abstract：:Is there a single executive process or are there multiple executive processes that work together towards the same goal in some task? In these experiments, we use counter switching and response inhibition tasks to examine the neural underpinnings of two cognitive processes that have often been identified as potential e...

journal_title：Neuropsychologia

authors： Sylvester CY,Wager TD,Lacey SC,Hernandez L,Nichols TE,Smith EE,Jonides J

更新日期：2003-01-01 00:00:00

abstract：:Research of the neurobiological bases of learning and memory suggest that these processes are not unitary in nature, but rather that relatively independent neural systems appear to mediate different types of memory. Neurobiological studies, for instance, have identified separable cognitive or "declarative" and stimulu...

journal_title：Neuropsychologia

authors： Poldrack RA,Packard MG

更新日期：2003-01-01 00:00:00

abstract：:There have been a number of reports of preserved face imagery in prosopagnosia. We put this issue to experimental test by comparing the performance of MJH, a 34-year-old prosopagnosic since the age of 5, to controls on tasks where the participants had to judge faces of current celebrities, either in terms of overall s...

journal_title：Neuropsychologia

authors： Michelon P,Biederman I

更新日期：2003-01-01 00:00:00

abstract：:Cognitive estimation is an important function in daily living. In early studies it was proposed that estimation deficits are associated with frontal lobe damage and executive dysfunctions. In this study, we assessed Alzheimer patients and patients with alcoholic Korsakoff's syndrome with a newly developed cognitive es...

journal_title：Neuropsychologia

authors： Brand M,Kalbe E,Fujiwara E,Huber M,Markowitsch HJ

更新日期：2003-01-01 00:00:00

abstract：:Two left- and right-hemispherectomized patients with contralateral hemianopia and 20 normal controls were administered a line bisection task. All hemispherectomized patients showed a strong bisection bias towards their blind visual field. This contralateral bias persisted when patients were forced to start scanning wi...

journal_title：Neuropsychologia

authors： Hausmann M,Waldie KE,Allison SD,Corballis MC

更新日期：2003-01-01 00:00:00

abstract：:The visual perception of size in different regions of external space was studied in Parkinson's disease (PD). A group of patients with worse left-sided symptoms (LPD) was compared with a group with worse right-sided symptoms (RPD) and with a group of age-matched controls on judgements of the relative height or width o...

journal_title：Neuropsychologia

authors： Harris JP,Atkinson EA,Lee AC,Nithi K,Fowler MS

更新日期：2003-01-01 00:00:00

abstract：:In order to plan activity, people must imagine the spatial consequences of potential actions. Two classes of mental spatial transformation can be distinguished: Object-based spatial transformations are imagined movements of objects, such as mental rotation. Egocentric perspective transformations are imagined changes i...

journal_title：Neuropsychologia

authors： Zacks JM,Gilliam F,Ojemann JG

更新日期：2003-01-01 00:00:00

abstract：:Although imaging studies have indicated that the fusiform gyrus is important in tasks of picture naming, whether this region encodes an object's structure or its meaning is not clear. We used positron emission tomography to examine cerebral blood flow (CBF) changes in response to a picture naming task that varied on t...

journal_title：Neuropsychologia

authors： Whatmough C,Chertkow H,Murtha S,Hanratty K

更新日期：2002-01-01 00:00:00

abstract：:The aim of the present study was to examine whether the perception of slow body tilts in total darkness was affected by a complete loss of vestibular function. Four blindfolded bilateral labyrinthine-defective subjects (LDs) and 12 normal subjects (Normals) were seated and immobilized with large straps against the bac...

journal_title：Neuropsychologia

authors： Bringoux L,Schmerber S,Nougier V,Dumas G,Barraud PA,Raphel C

更新日期：2002-01-01 00:00:00

abstract：:It has been proposed that the underlying deficit for some simultanagnosics is the inability to bilaterally orient attention in space due to parietal damage. In five experiments, we examine the performance of a patient with simultanagnosia secondary to bilateral occipito-parietal lesions, IC, in naming pairs of line-dr...

