scholarly journals GLIOTIC CYST OF THE RIGHT SUPERIOR PARIETAL LOBULE

1907 ◽  
Vol 64 (2) ◽  
pp. 299-304-1
Author(s):  
A. N. Collins ◽  
E. E. Southard
Keyword(s):  
Superior Parietal Lobule ◽  
Parietal Lobule ◽  
The Right

scholarly journals Transcranial Magnetic Stimulation of the Right Superior Parietal Lobule Modulates the Retro-Cue Benefit in Visual Short-Term Memory

2021 ◽  
Vol 11 (2) ◽  
pp. 252
Author(s):  
Fabiano Botta ◽  
Juan Lupiáñez ◽  
Valerio Santangelo ◽  
Elisa Martín-Arévalo
Keyword(s):  
Transcranial Magnetic Stimulation ◽  
Magnetic Stimulation ◽  
Short Term Memory ◽  
Superior Parietal Lobule ◽  
Spatial Cues ◽  
Short Term ◽  
Term Memory ◽  
Visual Short Term Memory ◽  
Parietal Lobule ◽  
The Right

Several studies have shown enhanced performance in change detection tasks when spatial cues indicating the probe’s location are presented after the memory array has disappeared (i.e., retro-cues) compared with spatial cues that are presented simultaneously with the test array (i.e., post-cues). This retro-cue benefit led some authors to propose the existence of two different stores of visual short-term memory: a weak but high-capacity store (fragile memory (FM)) linked to the effect of retro-cues and a robust but low-capacity store (working memory (WM)) linked to the effect of post-cues. The former is thought to be an attention-free system, whereas the latter would strictly depend on selective attention. Nonetheless, this dissociation is under debate, and several authors do not consider retro-cues as a proxy to measure the existence of an independent memory system (e.g., FM). We approached this controversial issue by altering the attention-related functions in the right superior parietal lobule (SPL) by transcranial magnetic stimulation (TMS), whose effects were mediated by the integrity of the right superior longitudinal fasciculus (SLF). Specifically, we asked whether TMS on the SPL affected the performance of retro cues vs. post-cues to a similar extent. The results showed that TMS on the SPL, mediated by right SLF-III integrity, produced a modulation of the retro-cue benefit, namely a memory capacity decrease in the post-cues but not in the retro-cues. These findings have strong implications for the debate on the existence of independent stages of visual short-term memory and for the growing literature showing a key role of the SLF for explaining the variability of TMS effects across participants.

The Role of the Right Superior Parietal Lobule in Processing Visual Context for the Establishment of the Egocentric Reference Frame

2014 ◽  
Vol 26 (10) ◽  
pp. 2201-2209 ◽  
Author(s):  
Benjamin D. Lester ◽  
Paul Dassonville
Keyword(s):  
Reference Frame ◽  
Visual Cues ◽  
Right Hemisphere ◽  
Superior Parietal Lobule ◽  
Spatial Cues ◽  
Tilt Illusion ◽  
Egocentric Reference Frame ◽  
Parietal Lobule ◽  
The Right ◽  
Rod And Frame

Visual cues contribute to the creation of an observer's egocentric reference frame, within which the locations and orientations of objects can be judged. However, these cues can also be misleading. In the rod-and-frame illusion, for example, a large tilted frame distorts the observer's sense of vertical, causing an enclosed rod to appear tilted in the opposite direction. To determine the brain region responsible for processing these spatial cues, we used TMS to suppress neural activity in the superior parietal lobule of healthy observers. Stimulation of the right hemisphere, but not the left, caused a significant reduction in rod-and-frame susceptibility. In contrast, a tilt illusion caused by a mechanism that does not involve a distortion of the observer's egocentric reference frame was unaffected. These results demonstrate that the right superior parietal lobule is actively involved in processing the contextual cues that contribute to our perception of egocentric space.

scholarly journals ML of Striatum rs-fMRI Features Predicts TLE Diagnosis

2021 ◽  
Author(s):  
Yanchun Jiang ◽  
Liluo Nie ◽  
yanbo zhang ◽  
huihua Liu ◽  
jinou Zheng
Keyword(s):  
Ventral Striatum ◽  
Clinical Decision Making ◽  
Anterior Cingulate ◽  
Middle Temporal Gyrus ◽  
Superior Parietal Lobule ◽  
Permutation Testing ◽  
Middle Temporal ◽  
Parietal Lobule ◽  
The Right ◽  
Prefrontal Lobe

