Cognitive NeuropsychiatryPub Date : 2024-05-01Epub Date: 2024-07-28DOI: 10.1080/13546805.2024.2364960
Ho Tae Jeong, Young Chul Youn, Kwang-Yeol Park, Byung-Sun Choi, Taek-Kyun Nam, Hyun Ho Sung
{"title":"Difference between subjective and objective cognitive decline confirmed by power spectral density.","authors":"Ho Tae Jeong, Young Chul Youn, Kwang-Yeol Park, Byung-Sun Choi, Taek-Kyun Nam, Hyun Ho Sung","doi":"10.1080/13546805.2024.2364960","DOIUrl":"10.1080/13546805.2024.2364960","url":null,"abstract":"<p><strong>Introduction: </strong>The study aims to use power spectrum changes in subjective cognitive decline (SCD) and amnestic mild cognitive impairment (aMCI), preclinical stages of Alzheimer's disease (AD), for future biomarker studies in early AD diagnosis.</p><p><strong>Methods: </strong>We recruited 23 SCD and 32 aMCI subjects and conducted comparative analysis using relative power spectral density (PSD). Automated preprocessing and statistical analysis were performed using iSync Brain® (iMediSync Inc., Republic of Korea) (https://isyncbrain.com/).</p><p><strong>Results: </strong>Theta band power in the temporal region was 14.826 ± 7.2394 for the SCD group and 20.003 ± 10.1768 for the aMCI group. In the parietal region, theta band power was 13.614 ± 7.5689 for SCD and 19.894 ± 11.1387 for aMCI. Beta1 band power in the frontal region was 6.639 ± 2.2904 for SCD and 5.465 ± 1.8907 for aMCI, and in the temporal region it was 7.359 ± 2.5619 for SCD and 5.921 ± 2.1605 for aMCI.</p><p><strong>Conclusion: </strong>PSD analysis of resting-state EEG predicted SCD, a preclinical stage of AD. This cross-sectional study observed electrical-physiological characteristics of preclinical AD; however, follow-up studies are needed to evaluate predictive value for future cognitive decline.</p>","PeriodicalId":51277,"journal":{"name":"Cognitive Neuropsychiatry","volume":" ","pages":"194-207"},"PeriodicalIF":1.5,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141789801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Information gathered through draws-to-decision, social functioning, and personal recovery among patients with schizophrenia in Japan.","authors":"Seiichi Watanabe, Takamichi Taniguchi, Motoko Sugihara","doi":"10.1080/13546805.2024.2367269","DOIUrl":"10.1080/13546805.2024.2367269","url":null,"abstract":"<p><strong>Introduction: </strong>In schizophrenia, social functioning and personal recovery are pivotal outcomes potentially influenced by cognitive biases such as Jumping to Conclusions (JTC). Despite their significance, the relationship between JTC, social functioning, and personal recovery remains unclear. This study aims to investigate this relationship to inform tailored interventions for schizophrenia management.</p><p><strong>Methods: </strong>Data were collected from 94 schizophrenia patients using standardised measures. The Beads Task assessed JTC, whereas the Brief PANSS, TMT-J, SLOF-J, and RAS-J evaluated psychiatric symptoms, neurocognitive functioning, social functioning, and personal recovery, respectively. Statistical analyses included correlation and hierarchical regression.</p><p><strong>Results: </strong>Correlation analyses revealed a significant negative correlation between JTC and personal recovery (<i>r</i> = -0.27, <i>p</i> < 0.05). Hierarchical regression indicated JTC as a significant negative predictor of personal recovery (<i>β</i> = -0.33, <i>p</i> = 0.01). No significant correlation was found between JTC and social functioning.</p><p><strong>Discussion: </strong>Increased JTC was associated with lower levels of personal recovery in schizophrenia patients, independent of demographic and clinical factors. In the case of individuals with schizophrenia who demonstrate JTC, there is a potential to suggest the paradox of insight or apparent personal recovery scores.</p>","PeriodicalId":51277,"journal":{"name":"Cognitive Neuropsychiatry","volume":" ","pages":"208-218"},"PeriodicalIF":1.5,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141494222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cognitive NeuropsychiatryPub Date : 2024-05-01Epub Date: 2024-03-29DOI: 10.1080/13546805.2024.2335103
Wendy A Torrens, Jenna N Pablo, Marian E Berryhill, Sarah M Haigh