journal_title：Neuropsychologia

authors： Pavese A,Coslett HB,Saffran E,Buxbaum L

更新日期：2002-01-01 00:00:00

abstract：:The 'dysexecutive syndrome' represents a major challenge to functional recovery and adaptation following brain injury--and an important target for rehabilitation. Previous reports of everyday difficulties, and performance on complex, life-like tasks, indicate that an adequately represented goal may become neglected as...

journal_title：Neuropsychologia

authors： Manly T,Hawkins K,Evans J,Woldt K,Robertson IH

更新日期：2002-01-01 00:00:00

abstract：:Functional brain asymmetries in semantic activation were studied by presenting categorically related (e.g. TABLE-BED) or unrelated primes and targets to the left visual field (LVF)/right hemisphere or to the right visual field (RVF)/left hemisphere in the single word presentation lexical decision task. The results sho...

journal_title：Neuropsychologia

authors： Koivisto M,Hämäläinen H

更新日期：2002-01-01 00:00:00

abstract：:The involvement of the frontal cortex and thalamic nucleus in odor discrimination in humans was assessed. Six patients with frontal lobe brain damage, seven patients with alcoholic Korsakoff's syndrome and 16 healthy comparison subjects completed odor detection and odor discrimination tasks. Multivariate general linea...

journal_title：Neuropsychologia

authors： Hulshoff Pol HE,Hijman R,Tulleken CA,Heeren TJ,Schneider N,van Ree JM

更新日期：2002-01-01 00:00:00

abstract：:In hearing people, silent speechreading generates bilateral activation in superior temporal regions specialised for the perception of auditory speech [Science 276 (1997) 593; Neuroreport 11 (2000) 1729; Proceedings of the Royal Society London B 268 (2001) 451]. In the present study, FMRI data were collected from deaf ...

journal_title：Neuropsychologia

authors： MacSweeney M,Calvert GA,Campbell R,McGuire PK,David AS,Williams SC,Woll B,Brammer MJ

更新日期：2002-01-01 00:00:00

abstract：:In the antisaccade paradigm, subjects are instructed to fixate a central point, and then move their eyes towards a position in space in the opposite direction but equidistant to a peripheral, sudden onset target. Antisaccade errors occur when subjects are "distracted" by the target and make a saccade towards it. These...

journal_title：Neuropsychologia

authors： Hutton SB,Joyce EM,Barnes TR,Kennard C

更新日期：2002-01-01 00:00:00

abstract：:Dichotic listening (DL) studies indicate higher proficiency of the right cerebral hemisphere in processing the pitch of auditory events. Especially, acoustic stimuli of a rich harmonic structure such as square waves (complex tones) elicit a left ear advantage (LEA) under dichotic stimulus application. In order to inve...

journal_title：Neuropsychologia

authors： Mathiak K,Hertrich I,Lutzenberger W,Ackermann H

更新日期：2002-01-01 00:00:00

abstract：:The selective attention to facial emotion and identity was investigated in 12 patients with schizophrenia and 12 healthy participants. Both patients and controls were required to perform two classification tasks (according either to identity or emotion). Two separate values for identity (person A/person B) and for emo...

journal_title：Neuropsychologia

authors： Baudouin JY,Martin F,Tiberghien G,Verlut I,Franck N

更新日期：2002-01-01 00:00:00

abstract：:Euthymic patients with bipolar disorder have been reported to show persistent deficits in sustained attention. However, the sustained attention task which was used also placed demands on working memory. Bipolar disorder patients in the euthymic state were therefore compared with healthy controls on two measures of sus...

journal_title：Neuropsychologia

authors： Harmer CJ,Clark L,Grayson L,Goodwin GM

更新日期：2002-01-01 00:00:00

abstract：:Evidence for interhemispheric cooperation during language processing has been demonstrated for words, but not for meaningless pseudowords. Specifically, responses were found to be faster and more accurate when identical copies of a word were presented bilaterally to both hemispheres, relative to unilateral single pres...

journal_title：Neuropsychologia

authors： Mohr B,Landgrebe A,Schweinberger SR

更新日期：2002-01-01 00:00:00

abstract：:Spatial memory is one of the most important cognitive functions in daily life, enabling us to locate objects in our environment or to learn a route or a path. In the present study, we elaborated on the hypothesis that human spatial memory consists of multiple sub-processes, relying on different brain structures. There...

