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Neuropsychology

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https://www.readbyqxmd.com/read/28318283/cognitive-profile-and-mental-health-in-adult-phenylketonuria-a-pku-cobeso-study
#1
Rianne Jahja, Stephan C J Huijbregts, Leo M J de Sonneville, Jaap J van der Meere, Amanda M Legemaat, Annet M Bosch, Carla E M Hollak, M Estela Rubio-Gozalbo, Martijn C G J Brouwers, Floris C Hofstede, Maaike C de Vries, Mirian C H Janssen, Ans T van der Ploeg, Janneke G Langendonk, Francjan J van Spronsen
OBJECTIVE: Despite early dietary treatment phenylketonuria patients have lower IQ and poorer executive functions compared to healthy controls. Cognitive problems in phenylketonuria have often been associated with phenylalanine levels. The present study examined the cognitive profile and mental health in adult phenylketonuria, in relation to phenylalanine levels and tetrahydrobiopterin treatment. METHOD: Fifty-seven early treated adult patients with phenylketonuria and 57 healthy matched controls (18-40 years) performed IQ subtests and executive function tests from the Amsterdam Neuropsychological Tasks...
March 20, 2017: Neuropsychology
https://www.readbyqxmd.com/read/28318282/altered-resting-state-eeg-complexity-in-children-with-tourette-syndrome-a-preliminary-study
#2
Wen-Chin Weng, Chi-Feng Chang, Lee Chin Wong, Jui-Hsiang Lin, Wang-Tso Lee, Jiann-Shing Shieh
OBJECTIVE: Tourette syndrome is a developmental neuropsychiatric disorder in children, and abnormal corticobasal ganglion connectivity is implied for the pathophysiology. Multiscale entropy, an entropy-based method to measure dynamic complexity at multiple temporal scales, is helpful to disclose the information of brain connectivity. This preliminary study investigated the complexity of resting-state electroencephalogram signals using multiscale entropy in children with Tourette syndrome...
March 20, 2017: Neuropsychology
https://www.readbyqxmd.com/read/28318281/facial-emotion-recognition-face-scan-paths-and-face-perception-in-children-with-neurofibromatosis-type-1
#3
Amelia K Lewis, Melanie A Porter, Tracey A Williams, Samantha Bzishvili, Kathryn N North, Jonathan M Payne
OBJECTIVE: This study aimed to investigate face scan paths and face perception abilities in children with Neurofibromatosis Type 1 (NF1) and how these might relate to emotion recognition abilities in this population. METHOD: The authors investigated facial emotion recognition, face scan paths, and face perception in 29 children with NF1 compared to 29 chronological age-matched typically developing controls. Correlations between facial emotion recognition, face scan paths, and face perception in children with NF1 were examined...
March 20, 2017: Neuropsychology
https://www.readbyqxmd.com/read/28287777/n400-and-emotional-word-processing-in-parkinson-s-disease
#4
Nadeeka N W Dissanayaka, Tiffany R Au, Anthony J Angwin, John D O'Sullivan, Gerard J Byrne, Peter A Silburn, Rodney Marsh, George D Mellick, David A Copland
OBJECTIVE: Emotional and cognitive disturbances are common complications in Parkinson's disease (PD). N400 is an event related potential (ERP) strongly linked to lexical-semantic processing and has demonstrated alterations in amplitude and latency when PD patients performed semantic priming tasks. The present study investigated the role of N400 in an automatic affective priming paradigm in PD. Other ERP components relevant to emotion processing were also examined. METHOD: Twenty-two PD patients and 17 healthy adults performed an automatic affective priming task while ERPs were recorded using 128 channels...
March 13, 2017: Neuropsychology
https://www.readbyqxmd.com/read/28287776/emotion-processing-in-early-blind-and-sighted-individuals
#5
Lucile Gamond, Tomaso Vecchi, Chiara Ferrari, Lotfi B Merabet, Zaira Cattaneo
OBJECTIVE: Emotion processing is known to be mediated by a complex network of cortical and subcortical regions with evidence of specialized hemispheric lateralization within the brain. In light of prior evidence indicating that lateralization of cognitive functions (such as language) may depend on normal visual development, we investigated whether the lack of prior visual experience would have an impact on the development of specialized hemispheric lateralization in emotional processing...
