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Parietal Lobe

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161. Occipital Lobe

is the one of five lobes of the cerebral hemisphere which occupies the posterior-most portion of the hemisphere. Anteriorly, it shares an arbitrary border with the parietal lobe and temporal lobe. Medially, it is bounded by the longitudinal cerebral fissure. Definition (NCI) The posterior part of the cerebral hemisphere. (MeSH) Definition (NCI_CDISC) The posterior part of the cerebral hemisphere. (MeSH) Definition (MSH) Posterior portion of the CEREBRAL HEMISPHERES responsible for processing visual (...) Occipital Lobe Occipital Lobe Toggle navigation Brain Head & Neck Chest Endocrine Abdomen Musculoskeletal Skin Infectious Disease Hematology & Oncology Cohorts Diagnostics Emergency Findings Procedures Prevention & Management Pharmacy Resuscitation Trauma Emergency Procedures Ultrasound Cardiovascular Emergencies Lung Emergencies Infectious Disease Pediatrics Neurologic Emergencies Skin Exposure Miscellaneous Abuse Cancer Administration 4 Occipital Lobe Occipital Lobe Aka: Occipital Lobe

2015 FP Notebook

162. Temporal Lobe

border shared with the occipital lobe. Definition (CHV) the lower lateral lobe of either cerebral hemisphere Definition (CHV) the lower lateral lobe of either cerebral hemisphere Definition (CHV) the lower lateral lobe of either cerebral hemisphere Definition (CHV) the lower lateral lobe of either cerebral hemisphere Definition (NCI_CDISC) Lower lateral part of the cerebral hemisphere. (MSH2001) Definition (NCI) One of the cerebral lobes. It is located inferior to the frontal and parietal lobes (...) Temporal Lobe Temporal Lobe Toggle navigation Brain Head & Neck Chest Endocrine Abdomen Musculoskeletal Skin Infectious Disease Hematology & Oncology Cohorts Diagnostics Emergency Findings Procedures Prevention & Management Pharmacy Resuscitation Trauma Emergency Procedures Ultrasound Cardiovascular Emergencies Lung Emergencies Infectious Disease Pediatrics Neurologic Emergencies Skin Exposure Miscellaneous Abuse Cancer Administration 4 Temporal Lobe Temporal Lobe Aka: Temporal Lobe , Temporal

2015 FP Notebook

163. Frontal Lobe

window. Related Studies (from Trip Database) Ontology: frontal lobe (C0016733) Definition (FMA) Frontal lobe is the anterior-most of five lobes of the cerebral hemisphere. It is bounded by the central sulcus on its posterior border and by the longitudinal cerebral fissure on its medial border. Definition (NCI) The part of the brain located anterior to the parietal lobes at the front of each cerebral hemisphere. Definition (NCI_CDISC) The part of the brain located anterior to the parietal lobes (...) Frontal Lobe Frontal Lobe Toggle navigation Brain Head & Neck Chest Endocrine Abdomen Musculoskeletal Skin Infectious Disease Hematology & Oncology Cohorts Diagnostics Emergency Findings Procedures Prevention & Management Pharmacy Resuscitation Trauma Emergency Procedures Ultrasound Cardiovascular Emergencies Lung Emergencies Infectious Disease Pediatrics Neurologic Emergencies Skin Exposure Miscellaneous Abuse Cancer Administration 4 Frontal Lobe Frontal Lobe Aka: Frontal Lobe , Cerebral

2015 FP Notebook

164. Hyperactivation of parahippocampal region and fusiform gyrus associated with successful encoding in medial temporal lobe epilepsy. (PubMed)

Hyperactivation of parahippocampal region and fusiform gyrus associated with successful encoding in medial temporal lobe epilepsy. Performance in recognition memory differs among patients with medial temporal lobe epilepsy (MTLE). We aimed to determine if distinct recognition performances (normal vs. impaired) could be related to distinct patterns of brain activation during encoding.Event-related functional magnetic resonance imaging (fMRI) activation profiles were obtained during successful (...) exhibited normal performance relative to controls. In comparison to healthy subjects and patients with impaired recognition, patients with normal recognition showed weaker activations in left opercular cortex, but stronger activations in bilateral parahippocampal region/fusiform gyrus (PH/FG). By contrast, patients with impaired performance showed weaker activations in bilateral PH/FG, but stronger activations in a frontal/cingulate and parietal network. Recognition performance was correlated positively

