keyword
MENU ▼
Read by QxMD icon Read
search

Inferior parietal lobule

keyword
https://www.readbyqxmd.com/read/29045599/a-modulatory-effect-of-brief-passive-exposure-to-non-linguistic-sounds-on-intrinsic-functional-connectivity-relevance-to-cognitive-performance
#1
Maki S Koyama, Silvia Ortiz-Mantilla, Cynthia P Roesler, Michael P Milham, April A Benasich
A growing literature on resting-state fMRI (R-fMRI) has explored the impact of preceding sensory experience on intrinsic functional connectivity (iFC). However, it remains largely unknown how passive exposure to irrelevant auditory stimuli, which is a constant in everyday life, reconfigures iFC. Here, we directly compared pre- and post-exposure R-fMRI scans to examine: 1) modulatory effects of brief passive exposure to repeating non-linguistic sounds on subsequent iFC, and 2) associations between iFC modulations and cognitive abilities...
October 17, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29031463/changes-in-brain-activity-during-action-observation-and-motor-imagery-their-relationship-with-motor-learning
#2
Nobuaki Mizuguchi, Kazuyuki Kanosue
Many studies have demonstrated that training utilizing action observation and/or motor imagery improves motor performance. These two techniques are widely used in sports and in the rehabilitation of movement-related disorders. Motor imagery has also been used for brain-machine/computer interfaces (BMI/BCI). During both action observation and motor imagery, motor-related regions such as the premotor cortex and inferior parietal lobule are activated. This is common to actual execution and are involved with the underlying mechanisms of motor learning without execution...
2017: Progress in Brain Research
https://www.readbyqxmd.com/read/29018338/altered-distant-synchronization-of-background-network-in-mild-cognitive-impairment-during-an-executive-function-task
#3
Pengyun Wang, Rui Li, Jing Yu, Zirui Huang, Zhixiong Yan, Ke Zhao, Juan Li
Few studies to date have investigated the background network in the cognitive state relying on executive function in mild cognitive impairment (MCI) patients. Using the index of degree of centrality (DC), we explored distant synchronization of background network in MCI during a hybrid delayed-match-to-sample task (DMST), which mainly relies on the working memory component of executive function. We observed significant interactions between group and cognitive state in the bilateral posterior cingulate cortex (PCC) and the ventral subregion of precuneus...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28994360/effects-of-childhood-trauma-on-left-inferior-frontal-gyrus-function-during-response-inhibition-across-psychotic-disorders
#4
Y Quidé, N O'Reilly, O J Watkeys, V J Carr, M J Green
BACKGROUND: Childhood trauma is a risk factor for psychosis. Deficits in response inhibition are common to psychosis and trauma-exposed populations, and associated brain functions may be affected by trauma exposure in psychotic disorders. We aimed to identify the influence of trauma-exposure on brain activation and functional connectivity during a response inhibition task. METHODS: We used functional magnetic resonance imaging to examine brain function within regions-of-interest [left and right inferior frontal gyrus (IFG), right dorsolateral prefrontal cortex, right supplementary motor area, right inferior parietal lobule and dorsal anterior cingulate cortex], during the performance of a Go/No-Go Flanker task, in 112 clinical cases with psychotic disorders and 53 healthy controls (HCs)...
October 10, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28987668/abnormal-brain-function-in-neuromyelitis-optica-a-fmri-investigation-of-mpasat
#5
Fei Wang, Yaou Liu, Jianjun Li, Matthew Sondag, Meng Law, Chi-Shing Zee, Huiqing Dong, Kuncheng Li
PURPOSE: Cognitive impairment with the Neuromyelitis Optica (NMO) patients is debated. The present study is to study patterns of brain activation in NMO patients during a pair of task-related fMRI. MATERIALS AND METHODS: We studied 20 patients with NMO and 20 control subjects matched for age, gender, education and handedness. All patients with NMO met the 2006 Wingerchuk diagnostic criteria. The fMRI paradigm included an auditory attention monitoring task and a modified version of the Paced Auditory Serial Addition Task (mPASAT)...
