Browsing by Author "Dickey, Chandlee"

Now showing items 1-20 of 36

    • Abnormal pitch mismatch negativity in individuals with schizotypal personality disorder 

      Niznikiewicz, Margaret A.; Spencer, Kevin M.; Dickey, Chandlee C.; Voglmaier, Martina M.; Seidman, Larry Joel; Shenton, Martha Elizabeth; McCarley, Robert William (Elsevier BV, 2009)
      Background: The goal of the study was to examine mismatch negativity (MMN) in schizotypal personality disorder (SPD) individuals. Abnormal MMN has been a consistent finding in chronic schizophrenia and there are also have ...

    • Auditory processing abnormalities in schizotypal personality disorder: An fMRI experiment using tones of deviant pitch and duration 

      Dickey, Chandlee C.; Morocz, Istvan; Niznikiewicz, Margaret A.; Voglmaier, Martina M.; Toner, Sarah; Khan, Usman; Dreusicke, Mark; Yoo, Seung-Schik; Shenton, Martha Elizabeth; McCarley, Robert William (Elsevier BV, 2008)
      Background: One of the cardinal features of schizotypal personality disorder (SPD) is language abnormalities. The focus of this study was to determine whether or not there are also processing abnormalities of pure tones ...

    • The Brain in Schizotypal Personality Disorder: A Review of Structural MRI and CT Findings 

      Dickey, Chandlee C.; McCarley, Robert William; Shenton, Martha Elizabeth (Ovid Technologies (Wolters Kluwer Health), 2002)
      Studies of schizotypal personality disorder (SPD) are important because the condition is genetically related to schizophrenia and because data accumulating to confirm its biological underpinnings are challenging some ...

    • Clinical, cognitive, and social characteristics of a sample of neuroleptic-naive persons with schizotypal personality disorder 

      Dickey, Chandlee C.; McCarley, Robert William; Niznikiewicz, Margaret A.; Voglmaier, Martina M.; Seidman, Larry Joel; Kim, Sunnie; Shenton, Martha Elizabeth (Elsevier BV, 2005)
      Introduction: Schizotypal personality disorder (SPD) shares with schizophrenia many biological features, yet little is known about the clinical characteristics of persons diagnosed with this disorder. This report describes ...

    • A comparative profile analysis of neuropsychological function in men and women with schizotypal personality disorder 

      Voglmaier, Martina M.; Seidman, Larry Joel; Niznikiewicz, Margaret A.; Dickey, Chandlee C.; Shenton, Martha Elizabeth; McCarley, Robert William (Elsevier BV, 2005)
      The purpose of this study was to compare the cognitive profiles of men and women with clinically defined schizotypal personality disorder (SPD). We examined the neuropsychological profile of SPD in 26 right-handed females ...

    • Dichotic listening in schizotypal personality disorder: Evidence for gender and laterality effects 

      Voglmaier, Martina M.; Seidman, Larry Joel; Niznikiewicz, Margaret A.; Madan, Anita; Dickey, Chandlee C.; Shenton, Martha Elizabeth; McCarley, Robert William (Elsevier BV, 2009)
      Verbal dichotic listening performance was examined in 42 right-handed men and women with DSM-IV-defined schizotypal personality disorder (SPD) and 68 right-handed controls. As expected, both male and female control groups ...

    • Electrophysiological Correlates of Language Processing in Schizotypal Personality Disorder 

      Niznikiewicz, Margaret A.; Voglmaier, Martina M.; Shenton, Martha Elizabeth; Seidman, Larry Joel; Dickey, Chandlee C.; Rhoads, Richard; Teh, Enkeat; McCarley, Robert William (American Psychiatric Publishing, 1999)
      Objective: This study examined whether the electrophysiological correlates of language processing found previously to be abnormal in schizophrenia are also abnormal in schizotypal individuals. The authors used the N400 ...