journal_title：Neuropsychologia

authors： Kessels RP,Jaap Kappelle L,de Haan EH,Postma A

更新日期：2002-01-01 00:00:00

abstract：:We describe a patient, VSB, whose reading was impaired as a consequence of a left temporal-parietal lesion, whereas writing was relatively preserved. At variance with other pure alexic patients described in the literature, VSB claimed to have become unable to mentally visualise letters and words. Indeed, his performan...

journal_title：Neuropsychologia

authors： Bartolomeo P,Bachoud-Lévi AC,Chokron S,Degos JD

更新日期：2002-01-01 00:00:00

abstract：:Two underlying components of verbal fluency tasks have been identified as clustering (the ability to generate successive words within a sub-category) and switching (the ability to shift from one sub-category to another). Selective impairment of switching ability occurs in patients with frontostriatal pathology, whilst...

journal_title：Neuropsychologia

authors： Ho AK,Sahakian BJ,Robbins TW,Barker RA,Rosser AE,Hodges JR

更新日期：2002-01-01 00:00:00

abstract：:Evidence from experiments on perceptual learning, accumulated during the last few years, increasingly indicates that the relative 'front end' parts of the visual system are more plastic even in adults than was previously expected. Hence, it might be possible that perceptual learning is similar in several respects to p...

journal_title：Neuropsychologia

authors： Fahle M,Daum I

更新日期：2002-01-01 00:00:00

abstract：:Recently, there has been considerable debate regarding the involvement of the left and right prefrontal cortices in the encoding and retrieval of episodic memory. In a previous PET study, we found that the use of easily verbalisable material may lead to activation predominantly in the left lateral frontal cortex whils...

journal_title：Neuropsychologia

authors： Lee AC,Robbins TW,Smith S,Calvert GA,Tracey I,Matthews P,Owen AM

更新日期：2002-01-01 00:00:00

abstract：:We investigated the role of local and global information on perceptual encoding of faces in patient HJA, who shows prosopagnosia and visual agnosia following occipito-temporal damage. HJA and an age-matched control were tested in a simultaneous matching task which focused on detection of local changes in faces: the in...

journal_title：Neuropsychologia

authors： Boutsen L,Humphreys GW

更新日期：2002-01-01 00:00:00

abstract：:The performance of developmentally dyslexic children and adults was studied upon a range of tasks that involved executive functioning. Both adult and child samples of dyslexics were found to under-perform on the group-embedded figures test. This test required the identification of constituent parts from within complex...

journal_title：Neuropsychologia

authors： Brosnan M,Demetre J,Hamill S,Robson K,Shepherd H,Cody G

更新日期：2002-01-01 00:00:00

abstract：:Unawareness of motor disorders (anosognosia) has often been reported after brain lesions, and it has been considered a temporary condition common in the acute and post-acute phases. The presence of anosognosia in a chronic phase (i.e. lasting more than few weeks) is a rare occurrence, thought to be the result of reaso...

journal_title：Neuropsychologia

authors： Cocchini G,Beschin N,Sala SD

更新日期：2002-01-01 00:00:00

abstract：:Array-centred and subarray-centred neglect were disambiguated in a group of 116 patients with left neglect by means of a modified version of the Albert test in which the central column of segments was deleted so as to create two separate sets of targets grouped by proximity. The results indicated that neglect was more...

journal_title：Neuropsychologia

authors： Neppi-Mòdona M,Savazzi S,Ricci R,Genero R,Berruti G,Pepi R

更新日期：2002-01-01 00:00:00

abstract：:A patient with presumed cerebral vasculitis showed preserved single digit multiplication facts and impaired single digit subtraction facts. Her ability to comprehend and manipulate numerical quantities was intact. Detailed analysis of her MRI-scan revealed a lesion involving the left parietal lobe including the supram...

journal_title：Neuropsychologia

authors： van Harskamp NJ,Rudge P,Cipolotti L

更新日期：2002-01-01 00:00:00

abstract：:Focal retrograde amnesia is an unusual and theoretically challenging form of memory disorder. The case of a 65-year-old woman presenting with focal retrograde amnesia is reported. Following a cardiac arrest and subsequent hypoxia she remained in a coma for 24 h with evidence of epileptiform activity during the early r...

