journal
MENU ▼
Read by QxMD icon Read
search

Neuropsychologia

journal
https://www.readbyqxmd.com/read/27919661/a-functional-near-infrared-spectroscopy-study-of-the-effects-of-configural-properties-on-sustained-attention
#1
Neil R de Joux, Kyle M Wilson, Paul N Russell, Kristin M Finkbeiner, William S Helton
Forty-five participants performed a vigilance task during which they were required to respond to a critical signal at a local feature level, while the global display was altered between groups (either a circle, a circle broken apart and reversed, or a reconnected figure). The shape in two of the groups formed a configurative whole (the circle and reconnected conditions), while the remaining shape had no complete global element (broken circle). Performance matched the results found in the previous experiments using this stimulus set, where a configural superiority effect was found to influence accuracy over time...
December 2, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27916672/famous-faces-and-voices-differential-profiles-in-early-right-and-left-semantic-dementia-and-in-alzheimer-s-disease
#2
Simona Luzzi, Sara Baldinelli, Valentina Ranaldi, Katia Fabi, Viviana Cafazzo, Fabio Fringuelli, Mauro Silvestrini, Leandro Provinciali, Carlo Reverberi, Guido Gainotti
BACKGROUND: Famous face and voice recognition is reported to be impaired both in semantic dementia (SD) and in Alzheimer's Disease (AD), although more severely in the former. In AD a coexistence of perceptual impairment in face and voice processing has also been reported and this could contribute to the altered performance in complex semantic tasks. On the other hand, in SD both face and voice recognition disorders could be related to the prevalence of atrophy in the right temporal lobe (RTL)...
December 1, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27916671/leftward-bias-in-orienting-to-and-disengaging-attention-from-salient-task-irrelevant-events-in-rapid-serial-visual-presentation
#3
Kamila Śmigasiewicz, Nicole Westphal, Rolf Verleger
When embedded in the left or right stream of rapidly changing distractors, the second target (T2) is systematically better identified on the left than on the right. This left visual field advantage (LVFA) was recently attributed to better abilities of the right hemisphere in stimulus-driven orienting of attention: it was almost absent when salient uninformative cues were valid (presented in the T2 stream), and increased with invalid (different-stream) cues. However, cue-evoked negativity of event related potentials being earlier at the right than at the left hemisphere suggested that cues also are unequally processed, thereby possibly contributing to increased LVFA after invalid cues...
December 1, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27916670/pseudoneglect-in-line-bisection-judgement-is-associated-with-a-modulation-of-right-hemispheric-spatial-attention-dominance-in-right-handers
#4
Laure Zago, Laurent Petit, Gael Jobard, Julien Hay, Bernard Mazoyer, Nathalie Tzourio-Mazoyer, Hans-Otto Karnath, Emmanuel Mellet
The objective of this study was to validate a line bisection judgement (LBJ) task for use in investigating the lateralized cerebral bases of spatial attention in a sample of 51 right-handed healthy participants. Using functional magnetic resonance imaging (fMRI), the participants performed a LBJ task that was compared to a visuomotor control task during which the participants made similar saccadic and motoric responses. Cerebral lateralization was determined using a voxel-based functional asymmetry analysis and a hemispheric functional lateralization index (HFLI) computed from fMRI contrast images...
December 1, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27914979/-lost-in-time-but-still-moving-to-the-beat
#5
Valentin Bégel, Charles-Etienne Benoit, Angel Correa, Diana Cutanda, Sonja A Kotz, Simone Dalla Bella
Motor synchronization to the beat of an auditory sequence (e.g., a metronome or music) is widespread in humans. However, some individuals show poor synchronization and impoverished beat perception. This condition, termed "beat deafness", has been linked to a perceptual deficit in beat tracking. Here we present single-case evidence (L.A. and L.C.) that poor beat tracking does not have to entail poor synchronization. In a first Experiment, L.A., L.C., and a third case (L.V.) were submitted to the Battery for The Assessment of Auditory Sensorimotor and Timing Abilities (BAASTA), which includes both perceptual and sensorimotor tasks...
November 30, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27913156/the-oral-spelling-profile-of-posterior-cortical-atrophy-and-the-nature-of-the-graphemic-representation
#6
Silvia Primativo, Keir X X Yong, Timothy J Shakespeare, Sebastian J Crutch
Spelling is a complex cognitive task where central and peripheral components are involved in engaging resources from many different cognitive processes. The present paper aims to both characterize the oral spelling deficit in a population of patients affected by a neurodegenerative condition and to clarify the nature of the graphemic representation within the currently available spelling models. Indeed, the nature of graphemic representation as a linear or multi-componential structure is still debated. Different hypotheses have been raised about its nature in the orthographic lexicon, with one positing that graphemes are complex objects whereby quantity and identity are separately represented in orthographic representations and can thus be selectively impaired...
