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Cognitive Neuropsychiatry

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https://www.readbyqxmd.com/read/28578638/temporal-processing-deficit-leads-to-impaired-multisensory-binding-in-schizophrenia
#1
Mikhail Zvyagintsev, Carmen Parisi, Klaus Mathiak
INTRODUCTION: Schizophrenia has been characterised by neurodevelopmental dysconnectivity resulting in cognitive and perceptual dysmetria. Hence patients with schizophrenia may be impaired to detect the temporal relationship between stimuli in different sensory modalities. However, only a few studies described deficit in perception of temporally asynchronous multisensory stimuli in schizophrenia. METHODS: We examined the perceptual bias and the processing time of synchronous and delayed sounds in the streaming-bouncing illusion in 16 patients with schizophrenia and a matched control group of 18 participants...
June 3, 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28346041/enhancing-tolerability-of-a-measure-of-social-perception-in-schizophrenia-comparison-of-short-and-long-norwegian-versions-of-the-relationships-across-domains-test
#2
Anja Vaskinn, Alan P Fiske, Michael F Green
INTRODUCTION: Relationship perception focuses on social interactions, is reduced in schizophrenia and is related to daily functioning. It can be assessed with the Relationships Across Domains (RAD) test, built on Relational Models Theory which states that people use four relational models to interpret social interaction. RAD is time consuming, low on tolerability and only used in English-speaking countries. We evaluated the psychometric properties of a translated, abbreviated Norwegian version...
March 27, 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28566003/memory-and-executive-functions-correlates-of-self-awareness-in-traumatic-brain-injury
#3
Nicolle Zimmermann, Daniel C Mograbi, Andressa Hermes-Pereira, Rochele P Fonseca, George P Prigatano
OBJECTIVE: The purpose of this study was to investigate the contribution of executive functions (EF) components and episodic and working memory variables, as well as clinical and demographic factors, to awareness of cognitive ability in traumatic brain injury (TBI). METHODS: Sixty-five TBI patients (mild: n = 26; moderate/severe: n = 39) took part in the study. Independent stepwise regression models were calculated for EF and memory predictors, with awareness being measured by patient/informant discrepancy in the Patient Competency Rating Scale...
July 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28545341/interidentity-amnesia-in-dissociative-identity-disorder
#4
John Morton
INTRODUCTION: Patients diagnosed with dissociative identity disorder (DID) usually present with alternative personality states (alters) who take separate control of consciousness. Commonly, one alter will claim they have no awareness of events which took place when another alter was in control. However, some kinds of material are transferred across the alter boundary. Huntjens et al. devised an objective method of demonstrating such transfer. METHODS: In the main study, following Huntjens et al...
July 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28537109/facial-and-prosodic-emotion-recognition-in-social-anxiety-disorder
#5
Huai-Hsuan Tseng, Yu-Lien Huang, Jian-Ting Chen, Kuei-Yu Liang, Chao-Cheng Lin, Sue-Huei Chen
INTRODUCTION: Patients with social anxiety disorder (SAD) have a cognitive preference to negatively evaluate emotional information. In particular, the preferential biases in prosodic emotion recognition in SAD have been much less explored. The present study aims to investigate whether SAD patients retain negative evaluation biases across visual and auditory modalities when given sufficient response time to recognise emotions. METHODS: Thirty-one SAD patients and 31 age- and gender-matched healthy participants completed a culturally suitable non-verbal emotion recognition task and received clinical assessments for social anxiety and depressive symptoms...
July 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28490234/are-self-rated-and-behavioural-measures-of-impulsivity-in-bipolar-disorder-mainly-related-to-comorbid-substance-use-problems
#6
Isabelle E Bauer, Thomas D Meyer, Marsal Sanches, Danielle Spiker, Giovana Zunta-Soares, Jair C Soares
INTRODUCTION: Impulsivity is a multidimensional feature observed in bipolar disorder (BD) and substance use disorder (SUD). We previously found a relationship between SUD and risk taking in BD. It is still unclear whether self-rated and behavioral impulsivity measures differ between BD with and without comorbid SUD, or are specific to BD. METHODS: 93 adults with BD with comorbid SUD, 91 BD without SUD, and 93 healthy controls (HC) were administered the Barratt Impulsivity Scale (BIS), the Behavioral Inhibition/Behavioral Activation System Scale (BIS/BAS), and the Cambridge Neuropsychological Test Automated Battery...