March 13, 2017: Neuropsychology
https://www.readbyqxmd.com/read/28277685/attention-deficit-hyperactivity-disorder-and-phonological-working-memory-methodological-variability-affects-clinical-and-experimental-performance-metrics
#6
Stephanie J Tarle, R Matt Alderson, Connor H G Patros, Sarah E Lea, Kristen L Hudec, Elaine F Arrington
OBJECTIVE: Despite promising findings in extant research that suggest impaired working memory (WM) serves as a central neurocognitive deficit or candidate endophenotype of attention-deficit/hyperactivity disorder (ADHD), findings from translational research have been relatively underwhelming. This study aimed to explicate previous equivocal findings by systematically examining the effect of methodological variability on WM performance estimates across experimental and clinical WM measures...
March 9, 2017: Neuropsychology
https://www.readbyqxmd.com/read/28240935/attentional-impairments-in-huntington-s-disease-a-specific-deficit-for-the-executive-conflict
#7
Pierre Maurage, Alexandre Heeren, Magali Lahaye, Anne Jeanjean, Lamia Guettat, Christine Verellen-Dumoulin, Stéphane Halkin, Joël Billieux, Eric Constant
OBJECTIVE: Huntington's disease (HD) is characterized by motor and cognitive impairments including memory, executive, and attentional functions. However, because earlier studies relied on multidetermined attentional tasks, uncertainty still abounds regarding the differential deficit across attentional subcomponents. Likewise, the evolution of these deficits during the successive stages of HD remains unclear. The present study simultaneously explored 3 distinct networks of attention (alerting, orienting, executive conflict) in preclinical and clinical HD...
February 27, 2017: Neuropsychology
https://www.readbyqxmd.com/read/28230386/does-the-cerebellum-contribute-to-human-navigation-by-processing-sequential-information
#8
Anna M Tedesco, Filippo Bianchini, Laura Piccardi, Silvia Clausi, Alain Berthoz, Marco Molinari, Cecilia Guariglia, Maria Leggio
OBJECTIVE: Several authors have proposed that the cerebellum has an important role in functions of higher order as a general mode of sequence detection, independently from the nature of the information. The aim of this study was to verify whether the cerebellum mediates the processing of navigational sequential information and to determine whether it is influenced by the modality of the stimuli presentation. METHOD: We tested 12 cerebellar patients and 12 healthy age-matched participants in 2 comparable navigational tasks (Walking Corsi Test and the Magic Carpet) requiring to memorizing a sequence of spatial locations...
February 23, 2017: Neuropsychology
https://www.readbyqxmd.com/read/28206782/process-dissociation-analyses-of-memory-changes-in-healthy-aging-preclinical-and-very-mild-alzheimer-disease-evidence-for-isolated-recollection-deficits
#9
Peter R Millar, David A Balota, Geoffrey B Maddox, Janet M Duchek, Andrew J Aschenbrenner, Anne M Fagan, Tammie L S Benzinger, John C Morris
OBJECTIVE: Recollection and familiarity are independent processes that contribute to memory performance. Recollection is dependent on attentional control, which has been shown to be disrupted in early stage Alzheimer's disease (AD), whereas familiarity is independent of attention. The present longitudinal study examines the sensitivity of recollection estimates based on Jacoby's (1991) process dissociation procedure to AD-related biomarkers in a large sample of well-characterized cognitively normal middle-aged and older adults (N = 519) and the extent to which recollection discriminates these individuals from individuals with very mild symptomatic AD (N = 64)...
February 16, 2017: Neuropsychology
https://www.readbyqxmd.com/read/28206781/cognitive-control-and-associated-neural-correlates-in-adults-with-spina-bifida-myelomeningocele
#10
Ashley L Ware, Paulina A Kulesz, Jenifer Juranek, Paul T Cirino, Jack M Fletcher
OBJECTIVE: Accelerated aging can occur in adult survivors of neurodevelopmental disorders, but has been narrowly studied in spina bifida myelomeningocele (SBM). Since discrete aspects of cognitive control and related neural network macrostructure deteriorate in normal aging, the specificity and trajectory of cognition and neuropathology incurred across adulthood in SBM were examined. METHOD: Adults (N = 120) with and without SBM completed working memory span and manipulation tasks, and an inhibitory control task...