November 29, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27908591/an-fmri-investigation-of-the-relationship-between-future-imagination-and-cognitive-flexibility
#7
R P Roberts, K Wiebels, R L Sumner, V van Mulukom, C L Grady, D L Schacter, D R Addis
While future imagination is largely considered to be a cognitive process grounded in default mode network activity, studies have shown that future imagination recruits regions in both default mode and frontoparietal control networks. In addition, it has recently been shown that the ability to imagine the future is associated with cognitive flexibility, and that tasks requiring cognitive flexibility result in increased coupling of the default mode network with frontoparietal control and salience networks. In the current study, we investigated the neural correlates underlying the association between cognitive flexibility and future imagination in two ways...
November 28, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27894900/neuroimaging-somatosensory-perception-and-masking
#8
Kimford J Meador, Kathleen Pirog Revill, Charles M Epstein, K Sathian, David W Loring, Chris Rorden
The specific cortical and subcortical regions involved in conscious perception and masking are uncertain. This study sought to identify brain areas involved in conscious perception of somatosensory stimuli during a masking task using functional magnetic resonance (fMRI) to contrast perceived vs. non-perceived targets. Electrical trains were delivered to the right index finger for targets and to the left index finger for masks. Target intensities were adjusted to compensate for threshold drift. Sham target trials were given in ~10% of the trials, and target stimuli without masks were delivered in one of the five runs (68 trials/run)...
November 26, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27894901/bilingualism-yields-language-specific-plasticity-in-left-hemisphere-s-circuitry-for-learning-to-read-in-young-children
#9
K K Jasińska, M S Berens, I Kovelman, L A Petitto
How does bilingual exposure impact children's neural circuitry for learning to read? Theories of bilingualism suggests that exposure to two languages may yield a functional and neuroanatomical adaptation to support the learning of two languages (Klein et al., 2014). To test the hypothesis that this neural adaptation may vary as a function of structural and orthographic characteristics of bilinguals' two languages, we compared Spanish-English and French-English bilingual children, and English monolingual children, using functional Near Infrared Spectroscopy neuroimaging (fNIRS, ages 6-10, N = 26)...
November 25, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27889392/transcranial-magnetic-stimulation-to-dorsolateral-prefrontal-cortex-affects-conflict-induced-behavioural-adaptation-in-a-wisconsin-card-sorting-test-analogue
#10
Erica A Boschin, Rogier B Mars, Mark J Buckley
A substantial body of literature has proposed a role for dorsolateral prefrontal cortex (dlPFC) in supporting behavioural adaptation during conflict tasks. The vast majority of the evidence in support of this interpretation comes from neuroimaging studies. However, in order to unequivocally ascribe such a role to dlPFC, it is important to determine whether or not it is essential for this mechanism, and this can only be achieved by lesioning the area or interfering with its activity. In this study, we investigated the effects of repeated Transcranial Magnetic Stimulation (rTMS) to dlPFC on performance on a conflict version of a Wisconsin Card Sorting Test analogue (used previously in circumscribed lesion studies in monkeys) in neurologically healthy human participants...
November 23, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27884757/the-role-of-hearing-ability-and-speech-distortion-in-the-facilitation-of-articulatory-motor-cortex
#11
Helen E Nuttall, Daniel Kennedy-Higgins, Joseph T Devlin, Patti Adank
Excitability of articulatory motor cortex is facilitated when listening to speech in challenging conditions. Beyond this, however, we have little knowledge of what listener-specific and speech-specific factors engage articulatory facilitation during speech perception. For example, it is unknown whether speech motor activity is independent or dependent on the form of distortion in the speech signal. It is also unknown if speech motor facilitation is moderated by hearing ability. We investigated these questions in two experiments...
November 21, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27876508/a-behavioural-and-electrophysiological-investigation-of-the-effect-of-bilingualism-on-aging-and-cognitive-control
#12
Shanna Kousaie, Natalie A Phillips
Given previous, but inconsistent, findings of language group differences on cognitive control tasks the current investigation examined whether such differences could be demonstrated in a sample of older bilingual adults. Monolingual and bilingual older adults performed three cognitive control tasks that have previously been used in the literature (i.e., Stroop, Simon and flanker tasks) while brain electrophysiological recordings took place. Both behavioural (response time and accuracy) and event-related brain potentials (ERPs; N2 and P3 amplitude and latency) were compared across the two language groups...
November 20, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27876509/connectivity-based-constraints-on-category-specificity-in-the-ventral-object-processing-pathway
#13
Quanjing Chen, Frank E Garcea, Jorge Almeida, Bradford Z Mahon
Recent efforts to characterize visual object representations in the ventral object processing pathway in the human brain have led to contrasting proposals about the causes of neural specificity for different categories. Here we use multivariate techniques in a novel way to relate patterns of functional connectivity to patterns of stimulus preferences. Stimulus preferences were measured throughout the ventral stream to tools, animals, faces and places; separately, we measured the strength of functional connectivity of each voxel in the ventral stream to category-preferring regions outside the ventral stream...