October 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28983610/network-centrality-in-patients-with-acute-unilateral-open-globe-injury-a-voxel%C3%A2-wise-degree-centrality-study
#6
Hua Wang, Ting Chen, Lei Ye, Qi-Chen Yang, Rong Wei, Ying Zhang, Nan Jiang, Yi Shao
The present study aimed to investigate functional networks underlying brain‑activity alterations in patients with acute unilateral open globe injury (OGI) and associations with their clinical features using the voxel‑wise degree centrality (DC) method. In total, 18 patients with acute OGI (16 males and 2 females), and 18 healthy subjects (16 males and 2 females), closely matched in age, sex and education, participated in the present study. Each subject underwent a resting‑state functional magnetic resonance imaging scan...
September 26, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28981837/neural-correlates-of-empathic-accuracy-in-adolescence
#7
Tammi R A Kral, Enrique Solis, Jeanette A Mumford, Brianna S Schuyler, Lisa Flook, Katharine Rifken, Elena G Patsenko, Richard J Davidson
Empathy, the ability to understand others' emotions, can occur through perspective taking and experience sharing. Neural systems active when adults empathize include regions underlying perspective taking (e.g. medial prefrontal cortex; MPFC), and experience sharing (e.g. inferior parietal lobule; IPL). It is unknown whether adolescents utilize networks implicated in both experience sharing and perspective taking when accurately empathizing. This question is critical given the importance of accurately understanding others' emotions for developing and maintaining adaptive peer relationships during adolescence...
September 7, 2017: Social Cognitive and Affective Neuroscience
https://www.readbyqxmd.com/read/28980133/time-is-nothing-emotional-consistency-of-autobiographical-memory-and-its-neural-basis
#8
Rui Xu, Juan Yang, Chunliang Feng, Haiyan Wu, Ruiwang Huang, Qiuli Yang, Zhihao Li, Pengfei Xu, Ruolei Gu, Yue-Jia Luo
The emotional aspect of autobiographical memories (AMs) is associated with self-related processing, which plays an important role in mental health. However, the emotional consistency dimension of AMs and its neural underpinnings remain largely unexplored. Twenty-five healthy participants were involved in this study. Participants were first asked to recall important AMs and assess the emotional ratings of each AM. Four weeks later, they were asked to retrieve the details of both positive and negative AMs during functional magnetic resonance imaging (fMRI) scanning...
October 4, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/28975729/brain-processing-of-rectal-sensation-in-adolescents-with-functional-defecation-disorders-and-healthy-controls
#9
S M Mugie, I J N Koppen, M M van den Berg, P F C Groot, L Reneman, M B de Ruiter, M A Benninga
BACKGROUND: Decreased sensation of urge to defecate is often reported by children with functional constipation (FC) and functional nonretentive fecal incontinence (FNRFI). The aim of this cross-sectional study was to evaluate cerebral activity in response to rectal distension in adolescents with FC and FNRFI compared with healthy controls (HCs). METHODS: We included 15 adolescents with FC, 10 adolescents with FNRFI, and 15 young adult HCs. Rectal barostat was performed prior to functional magnetic resonance imaging (fMRI) to determine individual pressure thresholds for urge sensation...
October 4, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28974380/neural-evidence-for-defective-top-down-control-of-visual-processing-in-parkinson-s-and-alzheimer-s-disease
#10
Nela Nemcova Elfmarkova, Martin Gajdos, Irena Rektorova, Radek Marecek, Steven Z Rapcsak
INTRODUCTION: We used a functional MRI paradigm involving conventional vs. unconventional views of objects to assess bottom-up vs. top-down visual processing in Parkinson's disease (PD) with normal cognition, PD with mild cognitive impairment (MCI), and MCI due to Alzheimer's disease (AD) as compared to healthy controls. We particularly aimed at determining whether the task discriminated between PD with and without MCI and between two MCI groups due to distinct pathologies (AD and PD)...
September 30, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28970144/habit-strength-is-predicted-by-activity-dynamics-in-goal-directed-brain-systems-during-training
#11
Katharina Zwosta, Hannes Ruge, Thomas Goschke, Uta Wolfensteller
Previous neuroscientific research revealed insights into the brain networks supporting goal-directed and habitual behavior, respectively. However, it remains unclear how these contribute to inter-individual differences in habit strength which is relevant for understanding not only normal behavior but also more severe dysregulations between these types of action control, such as in addiction. In the present fMRI study, we trained subjects on approach and avoidance behavior for an extended period of time before testing the habit strength of the acquired stimulus-response associations...