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2011 Epilepsia

165. Widespread cortical thinning in children with frontal lobe epilepsy. (PubMed)

Widespread cortical thinning in children with frontal lobe epilepsy. Spread of seizure activity outside the frontal lobe due to cortico-cortical connections can result in alteration in the cortex beyond the frontal lobe in children with intractable frontal lobe epilepsy (FLE). The aim of this study was to identify regions of reduced cortical thickness in children with intractable FLE.High-resolution volumetric T(1)-weighted imaging was performed on 17 children with FLE, who were being evaluated (...) for epilepsy surgery, and 26 age-matched healthy controls. The cortical thickness of 12 patients with left FLE and 5 patients with right FLE was compared to controls. The clusters of cortical thinning were regressed against age of seizure onset, duration of epilepsy, seizure frequency, and number of medications.In children with left FLE, cortical thinning was present in the left superior frontal, paracentral, precuneus, cingulate, inferior parietal, supramarginal, postcentral, and superior temporal gyri

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2011 Epilepsia

166. Increased anterior cingulate and temporal lobe activity during visuospatial working memory in children and adolescents with schizophrenia. (PubMed)

at all three WkM loads. On functional imaging, EOS patients demonstrated increased activation in the anterior cingulate cortex (ACC), medial temporal lobe structures, the insula, and bilateral lateral temporal lobes.Patients with EOS demonstrate increased activity in limbic structures and regions involved in processing primary and secondary sensory information. In addition, EOS patients had load dependent decreased activity in the parietal lobe. Unlike studies in adults, we did not find that EOS (...) Increased anterior cingulate and temporal lobe activity during visuospatial working memory in children and adolescents with schizophrenia. Similar to adults, children and adolescents with schizophrenia present with significant working memory (WkM) deficits. However, unlike adults, findings of abnormal activity in the prefrontal cortex in early-onset schizophrenia (EOS) are not consistently reported. Since WkM continues to develop through adolescence and into early adulthood, patterns

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2011 Schizophrenia Research

167. Neocortical thinning in "benign" mesial temporal lobe epilepsy. (PubMed)

Neocortical thinning in "benign" mesial temporal lobe epilepsy. In refractory mesial temporal lobe epilepsy (MTLE) extrahippocampal and neocortical abnormalities have been described in patients with or without mesial temporal sclerosis (MTS). Recently we observed gray matter reductions in regions outside the hippocampus in benign MTLE with or without MTS. Cortical thickness has been proposed as a viable methodologic alternative for assessment of neuropathologic changes in extratemporal regions (...) ). Other areas were localized in the occipital cortex, left supramarginal gyrus, left superior parietal gyrus, left paracentral sulcus, left inferior/middle/superior frontal gyrus, left inferior frontal sulcus, right cingulate cortex, right superior frontal gyrus, right inferior parietal gyrus, right fusiform gyrus, and cuneus/precuneus. In the nMTLE, a similar neurodegenerative pattern was detected, although not surviving correction for multiple comparisons. Direct comparison between pMTLE and nMTLE

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2011 Epilepsia

168. The Riddoch phenomenon revealed in non-occipital lobe lesions. (PubMed)

Optic Atrophy complications Parietal Lobe Visual Acuity Visual Field Tests Visual Fields 1971 6 1 1971 6 1 0 1 1971 6 1 0 0 ppublish 5090280 PMC1208387 Doc Ophthalmol. 1969;26:215-29 5359517 Am J Ophthalmol. 1970 Sep;70(3):403-22 5450849 Brain. 1953;76(4):515-50 13115572 (...) The Riddoch phenomenon revealed in non-occipital lobe lesions. 5090280 1971 08 13 2018 11 13 0007-1161 55 6 1971 Jun The British journal of ophthalmology Br J Ophthalmol The Riddoch phenomenon revealed in non-occipital lobe lesions. 416-20 Zappia R J RJ Enoch J M JM Stamper R R Winkelman J Z JZ Gay A J AJ eng Journal Article England Br J Ophthalmol 0421041 0007-1161 IM Adult Brain Diseases Carotid Artery Diseases complications Female Hemianopsia Humans Male Methods Middle Aged Occipital Lobe

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1971 The British journal of ophthalmology

169. A Parcellation Scheme for Human Left Lateral Parietal Cortex (PubMed)

A Parcellation Scheme for Human Left Lateral Parietal Cortex The parietal lobe has long been viewed as a collection of architectonic and functional subdivisions. Though much parietal research has focused on mechanisms of visuospatial attention and control-related processes, more recent functional neuroimaging studies of memory retrieval have reported greater activity in left lateral parietal cortex (LLPC) when items are correctly identified as previously studied ("old") versus unstudied ("new

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2010 Neuron

170. Restlessness with Manic Episodes due to Right Parietal Infarction (PubMed)

Restlessness with Manic Episodes due to Right Parietal Infarction Mood disorders following acute stroke are relatively common. However, restlessness with manic episodes has rarely been reported. Lesions responsible for post-stroke mania can be located in the thalamus, caudate nucleus, and temporal and frontal lobes. We present a patient who exhibited restlessness with manic episodes after an acute infarction in the right parietal lobe, and summarize the case reports involving post-stroke mania (...) . The right parietal stroke causing mania in our case is a novel observation that may help us to understand the mechanisms underlying restlessness with mania following acute stroke.