    • Facial emotion recognition and facial affect display in schizotypal personality disorder 

      Dickey, Chandlee C.; Panych, Lawrence Patrick; Voglmaier, Martina M.; Niznikiewicz, Margaret A.; Terry, Douglas P.; Murphy, Cara; Zacks, Rayna; Shenton, Martha Elizabeth; McCarley, Robert William (Elsevier BV, 2011)
      Background—Patients with schizophrenia have deficits in facial affect expression and detection that hinder social interactions. The goal of this study was to examine whether or not epidemiologically-related antipsychotic-naïve ...

    • Factors in sensory processing of prosody in schizotypal personality disorder: An fMRI experiment 

      Dickey, Chandlee C.; Morocz, Istvan; Minney, Daniel; Niznikiewicz, Margaret A.; Voglmaier, Martina M.; Panych, Lawrence Patrick; Khan, Usman; Zacks, Rayna; Terry, Douglas P.; Shenton, Martha Elizabeth; McCarley, Robert William (Elsevier BV, 2010)
      Introduction—Persons diagnosed with schizophrenia demonstrate deficits in prosody recognition. To examine prosody along the schizophrenia spectrum, antipsychotic-naïve schizotypal personality disorder (SPD) subjects and ...

    • The five-factor model in schizotypal personality disorder 

      Gurrera, Ronald Joseph; Dickey, Chandlee C.; Niznikiewicz, Margaret A.; Voglmaier, Martina M.; Shenton, Martha Elizabeth; McCarley, Robert William (Elsevier BV, 2005)
      Studies of the five-factor model of personality in schizotypal personality disorder (SPD) have produced inconsistent results, particularly with respect to openness. In the present study, the NEO-FFI was used to measure ...

    • Follow-up MRI study of prefrontal volumes in first-episode psychotic patients 

      Dickey, Chandlee C.; Salisbury, Dean F.; Nagy, Almos I.; Hirayasu, Yoshio; Lee, Chang Uk; McCarley, Robert William; Shenton, Martha Elizabeth (Elsevier BV, 2004)

    • Fronto–Temporal Disconnectivity in Schizotypal Personality Disorder: A Diffusion Tensor Imaging Study 

      Nakamura, Motoaki; McCarley, Robert William; Kubicki, Marek R.; Dickey, Chandlee C.; Niznikiewicz, Margaret A.; Voglmaier, Martina M.; Seidman, Larry Joel; Maier, Stephan Ernst; Westin, Carl-Fredrik; Kikinis, Ron; Shenton, Martha Elizabeth (Elsevier BV, 2005)
      Background: Using diffusion tensor imaging (DTI), we previously reported abnormalities in two critical white matter tracts in schizophrenia, the uncinate fasciculus (UF) and the cingulum bundle (CB), both related to ...

    • An In Vivo MRI Study of Prefrontal Cortical Complexity in First-Episode Psychosis 

      Wiegand, Laura C.; Warfield, Simon Keith; Levitt, James Jonathan; Hirayasu, Yoshio; Salisbury, Dean F.; Heckers, Stephan; Bouix, Sylvain; Schwartz, Daniel; Spencer, Magdalena; Dickey, Chandlee C.; Kikinis, Ron; Jolesz, Ferenc A.; McCarley, Robert William; Shenton, Martha Elizabeth (American Psychiatric Publishing, 2005)
      Objective: The purpose of this study was to investigate abnormalities in the surface complexity of the prefrontal cortex and in the hemispheric asymmetry of cortical complexity in first-episode patients with schizophrenia. ...

    • Large CSF Volume Not Attributable to Ventricular Volume in Schizotypal Personality Disorder 

      Dickey, Chandlee C.; Shenton, Martha Elizabeth; Hirayasu, Yoshio; Fischer, Iris; Voglmaier, Martina M.; Niznikiewicz, Margaret A.; Seidman, Larry Joel; Fraone, Stephanie; McCarley, Robert William (American Psychiatric Publishing, 2000)
      Objective: The purpose of this study was to determine whether schizotypal personality disorder, which has the same genetic diathesis as schizophrenia, manifests abnormalities in whole-brain and CSF volumes. Method: Sixteen ...