September 29, 2017: NeuroImage
https://www.readbyqxmd.com/read/28968658/task-general-and-acoustic-invariant-neural-representation-of-speech-categories-in-the-human-brain
#12
Gangyi Feng, Zhenzhong Gan, Suiping Wang, Patrick C M Wong, Bharath Chandrasekaran
A significant neural challenge in speech perception includes extracting discrete phonetic categories from continuous and multidimensional signals despite varying task demands and surface-acoustic variability. While neural representations of speech categories have been previously identified in frontal and posterior temporal-parietal regions, the task dependency and dimensional specificity of these neural representations are still unclear. Here, we asked native Mandarin participants to listen to speech syllables carrying 4 distinct lexical tone categories across passive listening, repetition, and categorization tasks while they underwent functional magnetic resonance imaging (fMRI)...
August 28, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28968653/development-of-right-hemispheric-dominance-of-inferior-parietal-lobule-in-proprioceptive-illusion-task
#13
Eiichi Naito, Tomoyo Morita, Daisuke N Saito, Midori Ban, Koji Shimada, Yuko Okamoto, Hirotaka Kosaka, Hidehiko Okazawa, Minoru Asada
Functional lateralization can be an indicator of brain maturation. We have consistently shown that, in the adult brain, proprioceptive processing of muscle spindle afferents generating illusory movement of the right hand activates inferior frontoparietal cortical regions in a right-side dominant manner in addition to the cerebrocerebellar motor network. Here we provide novel evidence regarding the development of the right-dominant use of the inferior frontoparietal cortical regions in humans using this task...
August 31, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28967282/resting-state-functional-connectivity-signature-of-treatment-effects-of-rtms-in-mal-de-debarquement-syndrome
#14
Han Yuan, Guofa Shou, Diamond Urbano, Lei Ding, Yoon-Hee Cha
Repetitive transcranial magnetic stimulation (rTMS) has been used in experimental protocols to treat Mal de Debarquement Syndrome (MdDS), a neurological condition that represents a maladaptive brain state resulting from entrainment to external oscillating motion. Medical treatments and biomarkers for MdDS remain limited but neuromodulation with rTMS has shown evidence for therapeutic effects. The current study took a neuroimaging approach to examine the neuromodulatory effect of rTMS on MdDS. Twenty individuals with MdDS underwent five daily treatments of rTMS over bilateral dorsolateral prefrontal cortex (DLPFC)...
October 1, 2017: Brain Connectivity
https://www.readbyqxmd.com/read/28962104/altered-functional-connectivity-in-patients-with-post-stroke-memory-impairment-a-resting-fmri-study
#15
Jiao Liu, Qin Wang, Feiwen Liu, Haiyan Song, Xiaofeng Liang, Zhengkun Lin, Wenjun Hong, Shanli Yang, Jia Huang, Guohua Zheng, Jing Tao, Li-Dian Chen
Post-stroke memory dysfunction (PMD) is one of the most common forms of cognitive impairment among stroke survivors. However, only a limited number of studies have directly investigated the neural mechanisms associated with memory decline. The aim of the present study was to identify dynamic changes in the functional organization of the default mode network (DMN) and the dorsal attention network of patients with PMD. A total of 27 patients with PMD who experienced a stroke in the right hemisphere were enrolled in the current study, along with 27 healthy control subjects matched by age, sex, and educational level...
September 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28955725/a-brief-exposure-to-leftward-prismatic-adaptation-enhances-the-representation-of-the-ipsilateral-right-visual-field-in-the-right-inferior-parietal-lobule
#16
Sonia Crottaz-Herbette, Eleonora Fornari, Isabel Tissieres, Stephanie Clarke
A brief exposure to rightward prismatic adaptation (PA) was shown to shift visual field representation within the inferior parietal lobule (IPL) from the right to the left hemisphere. This change in hemispheric dominance could be interpreted as (1) a general effect of discrepancy in visuomotor alignment caused by PA or (2) a direction-specific effect of rightward PA. To test these hypotheses, we compared the effects of rightward and leftward PA on visual representation in normal human subjects. Three groups of normal subjects underwent an fMRI evaluation using a simple visual detection task before and after brief PA exposure using leftward- or rightward-deviating prisms or no prisms (L-PA, R-PA, neutral groups)...