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2010 Journal of movement disorders

171. Human Parietal Cortex Structure Predicts Individual Differences in Perceptual Rivalry (PubMed)

structure can exhibit systematic relationships with an individual's cognitive experiences and skills [6-9]. To test this notion, we examined in a large group of individuals how cortical thickness, local gray-matter density, and local white-matter integrity correlate with individuals' alternation rate for a bistable, rotating structure-from-motion stimulus [10]. All of these macroscopic measures of brain structure consistently revealed that the structure of bilateral superior parietal lobes (SPL) could (...) Human Parietal Cortex Structure Predicts Individual Differences in Perceptual Rivalry When visual input has conflicting interpretations, conscious perception can alternate spontaneously between competing interpretations [1]. There is a large amount of unexplained variability between individuals in the rate of such spontaneous alternations in perception [2-5]. We hypothesized that variability in perceptual rivalry might be reflected in individual differences in brain structure, because brain

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2010 Current Biology

172. Spatial and non-spatial functions of the parietal cortex (PubMed)

according to the action, category, or reward associated with the stimulus. Other non-spatial inputs act independently, encoding the context or rules of a task even before the presentation of a specific target. Despite the ubiquity of non-spatial information in individual neurons, reversible inactivation of the parietal lobe affects only spatial orienting of attention and gaze, but not non-spatial aspects of performance. This suggests that non-spatial signals contribute to an underlying spatial (...) Spatial and non-spatial functions of the parietal cortex Although the parietal cortex is traditionally associated with spatial attention and sensorimotor integration, recent evidence also implicates it in higher order cognitive functions. We review relevant results from neuron recording studies showing that inferior parietal neurons integrate information regarding target location with a variety of non-spatial signals. Some of these signals are modulatory and alter a stimulus-evoked response

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2010 Current opinion in neurobiology

173. Double Dissociation of Format-Dependent and Number-Specific Neurons in Human Parietal Cortex (PubMed)

Double Dissociation of Format-Dependent and Number-Specific Neurons in Human Parietal Cortex Based on neuroimaging methods, it is a commonly held view that numerical representation in the human parietal lobes is format independent. We used a transcranial magnetic stimulation adaptation paradigm to examine the existence of functionally segregated overlapping populations of neurons for different numerical formats and to reveal how numerical information is encoded and represented. Based on 2 (...) experiments, we found that right parietal lobe stimulation showed a dissociation between digits and verbal numbers, whereas the left parietal lobe showed a double dissociation between the different numerical formats. Further analysis and modeling also excluded pre- or postrepresentational components as the source of the current effects. These results demonstrate that both parietal lobes are equipped with format-dependent neurons that encode quantity.

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2010 Cerebral Cortex (New York, NY)

174. Impaired consciousness in temporal lobe seizures: role of cortical slow activity. (PubMed)

). We observed significantly increased delta-range 1-2 Hz slow wave activity in the bilateral frontal and parietal neocortices during complex-partial compared with simple-partial seizures. In addition, we confirmed prior work suggesting that propagation of unilateral mesial temporal fast seizure activity to the bilateral temporal lobes was significantly greater in complex-partial than in simple-partial seizures. Interestingly, we found that the signal power of frontoparietal slow wave activity (...) Impaired consciousness in temporal lobe seizures: role of cortical slow activity. Impaired consciousness requires altered cortical function. This can occur either directly from disorders that impair widespread bilateral regions of the cortex or indirectly through effects on subcortical arousal systems. It has therefore long been puzzling why focal temporal lobe seizures so often impair consciousness. Early work suggested that altered consciousness may occur with bilateral or dominant temporal

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2010 Brain

175. Frontal lobe white matter hyperintensities and neurofibrillary pathology in the oldest old. (PubMed)

Frontal lobe white matter hyperintensities and neurofibrillary pathology in the oldest old. Current studies suggest an interaction between vascular mechanisms and neurodegenerative processes that leads to late-onset Alzheimer disease (AD). We tested whether AD pathology was associated with white matter hyperintensities (WMH) or cerebral infarcts in the oldest old individuals.Brains from 132 subjects over 85 years old, who came to autopsy from the Vantaa 85+ population-based cohort, were scanned (...) by postmortem MRI and examined for neuropathologic changes. Coronal images were analyzed to determine the degree of frontal and parietal periventricular WMH (PVWMH) and deep WMH (DWMH) and cerebral infarcts. Neuropathologic variables included Consortium to Establish a Registry for Alzheimer's Disease scores for neuritic plaques and Braak staging among subjects in 5 groups: normal aging (NA), borderline with insufficient AD pathology, AD, AD plus other pathology, and other primary degenerative