February 16, 2017: Neuropsychology
https://www.readbyqxmd.com/read/28150964/is-longer-treatment-better-a-comparison-study-of-3-versus-6-months-cognitive-remediation-in-schizophrenia
#11
Mariachiara Buonocore, Marta Bosia, Margherita Bechi, Marco Spangaro, Silvia Cavedoni, Federica Cocchi, Carmelo Guglielmino, Laura Bianchi, Antonella Rita Mastromatteo, Roberto Cavallaro
OBJECTIVE: Despite its extensive use for treating cognitive deficits in schizophrenia, computer-assisted cognitive remediation (CACR) currently lacks a standardized protocol. Duration is an important feature to be defined, as it may contribute to heterogeneous outcome. This study compares 2 treatment durations, 3 versus 6 months, to analyze their effects on both cognition and daily functioning. METHOD: Fifty-seven outpatients with schizophrenia received 3 months of CACR and 41 received 6 months of CACR...
February 2, 2017: Neuropsychology
https://www.readbyqxmd.com/read/28150963/a-specific-implicit-sequence-learning-deficit-as-an-underlying-cause-of-dyslexia-investigating-the-role-of-attention-in-implicit-learning-tasks
#12
Eva Staels, Wim Van den Broeck
OBJECTIVE: Recently, a general implicit sequence learning deficit was proposed as an underlying cause of dyslexia. This new hypothesis was investigated in the present study by including a number of methodological improvements, for example, the inclusion of appropriate control conditions. The second goal of the study was to explore the role of attentional functioning in implicit and explicit learning tasks. METHOD: In a 2 × 2 within-subjects design 4 tasks were administered in 30 dyslexic and 38 control children: an implicit and explicit serial reaction time (RT) task and an implicit and explicit contextual cueing task...
February 2, 2017: Neuropsychology
https://www.readbyqxmd.com/read/28094999/specificity-of-executive-functioning-and-processing-speed-problems-in-common-psychopathology
#13
Joel T Nigg, Jennifer M Jester, Gillian M Stavro, Ka I Ip, Leon I Puttler, Robert A Zucker
OBJECTIVE: Interest continues in neuropsychological measures as cross-disorder intermediate phenotypes in understanding psychopathology. A central question concerns their specificity versus generalizability to particular forms of psychopathology, particularly for executive functioning (EF) and response speed. Three conceptual models examining these relationships were tested to clarify this picture at different levels in the diagnostic hierarchy. METHOD: Participants (total n = 641, age 18-60) yielded complete structured diagnostic interviews and a neuropsychological test battery comprising measures of executive function, processing speed, and IQ...
January 16, 2017: Neuropsychology
https://www.readbyqxmd.com/read/28240927/contralateral-interictal-and-ictal-eeg-epileptiform-activity-accentuate-memory-impairment-in-unilateral-mesial-temporal-sclerosis-patients
#14
Lecio F Pinto, Carla C Adda, Liliane C A Silva, Natalie H C Banaskiwitz, Valmir Passarelli, Carmen L Jorge, Rosa M Valerio, Luiz H Castro
OBJECTIVE: Memory impairment is a recognized complication of mesial temporal sclerosis (MTS). Epileptiform activity may negatively impact on cognition. We evaluated the impact of contralateral EEG involvement on memory in unilateral MTS (uMTS) patients. METHOD: Retrospective review of 121 right-handed uMTS patients (69 left) evaluated with prolonged video-EEG and verbal and nonverbal memory tests (Rey Auditory Verbal Learning Test and Rey-Osterrieth Complex figure), with additional very delayed trials...
March 2017: Neuropsychology
https://www.readbyqxmd.com/read/28240926/the-impact-of-phenylalanine-levels-on-cognitive-outcomes-in-adults-with-phenylketonuria-effects-across-tasks-and-developmental-stages
#15
Cristina Romani, Liana Palermo, Anita MacDonald, Ellie Limback, S Kate Hall, Tarekegn Geberhiwot
OBJECTIVE: Phenylketonuria (PKU) is due to an inability to metabolize the amino acid phenylalanine (Phe), leading to its accumulation in the brain. Phe levels can be controlled following a protein-free diet, but cognitive impairments are still present. A number of questions remain to be answered related to which type of metabolic control is important, the age when it is important, the cognitive functions which are most affected and, the best tests to use to monitor cognitive health. METHOD: We investigated the impact of metabolic control at different ages on cognitive performance in 37 early treated adults with PKU...