    • Lateralized P3 deficit in schizotypal personality disorder 

      Niznikiewicz, Margaret A.; Voglmaier, Martina M.; Shenton, Martha Elizabeth; Dickey, Chandlee C.; Seidman, Larry Joel; Teh, EngKeat; Van Rhoads, Richard; McCarley, Robert William (Elsevier BV, 2000)
      Background: Reduced, left-lateralized P3 amplitude has been reported in several studies focusing on electrophysiologic function in schizophrenia. Also, several lines of evidence suggest a similarity between schizophrenia ...

    • Lower Left Temporal Lobe MRI Volumes in Patients With First-Episode Schizophrenia Compared With Psychotic Patients With First-Episode Affective Disorder and Normal Subjects 

      Hirayasu, Yoshio; Shenton, Martha Elizabeth; Salisbury, Dean F.; Dickey, Chandlee C.; Fischer, Iris A.; Mazzoni, Paola; Kisler, Tanya; Arakaki, Hajime; Kwon, Jun Soo; Anderson, Jane E.; Yurgelun-Todd, Deborah; Tohen, Mauricio; McCarley, Robert William (American Psychiatric Publishing, 1998)
      Objective:Magnetic resonance imaging (MRI) studies of schizophrenic patients have revealed structural brain abnormalities, with low volumes of gray matter in the left posterior superior temporal gyrus and in medial temporal ...

    • Middle and Inferior Temporal Gyrus Gray Matter Volume Abnormalities in Chronic Schizophrenia: An MRI Study 

      Onitsuka, Toshiaki; Shenton, Martha Elizabeth; Salisbury, Dean F.; Dickey, Chandlee C.; Kasai, Kiyoto; Toner, Sarah K.; Frumin, Melissa; Kikinis, Ron; Jolesz, Ferenc A.; McCarley, Robert William (American Psychiatric Publishing, 2004)
      Objective: The middle temporal gyrus and inferior temporal gyrus subserve language and semantic memory processing, visual perception, and multimodal sensory integration. Functional deficits in these cognitive processes ...

    • MRI abnormalities of the hippocampus and cavum septi pellucidi in females with schizotypal personality disorder 

      Dickey, Chandlee C.; McCarley, Robert William; Xu, Mina L.; Seidman, Larry Joel; Voglmaier, Martina M.; Niznikiewicz, Margaret A.; Connor, Erin; Shenton, Martha Elizabeth (Elsevier BV, 2007)
      Objective: This study examined MRI hippocampal volume and cavum septi pellucidi (CSP) in female subjects with schizotypal personality disorder (SPD) and comparison subjects. Method: MRI was performed on 20 SPD and 29 ...

    • MRI Study of Caudate Nucleus Volume and Its Cognitive Correlates in Neuroleptic-Naive Patients With Schizotypal Personality Disorder 

      Levitt, James Jonathan; McCarley, Robert William; Dickey, Chandlee C.; Voglmaier, Martina M.; Niznikiewicz, Margaret A.; Seidman, Larry Joel; Hirayasu, Yoshio; Ciszewski, Aleksandra A.; Kikinis, Ron; Jolesz, Ferenc A.; Shenton, Martha Elizabeth (American Psychiatric Publishing, 2002)
      Objective: “Cognitive” circuits anatomically link the frontal lobe to subcortical structures; therefore, pathology in any of the core components of these circuits, such as in the caudate nucleus, may result in neurobehavioral ...

    • MRI Study of Cavum Septi Pellucidi in Schizophrenia, Affective Disorder, and Schizotypal Personality Disorder 

      Kwon, Jun Soo; Shenton, Martha Elizabeth; Hirayasu, Yoshio; Salisbury, Dean F.; Fischer, Iris A.; Dickey, Chandlee C.; Yurgelun-Todd, Deborah; Tohen, Mauricio; Kikinis, Ron; Jolesz, Ferenc A.; McCarley, Robert William (American Psychiatric Publishing, 1998)
      Objective: A cavum between the septi pellucidi may reflect neurodevelopmental anomalies in midline structures of the brain. The authors examined cavum septi pellucidi in subjects with schizophrenia, affective disorder, and ...