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Brain and Cognition

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https://www.readbyqxmd.com/read/28193545/gaze-cueing-requires-intact-face-processing-insights-from-acquired-prosopagnosia
#1
Nicolas Burra, Dirk Kerzel, Meike Ramon
Gaze-cueing is the automatic spatial orienting of attention in the direction of perceived gaze. Participants respond faster to targets located at positions congruent with the direction of gaze, compared to incongruent ones (gaze cueing effect, GCE). However, it still remains unclear whether its occurrence depends on intact integration of information from the entire eye region or face, rather than simply the presence of the eyes per se. To address this question, we investigated the GCE in PS, an extensively studied case of pure acquired prosopagnosia...
February 10, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28189898/brain-processing-of-visual-metaphors-an-electrophysiological-study
#2
Maria J Ortiz, M D Grima Murcia, E Fernandez
No abstract text is available yet for this article.
February 9, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28182972/defective-imitation-of-finger-configurations-in-patients-with-damage-in-the-right-or-left-hemispheres-an-integration-disorder-of-visual-and-somatosensory-information
#3
Manabu Okita, Takashi Yukihiro, Kenzo Miyamoto, Shu Morioka, Hideto Kaba
To explore the mechanism underlying the imitation of finger gestures, we devised a simple imitation task in which the patients were instructed to replicate finger configurations in two conditions: one in which they could see their hand (visual feedback: VF) and one in which they could not see their hand (non-visual feedback: NVF). Patients with left brain damage (LBD) or right brain damage (RBD), respectively, were categorized into two groups based on their scores on the imitation task in the NVF condition: the impaired imitation groups (I-LBD and I-RBD) who failed two or more of the five patterns and the control groups (C-LBD and C-RBD) who made one or no errors...
February 6, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28167411/which-perseverative-behaviors-are-symptoms-of-spatial-neglect
#4
Meghan D Caulfield, Peii Chen, Michele M Barry, A M Barrett
Spatial neglect is a characterized by a failure to attend or make movements towards left-sided stimuli. Common paper-and-pencil tasks to diagnose spatial neglect are sensitive to perseverative errors, including additional marks over already cancelled targets and "scribbling" out a target. Here, we examine whether functionally distinct perseverative behaviors are related to spatial neglect. Line cancellation tasks of 45 healthy controls and 220 right-hemisphere stroke survivors were examined for recurrent marks (RM) and continuous marks (CM) perseverations...
February 3, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28167410/objects-rapidly-prime-the-motor-system-when-located-near-the-dominant-hand
#5
Paula J Rowe, Corinna Haenschel, Maciej Kosilo, Kielan Yarrow
Objects are said to automatically "afford" various actions depending upon the motor repertoire of the actor. Such affordances play a part in how we prepare to handle or manipulate tools and other objects. Evidence obtained through fMRI, EEG and TMS has proven that this is the case but, as yet, the temporal evolution of affordances has not been fully investigated. The aim here was to further explore the timing of evoked motor activity using visual stimuli tailored to drive the motor system. Therefore, we presented three kinds of stimuli in stereoscopic depth; whole hand grasp objects which afforded a power-grip, pinch-grip objects which afforded a thumb and forefinger precision-grip and an empty desk, affording no action...
February 3, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28160688/the-association-between-aerobic-fitness-and-congruency-sequence-effects-in-preadolescent-children
#6
Daniel R Westfall, Shih-Chun Kao, Mark R Scudder, Matthew B Pontifex, Charles H Hillman
Aerobic fitness has previously been related to cognitive control in preadolescents; however, these investigations have generally relied on global measures of performance. Thus, we have little understanding of how aerobic fitness may relate to trial-by-trial modulations in cognitive control. This study utilized congruency sequence effects (CSEs), which characterize how behavior on the current trial is influenced by the previous trial, to investigate the relation of aerobic fitness on varying levels of cognitive control...
February 2, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28160687/social-attention-in-children-with-epilepsy
#7
Judith Lunn, Tim Donovan, Damien Litchfield, Charlie Lewis, Robert Davies, Trevor Crawford
Children with epilepsy may be vulnerable to impaired social attention given the increased risk of neurobehavioural comorbidities. Social attentional orienting and the potential modulatory role of attentional control on the perceptual processing of gaze and emotion cues have not been examined in childhood onset epilepsies. Social attention mechanisms were investigated in patients with epilepsy (n=25) aged 8-18years old and performance compared to healthy controls (n=30). Dynamic gaze and emotion facial stimuli were integrated into an antisaccade eye-tracking paradigm...