July 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28470106/associations-of-neurod2-polymorphisms-and-change-of-cognitive-dysfunctions-in-schizophrenia-and-schizoaffective-disorder-after-eight-weeks-of-antipsychotic-treatment
#7
Ilja Spellmann, Michael Riedel, Julia Städtler, Peter Zill, Michael Obermeier, Anja Cerovecki, Sandra Dehning, Rebecca Schennach, Maria Epple, Markus Opgen-Rhein, Norbert Müller, Brigitta Bondy, Hans-Jürgen Möller, Richard Musil
INTRODUCTION: NEUROD2 is a neurospecific helix-loop-helix transcription factor which has an impact on the regulation of glutamatergic and GABAergic genes. We investigated an association of NEUROD2 with neurocognitive dysfunctions in schizophrenia and schizoaffective disorder patients before and during treatment with different second-generation antipsychotics. METHODS: Patients were genotyped for four different polymorphisms of the NEUROD2 gene ((rs9889354(A/G), rs1877032(C/T), rs12453682(C/T) and rs11078918(C/G))...
July 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28421867/symptom-related-attributional-biases-in-schizophrenia-and-bipolar-disorder
#8
Nicole Sanford, Todd S Woodward
INTRODUCTION: Biases in causal attributions and evidence integration have been implicated in delusions, but have not been investigated simultaneously to examine additive or multiplicative effects. It was hypothesised that paranoid delusions would correlate with self-serving and personalising biases ("defence" model of paranoia), particularly when these biases were disconfirmed. METHODS: Constrained principal component analysis was used to investigate differences between schizophrenia patients (paranoid vs...
July 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28322616/how-individuals-with-body-dysmorphic-disorder-bdd-process-their-own-face-a-quantitative-and-qualitative-investigation-based-on-an-eye-tracking-paradigm
#9
Wei Lin Toh, David J Castle, Susan L Rossell
INTRODUCTION: Body dysmorphic disorder (BDD) is characterised by repetitive behaviours and/or mental acts occurring in response to preoccupations with perceived flaws in physical appearance. Based on an eye-tracking paradigm, this study aimed to examine how individuals with BDD processed their own face. METHODS: Participants were 21 BDD patients, 19 obsessive-compulsive disorder patients and 21 healthy controls (HC), who were age-, sex-, and IQ-matched. Stimuli were photographs of participants' own faces as well as those from the Pictures of Facial Affect battery...
March 21, 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28288549/the-psychometric-properties-of-the-reading-the-mind-in-the-eyes-test-an-item-response-theory-irt-analysis
#10
Antonio Preti, Marcello Vellante, Donatella R Petretto
INTRODUCTION: The "Reading the Mind in the Eyes" Test (hereafter: Eyes Test) is considered an advanced task of the Theory of Mind aimed at assessing the performance of the participant in perspective-takingthat is, the ability to sense or understand other people's cognitive and emotional states. In this study, the item response theory analysis was applied to the adult version of the Eyes Test. METHODS: The Italian version of the Eyes Test was administered to 200 undergraduate students of both genders (males = 46%)...
March 13, 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28288547/neuropsychological-correlates-of-schizotypy-a-systematic-review-and-meta-analysis-of-cross-sectional-studies
#11
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/28288532/emotion-recognition-and-social-skills-in-child-and-adolescent-offspring-of-parents-with-schizophrenia
#12
Leslie E Horton, Miranda A Bridgwater, Gretchen L Haas
INTRODUCTION: Emotion recognition, a social cognition domain, is impaired in people with schizophrenia and contributes to social dysfunction. Whether impaired emotion recognition emerges as a manifestation of illness or predates symptoms is unclear. Findings from studies of emotion recognition impairments in first-degree relatives of people with schizophrenia are mixed and, to our knowledge, no studies have investigated the link between emotion recognition and social functioning in that population...
March 13, 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28253093/suggestibility-and-signal-detection-performance-in-hallucination-prone-students
#13
Fatimah Alganami, Filippo Varese, Graham F Wagstaff, Richard P Bentall
INTRODUCTION: Auditory hallucinations are associated with signal detection biases. We examine the extent to which suggestions influence performance on a signal detection task (SDT) in highly hallucination-prone and low hallucination-prone students. We also explore the relationship between trait suggestibility, dissociation and hallucination proneness. METHOD: In two experiments, students completed on-line measures of hallucination proneness (the revised Launay-Slade Hallucination Scale; LSHS-R), trait suggestibility (Inventory of Suggestibility) and dissociation (Dissociative Experiences Scale-II)...
March 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28253092/assessing-early-processing-of-eye-gaze-in-schizophrenia-measuring-the-cone-of-direct-gaze-and-reflexive-orienting-of-attention
#14
Kiley Seymour, Gillian Rhodes, Jonathan McGuire, Nikolas Williams, Linda Jeffery, Robyn Langdon
INTRODUCTION: The accurate discrimination of another person's eye-gaze direction is vital as it provides a cue to the gazer's focus of attention, which in turn supports joint attention. Patients with schizophrenia have shown a "direct gaze bias" when judging gaze direction. However, current tasks do not dissociate an early perceptual bias from high-level top-down effects. We investigated early stages of gaze processing in schizophrenia by measuring perceptual sensitivity to fine deviations in gaze direction (i...