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2010 Neurology

176. Neuroanatomical correlates of psychosis in temporal lobe epilepsy: voxel-based morphometry study. (PubMed)

in those with temporal lobe epilepsy with psychosis in the temporal lobes in the inferior, middle and superior temporal gyri and fusiform gyri, and unilaterally in the left parahippocampal gyrus and hippocampus. Significant extratemporal grey matter reduction was found bilaterally in the insula, cerebellum, caudate nuclei and in the right cingulum and left inferior parietal lobule. Significant white matter reduction in those with temporal lobe epilepsy with psychosis was found bilaterally (...) Neuroanatomical correlates of psychosis in temporal lobe epilepsy: voxel-based morphometry study. Temporal lobe epilepsy is associated with a significant risk of psychosis but there are only limited studies investigating the underlying neurobiology.To characterise neuroanatomical changes in temporal lobe epilepsy and comorbid psychosis.The study population comprised all individuals with temporal lobe epilepsy on the epilepsy database at the National Centre for Epilepsy and Epilepsy Neurosurgery

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2010 British Journal of Psychiatry

177. Subjective rating of working memory is associated with frontal lobe volume in schizophrenia. (PubMed)

rating of working memory integrity in daily life and volumes of the frontal, temporal, and parietal lobes in patients with schizophrenia.Participants included 29 patients with schizophrenia and 26 healthy comparison subjects. Participants completed a structural magnetic resonance imaging (MRI) scan, the Self Report form of the Behavioral Rating Inventory of Executive Function - Adult version (BRIEF-A), and Digit Span Backwards as an objective measure of working memory. Lobar volumes were obtained (...) Subjective rating of working memory is associated with frontal lobe volume in schizophrenia. Patients with schizophrenia commonly show deficits in working memory on objective neuropsychological measures, and brain imaging studies have documented neural abnormalities during performance of working memory tasks. It remains unclear to what extent such patients are able to accurately gauge the integrity of their working memory in their daily lives.We evaluated the relationship between subjective

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2010 Schizophrenia Research

178. Temporal lobe abnormalities on brain MRI in healthy volunteers. A prospective case-control study. (PubMed)

. Images were reviewed independently by 2 neuroradiologists blinded to clinical information. Cortical atrophy and signal intensities in the amygdala, hippocampus, cingulate gyrus, subcallosal area, insula, temporal parietal, and occipital lobe were graded relative to cortical signal intensity in the frontal lobe. Intrarater and interrater reliability were also assessed.Interrater and intrarater measurements demonstrated consistent and repeatable results. Forty-seven of 99 (47.5%) patients showed either (...) Temporal lobe abnormalities on brain MRI in healthy volunteers. A prospective case-control study. To prospectively assess the frequency of mesiotemporal abnormalities seen on brain MRI in healthy subjects in comparison with patients with temporal lobe epilepsy (TLE).Ninety-nine consecutive patients (48 women, mean age 36.1 +/- 16.1 years; range 10 to 75) with TLE and 51 healthy volunteers (26 women, mean age 39.3 +/- 10.8 years) prospectively underwent the same MRI protocol, specific for TLE

2010 Neurology

179. The role of the right parietal lobe in anorexia nervosa. (PubMed)

The role of the right parietal lobe in anorexia nervosa. Patients with anorexia nervosa (AN) overestimate their size despite being severely underweight. Whether this misperception echoes an underlying emotional disturbance or also reflects a genuine body-representation deficit is debatable. Current measures inquire directly about subjective perception of body image, thus distinguishing poorly between top-down effects of emotions/attitudes towards the body and disturbances due to proprioceptive (...) disorders/distorted body schema. Disorders of body representation also emerge following damage to the right parietal lobe. The possibility that parietal dysfunction might contribute to AN is suspected, based on the demonstrated association of spatial impairments, comparable to those found after parietal lesion, with this syndrome.We used a behavioral task to compare body knowledge in severe anorexics (n=8), healthy volunteers (n=11) and stroke patients with focal damage to the left/right parietal lobe

2009 Psychological Medicine

180. The Contribution of the Parietal Lobes to Speaking and Writing (PubMed)

The Contribution of the Parietal Lobes to Speaking and Writing The left parietal lobe has been proposed as a major language area. However, parietal cortical function is more usually considered in terms of the control of actions, contributing both to attention and cross-modal integration of external and reafferent sensory cues. We used positron emission tomography to study normal subjects while they overtly generated narratives, both spoken and written. The purpose was to identify the parietal (...) cortex. The only parietal area with a pattern of activity compatible with an amodal central role in communication was the ventral part of the left angular gyrus (AG). The results of this study indicate that the cognitive processing of language within the parietal lobe is confined to the AG and that the major contribution of parietal cortex to communication is in the sensorimotor control of writing.

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2009 Cerebral Cortex (New York, NY)

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