{"title":"Pattern glare sensitivity distinguishes subclinical autism and schizotypy.","authors":"Wendy A Torrens, Jenna N Pablo, Marian E Berryhill, Sarah M Haigh","doi":"10.1080/13546805.2024.2335103","DOIUrl":"10.1080/13546805.2024.2335103","url":null,"abstract":"<p><strong>Introduction: </strong>Schizophrenia and autism spectrum disorder are distinct neurodevelopmental disorders sharing clinically relevant behaviours. However, early sensory responses show divergent responses. Individuals with schizophrenia typically exhibit cortical <i>hypo-excitability</i> whereas individuals with autism show cortical <i>hyperexcitability</i>. Identifying reliable neurobiological differences between the disorders can diminish misdiagnosis and optimise treatments.</p><p><strong>Methods: </strong>The pattern glare test (PGT) is a simple measure of behavioural hyperexcitability. It measures the number of illusions seen in a static horizontal grating. We collected PGT data from non-clinical adults varying in traits of autism and schizophrenia (schizotypy). 576 undergraduate students completed an online survey consisting of the Schizotypal Personality Questionnaire - Brief Revised, the Autism Spectrum Quotient, and the PGT.</p><p><strong>Results: </strong>Subclinical autism and schizotypy traits were highly <i>positively</i> correlated. However, only schizotypy scores were significantly predictive of reporting more pattern glare (PG) illusions. When assessing the subcomponents of the schizotypy and autism scores, positive and disorganised schizotypy traits were predictive of reporting more PG illusions. Whereas, subclinical autism factors were not predictive of PG illusions.</p><p><strong>Conclusions: </strong>High schizotypy performed the PGT in a manner consistent with behavioural hyperexcitability. The PGT distinguished subclinical autistic traits from schizotypy, suggesting potential clinical application.</p>","PeriodicalId":51277,"journal":{"name":"Cognitive Neuropsychiatry","volume":" ","pages":"155-172"},"PeriodicalIF":1.5,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11296901/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140319819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cognitive NeuropsychiatryPub Date : 2024-05-01Epub Date: 2024-05-26DOI: 10.1080/13546805.2024.2358919
Jesus Ramirez-Bermudez, Maria Yoldi-Negrete, Iris Martinez Juarez, Jorge Cárdenas Belaunzaran, Max Coltheart
{"title":"Visual hallucinations of autobiographical memories: a single-case study.","authors":"Jesus Ramirez-Bermudez, Maria Yoldi-Negrete, Iris Martinez Juarez, Jorge Cárdenas Belaunzaran, Max Coltheart","doi":"10.1080/13546805.2024.2358919","DOIUrl":"10.1080/13546805.2024.2358919","url":null,"abstract":"<p><p><b>Introduction:</b> We report an epileptic patient who experienced hallucinatory visual experiences of autobiographical memories from her past. These visual experiences were confined to the lower left quadrant of her visual field.<b>Methods:</b> We carried out a single-case study that used brain-imaging, EEG and behavioural methods to study this patient.<b>Results:</b> We found that this patient had an incomplete left inferior homonymous quadrantanopia due to a lesion of right occipital cortex, and also that she showed neurological abnormalities in right temporal cortex, a region that is part of the brain's autobiographical-memory circuit.<b>Conclusion:</b> We attribute the occurrence of this patient's autobiographical-memory hallucinations to the combination of degraded visual input to right temporal cortex plus hyperexcitability of that region.</p>","PeriodicalId":51277,"journal":{"name":"Cognitive Neuropsychiatry","volume":" ","pages":"186-193"},"PeriodicalIF":1.5,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141155865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cognitive NeuropsychiatryPub Date : 2024-05-01Epub Date: 2024-05-24DOI: 10.1080/13546805.2024.2357065
Mohamad El Haj, Frank Larøi, Guillaume Chapelet
{"title":"Limited awareness of hallucinations in patients with Alzheimer's disease.","authors":"Mohamad El Haj, Frank Larøi, Guillaume Chapelet","doi":"10.1080/13546805.2024.2357065","DOIUrl":"10.1080/13546805.2024.2357065","url":null,"abstract":"<p><strong>Introduction: </strong>We investigated the degree of cognitive insight in patients with Alzheimer's Disease (AD) regarding their hallucinations, aiming to elucidate the subjective experiences and perceptions associated with this phenomenon.</p><p><strong>Methods: </strong>Using a cross-sectional design, we invited both AD patients (<i>n</i> = 31) and their informants to evaluate the occurrence of hallucinations. Degree of cognitive insight was based upon the discrepancy between the patients' and informants' evaluations.</p><p><strong>Results: </strong>Analysis demonstrated that AD patients rated the occurrence of hallucinations lower than their informants, indicating that patients tended to underestimate the frequency of their hallucinations. The discrepancy between the ratings of patients and informants was negatively correlated with cognitive functioning, suggesting that a greater discrepancy (indicating poorer insight) was associated with lower cognitive functioning in patients.</p><p><strong>Discussion: </strong>Our findings highlight the deficits in insight into hallucinations among AD patients, specifically indicating that AD patients have limited awareness of their own hallucinations. Furthermore, our findings support the idea that deficits in insight into hallucinations are associated with the progression of AD.