journal_title：Neuropsychologia

authors： Manning L

更新日期：2002-01-01 00:00:00

abstract：:Lines of fish, Girardinus falcatus preferentially turning rightward (RD) or leftward (LD) when facing a dummy predator visible behind a barrier have been obtained through selective breeding. To check whether lateralization was maintained in other behavioral responses, five different tests were carried out. They compri...

journal_title：Neuropsychologia

authors： Bisazza A,Sovrano VA,Vallortigara G

更新日期：2001-01-01 00:00:00

abstract：:A typical scene contains many different objects that compete for neural representation due to the limited processing capacity of the visual system. At the neural level, competition among multiple stimuli is evidenced by the mutual suppression of their visually evoked responses and occurs most strongly at the level of ...

journal_title：Neuropsychologia

authors： Kastner S,Ungerleider LG

更新日期：2001-01-01 00:00:00

abstract：:We report a case study of a patient (IH) with a progressive impairment of semantic memory affecting all categories of knowledge apart from numbers. Pictorial material was better understood than words, but was still severely impaired. The selective preservation of nearly all aspects of numerical knowledge suggested tha...

journal_title：Neuropsychologia

authors： Cappelletti M,Butterworth B,Kopelman M

更新日期：2001-01-01 00:00:00

abstract：:Patients with left-neglect bisect horizontal lines to the right of true center. Their bisection bias is affected by line length, so that longer lines are bisected further to the right. Patients often crossover and bisect very short lines to the left of true center. We tested the hypothesis that the context in which li...

journal_title：Neuropsychologia

authors： Ricci R,Chatterjee A

更新日期：2001-01-01 00:00:00

abstract：:The association between deficits in emotion-related learning, conceptual set shifting, and behavioral problems was investigated in individuals with substantial prenatal alcohol exposure. Twenty subjects with confirmed prenatal alcohol exposure (10 of whom were diagnosed as having Fetal Alcohol Syndrome) and 20 normal ...

journal_title：Neuropsychologia

authors： Kodituwakku PW,May PA,Clericuzio CL,Weers D

更新日期：2001-01-01 00:00:00

abstract：:This study assessed sentence comprehension in Alzheimer's disease (AD) while minimizing executive resource demands. AD patients (n=17) and healthy elderly control subjects (n=17) were asked to detect a word in a sentence. Unbeknownst to subjects, the target word at times followed an incorrect grammatical or semantic a...

journal_title：Neuropsychologia

authors： Grossman M,Rhee J

更新日期：2001-01-01 00:00:00

abstract：OBJECTIVE:To investigate the stability of visual phosphene thresholds and to assess whether they correlate with motor thresholds. BACKGROUND:Currently, motor threshold is used as an index of cortical sensitivity so that in transcranial magnetic stimulation (TMS) experiments, intensity can be set at a given percentage ...

journal_title：Neuropsychologia

authors： Stewart LM,Walsh V,Rothwell JC

更新日期：2001-01-01 00:00:00

abstract：:The ability to detect differences between simultaneously presented contra- and ipsilesional stimuli but not to identify the former on neurological patients with the symptom termed 'extinction' has given rise to the hypothesis that extinguished stimuli have impaired access to attentive processing but are detected pre-a...

journal_title：Neuropsychologia

authors： Ruusuvirta T

更新日期：2001-01-01 00:00:00

abstract：:Patients with frontal lobe lesions are known to encounter severe problems in the organisation of their behaviour in everyday life. Script generation tasks assess the subject's conceptual ability to formulate and evaluate a coherent and structured plan of action. In the present study, we investigated to what extent neu...

journal_title：Neuropsychologia

authors： Zalla T,Plassiart C,Pillon B,Grafman J,Sirigu A

更新日期：2001-01-01 00:00:00

abstract：:The different concepts of impulsivity cover a wide range of divergent behaviors. In clinical terms, aspects of impulsivity are both an important feature in several psychiatric conditions related to a low central serotonergic neurotransmission like aggressive behavior and suicidality, and a core symptom of frontal lobe...

journal_title：Neuropsychologia

authors： Fallgatter AJ,Herrmann MJ

更新日期：2001-01-01 00:00:00