February 1, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28160686/knowing-me-knowing-you-resting-state-functional-connectivity-of-ventromedial-prefrontal-cortex-dissociates-memory-related-to-self-from-a-familiar-other
#8
Irene de Caso, Theodoros Karapanagiotidis, Elena Aggius-Vella, Mahiko Konishi, Daniel S Margulies, Elizabeth Jefferies, Jonathan Smallwood
Material related to the self, as well as to significant others, often displays mnemonic superiority through its associations with highly organised and elaborate representations. Neuroimaging studies suggest this effect is related to activation in regions of medial prefrontal cortex (mPFC). Incidental memory scores for trait adjectives, processed in relation to the self, a good friend and David Cameron were collected. Scores for each referent were used as regressors in seed-based analyses of resting state fMRI data performed in ventral, middle and dorsal mPFC seeds, as well as hippocampal formation...
February 1, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28119206/sex-differences-in-verbal-working-memory-performance-emerge-at-very-high-loads-of-common-neuroimaging-tasks
#9
Jessica L Reed, Natalie M Gallagher, Marie Sullivan, Joseph H Callicott, Adam E Green
Working memory (WM) supports a broad range of intelligent cognition and has been the subject of rich cognitive and neural characterization. However, the highest ranges of WM have not been fully characterized, especially for verbal information. Tasks developed to test multiple levels of WM demand (load) currently predominate brain-based WM research. These tasks are typically used at loads that allow most healthy participants to perform well, which facilitates neuroimaging data collection. Critically, however, high performance at lower loads may obscure differences that emerge at higher loads...
January 21, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28113099/a-right-hemisphere-advantage-at-early-cortical-stages-of-processing-alphanumeric-stimuli-evidence-from-electrophysiology
#10
Dariusz Asanowicz, Rolf Verleger, Lena Kruse, Kathrin Beier, Kamila Śmigasiewicz
This study investigates hemispheric asymmetry evoked by non-target alphanumeric stimuli in a bilateral rapid serial visual presentation (RSVP) task. Our indicators of asymmetry are shorter latencies and larger amplitudes of the right hemisphere (RH) P1 and N1 components of visual evoked potentials (VEPs). This VEP asymmetry might reflect either a RH advantage, possibly in early perceptual processing, or for familiar stimuli, or for directing attention, or might be a paradoxical reflection of left hemisphere specialization in letter processing...
January 20, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28107684/non-invasive-brain-stimulation-targeting-the-right-fusiform-gyrus-selectively-increases-working-memory-for-faces
#11
Tad T Brunyé, Joseph M Moran, Amanda Holmes, Caroline R Mahoney, Holly A Taylor
The human extrastriate cortex contains a region critically involved in face detection and memory, the right fusiform gyrus. The present study evaluated whether transcranial direct current stimulation (tDCS) targeting this anatomical region would selectively influence memory for faces versus non-face objects (houses). Anodal tDCS targeted the right fusiform gyrus (Brodmann's Area 37), with the anode at electrode site PO10, and cathode at FP2. Two stimulation conditions were compared in a repeated-measures design: 0...
January 17, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28088064/improved-cognition-while-cycling-in-parkinson-s-disease-patients-and-healthy-adults
#12
Audrey A Hazamy, Lori J P Altmann, Elizabeth Stegemöller, Dawn Bowers, Hyo Keun Lee, Jonathan Wilson, Michael S Okun, Chris J Hass
Persons with Parkinson's disease (PD) are typically more susceptible than healthy adults to impaired performance when two tasks (dual task interference) are performed simultaneously. This limitation has by many experts been attributed to limitations in cognitive resources. Nearly all studies of dual task performance in PD employ walking or balance-based motor tasks, which are commonly impaired in PD. These tasks can be performed using a combination of one or two executive function tasks. The current study examined whether persons with PD would demonstrate greater dual task effects (DTEs) on cognition compared to healthy older adults (HOAs) during a concurrent cycling task...
January 11, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28088063/verbal-and-musical-short-term-memory-variety-of-auditory-disorders-after-stroke
#13
Catherine Hirel, Norbert Nighoghossian, Yohana Lévêque, Salem Hannoun, Lesly Fornoni, Sébastien Daligault, Patrick Bouchet, Julien Jung, Barbara Tillmann, Anne Caclin
Auditory cognitive deficits after stroke may concern language and/or music processing, resulting in aphasia and/or amusia. The aim of the present study was to assess the potential deficits of auditory short-term memory for verbal and musical material after stroke and their underlying cerebral correlates with a Voxel-based Lesion Symptom Mapping approach (VLSM). Patients with an ischemic stroke in the right (N=10) or left (N=10) middle cerebral artery territory and matched control participants (N=14) were tested with a detailed neuropsychological assessment including global cognitive functions, music perception and language tasks...