Abstract Objective: To determine whether patients with temporal lobe epilepsy (TLE) exhibit aberrant resting-state functional magnetic resonance imaging (rs-fMRI)-functional connectivity and build an individualized TLE prediction model using ML (ML). Methods: Sixty TLE patients and fifty-one controls underwent rs-fMRI scanning. The striatum was divided into 12 striatal seeds. rs-FC was compared between groups to enable TLE classification based on striatal FC using the SPM12, SVM and PRONTO softwares. Bilateral striatal FC values were extracted and significance values were obtained using leave-one-out (LOO) SVM analysis and permutation testing (2,000) for cross-validation.Results: Patients with TLE exhibited a significantly decreased rs-FC between the left inferior ventral striatum and the right posterior central gyrus, left superior frontal gyrus;and between the left dorsal rostral putamen and right superior parietal lobule, right middle frontal gyrus. And between right dorsal caudate And left prefrontal lobe, and right middle temporal gyrus. rs-fMRI analysis a revealed significantly increased FC between the left inferior ventral striatum seed and right anterior cingulate in TLE patients (p<0.05). Right dorsal caudate FC may distinguish individuals with TLE from controls with 79.08% Accuracy, including a 72.77% Sensitivity and 76.44% Specificity, resulting in an AUC of 0.71 (p <0 .01). The areas informing classification included left prefrontal lobe, right middle temporal gyrus, and left superior parietal lobule.Conclusion: Our findings demonstrate aberrant FC in certain brain regions, such as the right dorsal caudate, may play an important role as potential biomarkers of TLE and highlight the utility of ML-based models for clinical decision making.

scholarly journals Alteration of Cortical and Subcortical Structures in Children With Profound Sensorineural Hearing Loss

2020 ◽  
Vol 14 ◽  
Author(s):  
Hang Qu ◽  
Hui Tang ◽  
Jiahao Pan ◽  
Yi Zhao ◽  
Wei Wang
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Magnetic Resonance Images ◽  
Sensorineural Hearing ◽  
Superior Parietal Lobule ◽  
Whole Brain ◽  
Functional Changes ◽  
Parietal Lobule ◽  
The Right ◽  
The Brain

Profound sensorineural hearing loss (SNHL) is an auditory disability associated with auditory and cognitive dysfunction. Due to distinct pathogenesis, some associated structural and functional changes within the brain have been investigated in previous studies, but whole-brain structural alterations are incompletely understood. We extended the exploration of neuroanatomic differences in whole-brain structure in children with profound SNHL who are primarily users of Chinese sign language (CSL). We employed surface-based morphometry (SBM) and subcortical analyses. T1-weighted magnetic resonance images of 26 children with profound SNHL and 27 age- and sex-matched children with normal hearing were analyzed. Compared with the normal control (NC) group, children with profound SNHL showed diverse structural changes in surface-based and subcortical analyses, including decreased cortical thickness in the left postcentral gyrus, superior parietal lobule, paracentral lobule, precuneus, the right transverse temporal gyri, and the middle temporal gyrus; a noticeable increase in the Local Gyrification Index (LGI) in the left precuneus and superior parietal lobule; and diverse changes in gray-matter volume (GMV) in different brain regions. Surface-based vertex analyses revealed regional contractions in the right thalamus, putamen, pallidum, and the brainstem of children with profound SNHL when compared with those in the NC group. Volumetric analyses showed decreased volumes of the right thalamus and pallidum in children with profound SNHL. Our data suggest that children with profound SNHL are associated with diffuse cerebral dysfunction to cortical and subcortical nuclei, and revealed neuroplastic reorganization in the precuneus, superior parietal lobule, and temporal gyrus. Our study provides robust evidence for changes in connectivity and structure in the brain associated with hearing loss.

Cyclothymic temperament and glucose metabolism in the right superior parietal lobule

2017 ◽  
Vol 270 ◽  
pp. 76-79 ◽  
Author(s):  
Koji Hatano ◽  
Takeshi Terao ◽  
Hirofumi Hirakawa ◽  
Kentaro Kohno ◽  
Yoshinori Mizokami ◽  
...  
Keyword(s):  
Glucose Metabolism ◽  
Superior Parietal Lobule ◽  
Parietal Lobule ◽  
The Right

scholarly journals Cerebral Structural Abnormalities and Their Associations With Peripheral Cytokine Levels in a Group of Untreated Patients With Nasopharyngeal Carcinoma