March 2017: Neuropsychology
https://www.readbyqxmd.com/read/28114784/long-term-brain-injury-specific-effects-following-preschool-mild-tbi-a-study-of-theory-of-mind
#16
Jenny Bellerose, Annie Bernier, Cindy Beaudoin, Jocelyn Gravel, Miriam H Beauchamp
OBJECTIVE: A previous study conducted by our group found theory of mind (ToM) differences in preschool children who sustained mild traumatic brain injury (mTBI) compared with typically developing peers, 6 months postinjury. The goals of the current longitudinal study were to determine whether these findings are the result of a brain-injury-specific effect or rather a general-injury effect, to examine the long-term evolution of ToM skills following preschool mTBI, as well as to investigate the links between ToM abilities and general social functioning...
March 2017: Neuropsychology
https://www.readbyqxmd.com/read/28080075/cognitive-outcomes-in-early-treated-adults-with-phenylketonuria-pku-a-comprehensive-picture-across-domains
#17
Liana Palermo, Tarekegn Geberhiwot, Anita MacDonald, Ellie Limback, S Kate Hall, Cristina Romani
OBJECTIVE: Phenylketonuria (PKU) is an inherited metabolic disease which affects cognitive functions due to an inability to metabolize phenylalanine which leads to the accumulation of toxic by-products (Phe) in the brain. PKU can be effectively treated with a low phenylalanine diet, but some cognitive deficits remain. Studies have reported impairments, especially for processing speed and executive functions, but there is a lack of comprehensive assessment across cognitive domains. Moreover, it is important to establish outcomes in early treated adults with PKU (AwPKU) who have better metabolic control than groups previously reported in the literature...
March 2017: Neuropsychology
https://www.readbyqxmd.com/read/28054825/the-relationship-between-premorbid-iq-and-neurocognitive-functioning-in-individuals-with-cocaine-use-disorders
#18
James J Mahoney, Ari D Kalechstein, Anthony P De Marco, Thomas F Newton, Richard De La Garza
OBJECTIVE: To determine whether premorbid IQ mediates performance on neurocognitive tests in individuals diagnosed with cocaine use disorder (CUD). METHOD: Recently abstinent cocaine users (N = 113) completed measures sensitive to the effects of cocaine on cognition: Conners' Continuous Performance Task-II (CPT-II), n-back working memory test, and Hopkins Verbal Learning Task-Revised (HVLT-R). Premorbid IQ was calculated using the Oklahoma Premorbid Intelligence Estimate, which integrates scores from the Wechsler Adult Intelligence Scale-III and demographic variables...
March 2017: Neuropsychology
https://www.readbyqxmd.com/read/28054824/beyond-binary-exploring-the-merits-of-three-depression-groups-in-multiple-sclerosis
#19
Margaret H Cadden, Jessica E Meyer, Peter A Arnett
OBJECTIVE: Depression has been traditionally explored in the context of multiple sclerosis (MS) as a binary construct (depressed, not depressed). However, given the 50% lifetime prevalence rate of depression in MS, it may be useful to consider not only currently depressed versus nondepressed patients, but to evaluate groups that better characterize the complexity of MS depression. The objective of the current study was to examine demographic, cognitive, illness, and psychosocial variables thought to associate with depression in MS across 3 groups: currently depressed, remitted depression, and never been depressed...
March 2017: Neuropsychology
https://www.readbyqxmd.com/read/28054823/estradiol-related-variations-in-top-down-and-bottom-up-processes-of-cerebral-lateralization
#20
Sophie Hodgetts, Susanne Weis, Markus Hausmann
OBJECTIVE: Natural fluctuations of sex hormones have been shown to modulate cerebral lateralization in dichotic listening tasks. Two recent studies presented contradictory notions regarding the mechanism of this effect. Specifically, whereas Hjelmervik et al. (2012) suggested that estradiol affects lateralization by enhancing top-down processes, such as cognitive control, Hodgetts, Weis, and Hausmann, (2015) suggested that the effect was attributable to estradiol-related variations in bottom-up aspects of lateralization...
March 2017: Neuropsychology
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