September 2017: ENeuro
https://www.readbyqxmd.com/read/28951450/top-down-modulation-of-auditory-motor-integration-during-speech-production-the-role-of-working-memory
#17
Zhiqiang Guo, Xiuqin Wu, Weifeng Li, Jeffery A Jones, Nan Yan, Stanley Sheft, Peng Liu, Hanjun Liu
Although working memory (WM) is considered as an emergent property of the speech perception and production systems, the role of WM in sensorimotor integration during speech processing is largely unknown. We conducted two event-related potential experiments with female and male young adults to investigate the contribution of WM to the neurobehavioural processing of altered auditory feedback during vocal production. A delayed match-to-sample task that required participants to indicate whether the pitch feedback perturbations they heard during vocalizations in test and sample sequences matched, elicited significantly larger vocal compensations, larger N1 responses in the left middle and superior temporal gyrus, and smaller P2 responses in the left middle and superior temporal gyrus, inferior parietal lobule, somatosensory cortex, right inferior frontal gyrus and insula as compared to a control task that did not require memory retention of the sequence of pitch perturbations...
September 26, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28951165/neural-activity-associated-with-repetitive-simulation-of-episodic-counterfactual-thoughts
#18
Felipe De Brigard, Natasha Parikh, Gregory W Stewart, Karl K Szpunar, Daniel L Schacter
When people revisit past autobiographical events they often imagine alternative ways in which such events could have occurred. Often these episodic counterfactual thoughts (eCFT) are momentary and fleeting, but sometimes they are simulated frequently and repeatedly. However, little is known about the neural differences between frequently versus infrequently repeated eCFT. The current study explores this issue. In a three-session study, participants were asked to simulate alternative ways positive, negative, and neutral autobiographical memories could have occurred...
September 23, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28947393/alterations-of-the-amplitude-of-low-frequency-fluctuation-in-healthy-subjects-with-theta-burst-stimulation-of-the-cortex-of-the-suprahyoid-muscles
#19
Xiuhang Ruan, Guangqing Xu, Cuihua Gao, Lingling Liu, Yanli Liu, Lisheng Jiang, Xin Chen, Shaode Yu, Xinqing Jiang, Yue Lan, Xinhua Wei
Theta burst stimulation (TBS) has emerged as a promising tool for the treatment of swallowing disorders; however, the short-term after-effects of brain activation induced by TBS remain unknown. Here, we measured the changes in spontaneous brain activation using the amplitude of low-frequency fluctuation (ALFF) approach in subjects who underwent different TBS protocols. Sixty right-handed healthy participants (male, n=30; female, n=30; mean age=23.5y) were recruited in this study and randomly assigned to three groups that underwent three different TBS protocols...
September 23, 2017: Neuroscience
https://www.readbyqxmd.com/read/28938222/inter-hemispherical-asymmetry-in-default-mode-functional-connectivity-and-baiap2-gene-are-associated-with-anger-expression-in-adhd-adults
#20
R Hasler, M G Preti, D E Meskaldji, J Prados, W Adouan, C Rodriguez, S Toma, N Hiller, T Ismaili, J Hofmeister, I Sinanaj, P Baud, S Haller, P Giannakopoulos, S Schwartz, N Perroud, D Van De Ville
Attention deficit hyperactivity disorder (ADHD) is accompanied by resting-state alterations, including abnormal activity, connectivity and asymmetry of the default-mode network (DMN). Concurrently, recent studies suggested a link between ADHD and the presence of polymorphisms within the gene BAIAP2 (i.e., brain-specific angiogenesis inhibitor 1-associated protein 2), known to be differentially expressed in brain hemispheres. The clinical and neuroimaging correlates of this polymorphism are still unknown. We investigated the association between BAIAP2 polymorphisms and DMN functional connectivity (FC) asymmetry as well as behavioral measures in ADHD adults...
September 12, 2017: Psychiatry Research
keyword
keyword
37355
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"