2021 ◽  
Vol 11 ◽  
Author(s):  
Yan Wang ◽  
Wenjing Zhang ◽  
Xin Wu ◽  
Xinmei Luo ◽  
Siyi Li ◽  
...  
Keyword(s):  
Depressive Symptoms ◽  
Nasopharyngeal Carcinoma ◽  
Surface Area ◽  
Rating Scale ◽  
Transforming Growth Factor ◽  
Precentral Gyrus ◽  
Superior Parietal Lobule ◽  
Brain Changes ◽  
Parietal Lobule ◽  
The Right

The current study is to characterize the alterations of peripheral cytokines and anatomical brain changes, and their relationships in untreated nasopharyngeal carcinoma (NPC) patients with depressive symptoms. Twenty-nine newly diagnosed NPC patients without any treatment and 46 matched healthy comparisons were recruited, scanned with high-resolution T1 images and assessed psychologically using Hamilton Rating Scale for Depression (HAMD). Serum levels of interleukin-1 beta (IL-1β), IL-2, IL-6, IL-8, IL-10, interferon-gamma (IFN-γ) and transforming growth factor-beta (TGF-β) were measured by quantitative chemiluminescence assay. Inter-group comparisons of anatomical brain measures were performed, and regions with significant inter-group differences were correlated to HAMD scores and cytokines in NPC patients. A subgroup analysis especially within NPC patients with depression was conducted to precisely characterize the associations among serum cytokines, brain changes and depressive symptoms. Relative to healthy subjects, NPC patients showed significantly decreased cortical thickness in the left parahippocampal gyrus, increased surface area in the right superior parietal lobule and precentral gyrus, and increased gray matter volume in the right postcentral gyrus, bilateral caudate nucleus and right thalamus, as well as significantly elevated IL-1β, IL-2 and IL-10. The elevated IL-2 and IL-10 were negatively correlated with surface area in right superior parietal lobule, whilst IL-1β level was positively correlated to HAMD scores. In patients with depression, specific brain changes and evaluated IL-1β were identified, and the IL-1β interacted with right precentral gyrus to significantly affect the depressive symptoms. Our findings provide novel evidence indicating potential effects of inflammation on brain structure and behavior in NPC patients.

Human Superior Parietal Lobule Is Involved in Somatic Perception of Bimanual Interaction With an External Object

2008 ◽  
Vol 99 (2) ◽  
pp. 695-703 ◽  
Author(s):  
Eiichi Naito ◽  
Filip Scheperjans ◽  
Simon B. Eickhoff ◽  
Katrin Amunts ◽  
Per E. Roland ◽  
...  
Keyword(s):  
Spatial Relationship ◽  
Brain Structures ◽  
Skin Surface ◽  
External Object ◽  
Superior Parietal Lobule ◽  
Object A ◽  
Bimanual Interaction ◽  
External Objects ◽  
Parietal Lobule ◽  
The Right

The question of how the brain represents the spatial relationship between the own body and external objects is fundamental. Here we investigate the neural correlates of the somatic perception of bimanual interaction with an external object. A novel bodily illusion was used in conjunction with functional magnetic resonance imaging (fMRI). During fMRI scanning, seven blindfolded right-handed participants held a cylinder between the palms of the two hands while the tendon of the right wrist extensor muscle was vibrated. This elicited a kinesthetic illusion that the right hand was flexing and that the hand-held cylinder was shrinking from the right side. As controls, we vibrated the skin surface over the nearby bone beside the tendon or vibrated the tendon when the hands were not holding the object. Neither control condition elicited this illusion. The significance of the illusion was also confirmed in supplementary experiments outside the scanner on another 16 participants. The “bimanual shrinking-object illusion” activated anterior parts of the superior parietal lobule (SPL) bilaterally. This region has never been activated in previous studies on unimanual hand or hand-object illusion. The illusion also activated left-hemispheric brain structures including area 2 and inferior parietal lobule, an area related to illusory unimanual hand-object interaction between a vibrated hand and a touched object in our previous study. The anterior SPL seems to be involved in the somatic perception of bimanual interaction with an external object probably by computing the spatial relationship between the two hands and a hand-held object.

scholarly journals Disconnection of the right superior parietal lobule from the precuneus is associated with memory impairment in oldest-old Alzheimer's disease patients

Heliyon ◽  
2020 ◽  
Vol 6 (7) ◽  
pp. e04516
Author(s):  
Pukovisa Prawiroharjo ◽  
Ken-ichiro Yamashita ◽  
Koji Yamashita ◽  
Osamu Togao ◽  
Akio Hiwatashi ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Memory Impairment ◽  
Oldest Old ◽  
Superior Parietal Lobule ◽  
Parietal Lobule ◽  
The Right ◽  
With Memory
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