</p>","PeriodicalId":51277,"journal":{"name":"Cognitive Neuropsychiatry","volume":" ","pages":"173-185"},"PeriodicalIF":1.5,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141094606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Validation of the Turkish version of the Neurological Fatigue Index for Stroke","authors":"Hilalnur Küçükakgün, Zeliha Tulek, Kimya Kılıçaslan, Jbid Dursun Uncu, Ceren Bayrak, Roya Soltanalizadeh, Yakup Krespi","doi":"10.1080/13546805.2024.2337155","DOIUrl":"https://doi.org/10.1080/13546805.2024.2337155","url":null,"abstract":"Post-stroke fatigue is an often overlooked problem that hinders recovery. Therefore, stroke patients should be evaluated for fatigue during the recovery period. This study aimed to adapt the Neurol...","PeriodicalId":51277,"journal":{"name":"Cognitive Neuropsychiatry","volume":"31 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140581067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cognitive NeuropsychiatryPub Date : 2024-03-01Epub Date: 2024-02-06DOI: 10.1080/13546805.2024.2313470
Kaitlin Moat, Guy Wallis, Ken McAnally, Phil Grove, Agnes Horvath
{"title":"Schizotypy and perceptual span in a non-clinical sample: a virtual reality study.","authors":"Kaitlin Moat, Guy Wallis, Ken McAnally, Phil Grove, Agnes Horvath","doi":"10.1080/13546805.2024.2313470","DOIUrl":"10.1080/13546805.2024.2313470","url":null,"abstract":"<p><strong>Introduction: </strong>Individuals with high schizotypy or schizophrenia exhibit difficulties in distributing their attention across space, leading to a reduction in their \"perceptual span\" - the extent of visual space that can be attended to at once. In this study, we aim to explore the correlation between schizotypy and perceptual span in a non-clinical sample to investigate whether perceptual span correlates with schizotypy across its range.</p><p><strong>Methods: </strong>Schizotypy was assessed in fifty-five participants using the Schizotypy Personality Questionnaire (SPQ; Raine, 1991). Participants were required to attend to two dynamic targets displayed in a head-mounted virtual reality display. Perceptual span was estimated as the lateral angle of separation between the two targets beyond which performance in the task dropped to threshold.</p><p><strong>Results: </strong>Participants with higher schizotypy scores performed significantly worse on the task. Of all the factors associated with schizotypy, the shared variance between Disorganisation and Cognitive/Perceptual Factors was most predictive of task performance.</p><p><strong>Conclusion: </strong>The results support the hypothesis that schizotypy predicts perceptual span in non-clinical samples. Furthermore, the demonstration of a reduced perceptual span in individuals with higher trait schizotypy shows that variations in an individual's capacity to divide attention across space can be accurately captured using a virtual reality head-mounted display.</p>","PeriodicalId":51277,"journal":{"name":"Cognitive Neuropsychiatry","volume":" ","pages":"103-115"},"PeriodicalIF":1.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139693525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cognitive NeuropsychiatryPub Date : 2024-03-01Epub Date: 2024-02-09DOI: 10.1080/13546805.2024.2313387
Elvan Ciftci, Shams Farhad, Baris Metin, Nevzat Tarhan
{"title":"Neurocognition across bipolar disorder phases compared to healthy subjects.","authors":"Elvan Ciftci, Shams Farhad, Baris Metin, Nevzat Tarhan","doi":"10.1080/13546805.2024.2313387","DOIUrl":"10.1080/13546805.2024.2313387","url":null,"abstract":"<p><strong>Introduction: </strong>Bipolar disorder (BD) is associated with cognitive abnormalities that may persist during euthymia and are linked to poor occupational performance. The cognitive differences between phases of BD are not well known. Therefore, a cross-sectional study with a relatively large population was conducted to evaluate the differences among BD phases in a wide range of neurocognitive parameters.</p><p><strong>Methods: </strong>Neuropsychological profile of 169 patients with a diagnosis of BD in manic, depressive, mixed, and euthymic phases between the ages of 18 and 70 years were compared to 45 healthy individuals' between ages of 24 and 69 years. The working memory (digit-span backward test), face recognition, executive functions (verbal fluency and Stroop test), face recognition, and visual and verbal memory (immediate and delayed recall) were evaluated. For BD subgroup analyses, we used the Kruskal-Wallis (KW) test. Then, for the comparison of BD versus healthy individuals, we used the Mann-Whitney U (MWU) test.</p><p><strong>Results: </strong>Analyses based on non-parametric tests showed impairments in BD for all tests. There were no significant differences between phases.</p><p><strong>Conclusion: </strong>Cognitive performance in patients with BD appears to be mostly unrelated to the phase of the disorder, implying that cognitive dysfunction in BD is present even during remission.</p>","PeriodicalId":51277,"journal":{"name":"Cognitive Neuropsychiatry","volume":" ","pages":"73-86"},"PeriodicalIF":1.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139713332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cognitive NeuropsychiatryPub Date : 2024-03-01Epub Date: 2024-04-02DOI: 10.1080/13546805.2024.2326243