March 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28253091/enlarged-temporal-integration-window-in-schizophrenia-indicated-by-the-double-flash-illusion
#15
Katharina Haß, Christopher Sinke, Tanya Reese, Mandy Roy, Daniel Wiswede, Wolfgang Dillo, Bob Oranje, Gregor R Szycik
INTRODUCTION: In the present study we were interested in the processing of audio-visual integration in schizophrenia compared to healthy controls. The amount of sound-induced double-flash illusions served as an indicator of audio-visual integration. We expected an altered integration as well as a different window of temporal integration for patients. METHODS: Fifteen schizophrenia patients and 15 healthy volunteers matched for age and gender were included in this study...
March 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28253090/differential-patterns-in-mind-perception-in-subclinical-paranoia-relationships-to-self-reported-empathy
#16
Benjamin Buck, Neil Hester, David L Penn, Kurt Gray
INTRODUCTION: Although social cognition skills and biases are well-studied in paranoia, "mind perception" - perceiving the extent to which someone even possesses a thinking, feeling mind - is not. We sought to better characterise the profile of mind perception for individuals with paranoia. METHODS: We examined links between mind perception and paranoia in a large (n = 890) subclinical sample. Participants completed measures of paranoia, schizotypy, mind perception, and dispositional empathy...
March 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28081654/allusive-thinking-remote-associations-and-auditory-top-down-inhibition-skills-differentially-predict-creativity-and-positive-schizotypy
#17
Christian Rominger, Andreas Fink, Elisabeth M Weiss, Jannis Bosch, Ilona Papousek
INTRODUCTION: Positive schizotypy and creativity seem to be linked. However, the question still remains why they are related, and what may make the difference? As creative ideation is hypothesised as a dual process (association and inhibition), the propensity for remote associations might be a shared mechanism. However, positive schizotypy and creative thinking might be differentially linked to inhibition. Therefore, this study investigated a potentially overlapping feature of positive schizotypy and creativity (remote associations) as well as a potential dissociative factor (auditory inhibition)...
March 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28005458/discriminating-between-first-and-second-order-cognition-in-first-episode-paranoid-schizophrenia
#18
Vibeke Bliksted, Erla Samuelsen, Kristian Sandberg, Bo Martin Bibby, Morten Storm Overgaard
INTRODUCTION: An impairment of visually perceiving backward masked stimuli is commonly observed in patients with schizophrenia, yet it is unclear whether this impairment is the result of a deficiency in first or higher order processing and for which subtypes of schizophrenia it is present. METHODS: Here, we compare identification (first order) and metacognitive (higher order) performance in a visual masking paradigm between a highly homogenous group of young first-episode patients diagnosed with paranoid schizophrenia (N = 11) to that of carefully matched healthy controls (N = 13)...
March 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/27996635/disengagement-from-tasks-as-a-function-of-cognitive-load-and-depressive-symptom-severity
#19
Christopher R Bowie, Melissa Milanovic, Tanya Tran, Sarah Cassidy
INTRODUCTION: Depression is associated with impairment in cognition and everyday functioning. Mechanisms of cognitive dysfunction in depression and the factors that influence strategic deployment of cognitive abilities in complex environments remain elusive. In this study we investigated whether depression symptom severity is associated with disengagement from a working memory task (Paced Auditory Serial Addition Task; PASAT) with parametric adjustment of task difficulty. METHODS: 235 participants completed the Beck Depression Inventory, low and high cognitive load conditions of the PASAT, and quality of life...
January 2017: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/27892849/the-impact-of-acute-stress-on-cognitive-functioning-a-matter-of-cognitive-demands
#20
Thomas Plieger, Andrea Felten, Elena Diks, Jessica Tepel, Melanie Mies, Martin Reuter
INTRODUCTION: There is a controversy in the literature whether stress and related cortisol responses are beneficial or impairing for cognitive functioning. Conflicting results might be due to individual differences in stress reactivity and cognitive load of the applied tasks. METHODS: N = 48 participants underwent the Socially Evaluated Cold Pressor Test and were confronted with the Frankfurter Aufmerksamkeits-Inventar-2 (FAIR-2) which is a low-load attention task and two subscales of the Intelligenz-Struktur-Test 2000 R (I-S-T 2000R) as a high-load reasoning task before and after the stressor...
January 2017: Cognitive Neuropsychiatry
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