An overall decrease in PD symptoms in most PD categories was observed...
January 2017: Journal of Nervous and Mental Disease
https://www.readbyqxmd.com/read/27903327/auditory-vigilance-and-working-memory-in-youth-at-familial-risk-for-schizophrenia-or-affective-psychosis-in-the-harvard-adolescent-family-high-risk-study
#19
Larry J Seidman, Andrea Pousada-Casal, Silvia Scala, Eric C Meyer, William S Stone, Heidi W Thermenos, Elena Molokotos, Jessica Agnew-Blais, Ming T Tsuang, Stephen V Faraone
BACKGROUND: The degree of overlap between schizophrenia (SCZ) and affective psychosis (AFF) has been a recurring question since Kraepelin's subdivision of the major psychoses. Studying nonpsychotic relatives allows a comparison of disorder-associated phenotypes, without potential confounds that can obscure distinctive features of the disorder. Because attention and working memory have been proposed as potential endophenotypes for SCZ and AFF, we compared these cognitive features in individuals at familial high-risk (FHR) for the disorders...
November 2016: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/27901211/how-to-tell-a-happy-from-an-unhappy-schizotype-personality-factors-and-mental-health-outcomes-in-individuals-with-psychotic-experiences
#20
Letícia O Alminhana, Miguel Farias, Gordon Claridge, Claude R Cloninger, Alexander Moreira-Almeida
Objective: It is unclear why some individuals reporting psychotic experiences have balanced lives while others go on to develop mental health problems. The objective of this study was to test if the personality traits of harm avoidance, self-directedness, and self-transcendence can be used as criteria to differentiate healthy from unhealthy schizotypal individuals. Methods: We interviewed 115 participants who reported a high frequency of psychotic experiences. The instruments used were the Temperament and Character Inventory (140), Structured Clinical Interview for DSM-IV, and the Oxford-Liverpool Inventory of Feelings and Experiences...
November 24, 2016: Revista Brasileira de Psiquiatria
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