January 11, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28064077/that-note-sounds-wrong-age-related-effects-in-processing-of-musical-expectation
#14
Andrea R Halpern, Ioanna Zioga, Martin Shankleman, Job Lindsen, Marcus T Pearce, Joydeep Bhattacharya
Part of musical understanding and enjoyment stems from the ability to accurately predict what note (or one of a small set of notes) is likely to follow after hearing the first part of a melody. Selective violation of expectations can add to aesthetic response but radical or frequent violations are likely to be disliked or not comprehended. In this study we investigated whether a lifetime of exposure to music among untrained older adults would enhance their reaction to unexpected endings of unfamiliar melodies...
January 5, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28027842/editorial-to-the-special-issue-on-perspectives-on-human-probabilistic-inference-and-the-bayesian-brain
#15
EDITORIAL
Johan Kwisthout, William A Phillips, Anil K Seth, Iris van Rooij, Andy Clark
No abstract text is available yet for this article.
December 24, 2016: Brain and Cognition
https://www.readbyqxmd.com/read/28038367/age-differences-in-gain-and-loss-motivated-attention
#16
Ryan S Williams, Anna Lena Biel, Benjamin J Dyson, Julia Spaniol
Adaptive gain theory (Aston-Jones & Cohen, 2005) suggests that the phasic release of norepinephrine (NE) to cortical areas reflects changes in the utility of ongoing tasks. In the context of aging, this theory raises interesting questions, given that the motivations of older adults differ from those of younger adults. According to socioemotional selectivity theory (Carstensen, Isaacowitz, & Charles, 1999), aging is associated with greater emphasis on emotion-regulation goals, leading older adults to prioritize positive over negative information...
February 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28038366/brain-networks-underlying-novel-metaphor-production
#17
Roger E Beaty, Paul J Silvia, Mathias Benedek
Metaphors are widely used to convey abstract concepts and emotions in the arts and everyday life. Neuroimaging research suggests that dynamic interactions among large-scale brain networks, including the default and executive control networks, support the production of such creative ideas. However, the extent to which these networks interact to support other forms of creative language production such as metaphor remains unknown. Using functional magnetic resonance imaging (fMRI), we explored this question by assessing functional interactions between brain regions during novel metaphor production...
February 2017: Brain and Cognition
https://www.readbyqxmd.com/read/27978450/musicians-react-faster-and-are-better-multisensory-integrators
#18
Simon P Landry, François Champoux
The results from numerous investigations suggest that musical training might enhance how senses interact. Despite repeated confirmation of anatomical and structural changes in visual, tactile, and auditory regions, significant changes have only been reported in the audiovisual domain and for the detection of audio-tactile incongruencies. In the present study, we aim at testing whether long-term musical training might also enhance other multisensory processes at a behavioural level. An audio-tactile reaction time task was administrated to a group of musicians and non-musicians...
February 2017: Brain and Cognition
https://www.readbyqxmd.com/read/27940303/neural-representation-of-a-melodic-motif-effects-of-polyphonic-contexts
#19
Madeline Huberth, Takako Fujioka
In music, a melodic motif is often played repeatedly in different pitch ranges and at different times. Event-related potential (ERP) studies have shown that the mismatch negativity (MMN) reflects memory trace processing that encodes two separate melodic lines ("voices") with different motifs. Here we investigated whether a single motif presented in two voices is encoded as a single entity or two separate entities, and whether motifs overlapping in time impede or enhance encoding strength. Electroencephalogram (EEG) from 11 musically-trained participants was recorded while they passively listened to sequences of 5-note motifs where the 5th note either descended (standard) or ascended (deviant) relative to the previous note (20% deviant rate)...
February 2017: Brain and Cognition
https://www.readbyqxmd.com/read/27923149/the-effect-of-cerebral-asymmetries-and-eye-scanning-on-pseudoneglect-for-a-visual-search-task
#20
Michael E R Nicholls, Amelia Hobson, Joanne Petty, Owen Churches, Nicole A Thomas
Pseudoneglect is the tendency for the general population to over-attend to the left. While pseudoneglect is classically demonstrated using line bisection, it also occurs for visual search. The current study explored the influence of eye movements and functional cerebral asymmetry on asymmetries for visual search. In Experiment 1, 24 participants carried out a conjunction search for a target within a rectangular array. A leftward advantage for detecting targets was observed when the eyes were free to move, but not when they were restricted by short exposure durations...
February 2017: Brain and Cognition
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