November 19, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27865969/age-related-alterations-in-functional-connectivity-patterns-during-working-memory-encoding-of-emotional-items
#14
Maryam Ziaei, Alireza Salami, Jonas Persson
Previous findings indicate age-related differences in frontal-amygdala connectivity during emotional processing. However, direct evidence for age differences in brain functional activation and connectivity during emotional processing and concomitant behavioral implications is lacking. In the present study, we examined the impact of aging on the neural signature of selective attention to emotional information during working memory (WM) encoding. Participants completed an emotional WM task in which they were asked to attend to emotional targets and ignore irrelevant distractors...
November 16, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27865968/the-dorsomedial-prefrontal-cortex-plays-a-causal-role-in-mediating-in-group-advantage-in-emotion-recognition-a-tms-study
#15
L Gamond, Z Cattaneo
Consistent evidence suggests that emotional facial expressions are better recognized when the expresser and the perceiver belong to the same social group (in-group advantage). In this study, we used transcranial magnetic stimulation (TMS) to investigate the possible causal involvement of the dorsomedial prefrontal cortex (dmPFC) and of the right temporo-parietal junction (TPJ), two main nodes of the mentalizing neural network, in mediating the in-group advantage in emotion recognition. Participants performed an emotion discrimination task in a minimal (blue/green) group paradigm...
November 16, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27864027/patterns-of-neural-activity-predict-picture-naming-performance-of-a-patient-with-chronic-aphasia
#16
Yune Sang Lee, Jihad T Zreik, Roy H Hamilton
Naming objects represents a substantial challenge for patients with chronic aphasia. This could be in part because the reorganized compensatory language networks of persons with aphasia may be less stable than the intact language systems of healthy individuals. Here, we hypothesized that the degree of stability would be instantiated by spatially differential neural patterns rather than either increased or diminished amplitudes of neural activity within a putative compensatory language system. We recruited a chronic aphasic patient (KL; 66 year-old male) who exhibited a semantic deficit (e...
November 15, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27863703/reprint-of-object-based-attentional-facilitation-and-inhibition-are-neuropsychologically-dissociated
#17
Daniel T Smith, Keira Ball, Robert Swalwell, Thomas Schenk
Salient peripheral cues produce a transient shift of attention which is superseded by a sustained inhibitory effect. Cueing part of an object produces an inhibitory cueing effect (ICE) that spreads throughout the object. In dynamic scenes the ICE stays with objects as they move. We examined object-centred attentional facilitation and inhibition in a patient with visual form agnosia. There was no evidence of object-centred attentional facilitation. In contrast, object-centred ICE was observed in 3 out of 4 tasks...
November 15, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27851900/residual-perception-of-biological-motion-in-cortical-blindness
#18
Ruffieux Nicolas, Ramon Meike, Lao Junpeng, Colombo Françoise, Stacchi Lisa, Borruat François-Xavier, Accolla Ettore, Annoni Jean-Marie, Caldara Roberto
From birth, the human visual system shows a remarkable sensitivity for perceiving biological motion. This visual ability relies on a distributed network of brain regions and can be preserved even after damage of high-level ventral visual areas. However, it remains unknown whether this critical biological skill can withstand the loss of vision following bilateral striate damage. To address this question, we tested the categorization of human and animal biological motion in BC, a rare case of cortical blindness after anoxia-induced bilateral striate damage...
November 13, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27847305/a-functional-magnetic-resonance-imaging-investigation-of-theory-of-mind-impairments-in-patients-with-temporal-lobe-epilepsy
#19
Sophie Hennion, Xavier Delbeuck, Katja Koelkebeck, Marine Brion, Louise Tyvaert, Lucie Plomhause, Philippe Derambure, Renaud Lopes, William Szurhaj
Although patients with mesial temporal lobe epilepsy (mTLE) are known to have theory of mind (ToM) impairments, the latter's neural functional bases have yet to be explored. We used functional magnetic resonance imaging (fMRI) to gain insights into the neural dysfunction associated with ToM impairments in patients with mTLE. Twenty-five patients (12 and 13 with right and left mTLE, respectively) and 25 healthy controls performed the "animated shapes" task during fMRI. This complex ToM task requires both explicit reasoning about mental states and implicit processing of information on biological motion and action...
November 12, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27847304/the-role-of-cue-detection-for-prospective-memory-development-across-the-lifespan
#20
Alexandra Hering, Nele Wild-Wall, Patrick D Gajewski, Michael Falkenstein, Matthias Kliegel, Katharina Zinke
Behavioral findings suggest an inverted U-shaped pattern of prospective memory development across the lifespan. A key mechanism underlying this development is the ability to detect cues. We examined the influence of cue detection on prospective memory, combining behavioral and electrophysiological measures, in three age groups: adolescents (12-14 years), young (19-28 years), and old adults (66-77 years). Cue detection was manipulated by varying the distinctiveness (i.e., how easy it was to detect the cue based on color) of the prospective memory cue in a semantic judgment ongoing task...
November 12, 2016: Neuropsychologia
journal
journal
21140
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"