Toni D Pikoos, Amy Malcolm, David J Castle, Susan L Rossell
{"title":"A hierarchy of visual processing deficits in body dysmorphic disorder: a conceptual review and empirical investigation.","authors":"Toni D Pikoos, Amy Malcolm, David J Castle, Susan L Rossell","doi":"10.1080/13546805.2024.2326243","DOIUrl":"10.1080/13546805.2024.2326243","url":null,"abstract":"<p><strong>Objective: </strong>Abnormal visual processing has been proposed as a mechanism underlying excessive focus on minor appearance flaws in body dysmorphic disorder (BDD). Existing BDD research has not differentiated the various stages of face processing (featural, first-order configural, holistic and second-order configural) that are required for higher-order processes such as emotion recognition. This study investigated a hierarchical visual processing model to examine the nature of abnormalities in face processing in BDD.</p><p><strong>Method: </strong>Thirty BDD participants and 27 healthy controls completed the Navon task, a featural and configural face processing task and a facial emotion labelling task.</p><p><strong>Results: </strong>BDD participants performed similarly to controls when processing global and local non-face stimuli on the Navon task, when detecting subtle changes in the features and spacing of a target face, and when labelling emotional faces. However, BDD participants displayed poorer performance when viewing inverted faces, indicating difficulties in configural processing.</p><p><strong>Conclusions: </strong>The findings only partially support prior work. However, synthesis of results with previous findings indicates that heterogenous task methodologies may contribute to inconsistent findings. Recommendations are provided regarding the task parameters that appear most sensitive to abnormalities in BDD.</p>","PeriodicalId":51277,"journal":{"name":"Cognitive Neuropsychiatry","volume":" ","pages":"116-140"},"PeriodicalIF":1.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140337570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cognitive NeuropsychiatryPub Date : 2024-03-01Epub Date: 2024-02-16DOI: 10.1080/13546805.2024.2313467
Luke Wilson Rogers, Mma Yeebo, Daniel Collerton, Peter Moseley, Robert Dudley
{"title":"Non-clinical hallucinations and mental imagery across sensory modalities.","authors":"Luke Wilson Rogers, Mma Yeebo, Daniel Collerton, Peter Moseley, Robert Dudley","doi":"10.1080/13546805.2024.2313467","DOIUrl":"10.1080/13546805.2024.2313467","url":null,"abstract":"<p><strong>Introduction: </strong>Vivid mental imagery has been proposed to increase the likelihood of experiencing hallucinations. Typically, studies have employed a modality general approach to mental imagery which compares imagery across multiple domains (e.g., visual, auditory and tactile) to hallucinations in multiple senses. However, modality specific imagery may be a better predictor of hallucinations in the same domain. The study examined the contribution of imagery to hallucinations in a non-clinical sample and specifically whether imagery best predicted hallucinations at a modality general or modality specific level.</p><p><strong>Methods: </strong>In study one, modality general and modality specific accounts of the imagery-hallucination relationship were contrasted through application of self-report measures in a sample of 434 students. Study two used a subsample (<i>n</i> = 103) to extend exploration of the imagery-hallucinations relationship using a performance-based imagery task.</p><p><strong>Results: </strong>A small to moderate modality general relationship was observed between self-report imagery and hallucination proneness. There was only evidence of a modality specific relationship in the tactile domain. Performance-based imagery measures were unrelated to hallucinations and self-report imagery.</p><p><strong>Conclusions: </strong>Mental imagery may act as a modality general process increasing hallucination proneness. The observed distinction between self-report and performance-based imagery highlights the difficulty of accurately measuring internal processes.</p>","PeriodicalId":51277,"journal":{"name":"Cognitive Neuropsychiatry","volume":" ","pages":"87-102"},"PeriodicalIF":1.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139742666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}