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PubMed Journals Articles About "Cortex Technology" RSS

21:31 EST 13th December 2017 | BioPortfolio

Cortex Technology PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Cortex Technology articles that have been published worldwide.

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Showing "Cortex Technology" PubMed Articles 1–25 of 6,300+

Posterior parietal cortex.

The posterior parietal cortex, along with temporal and prefrontal cortices, is one of the three major associative regions in the cortex of the mammalian brain. It is situated between the visual cortex at the caudal pole of the brain and the somatosensory cortex just behind the central sulcus. Technically, any cortex covered by the parietal bone is referred to as 'parietal cortex', but the posterior sector, formally referred to as posterior parietal cortex, is indeed its own functional section of cortex, con...


So You Think You Don't Plunge? An Assessment of Far Cortex Drill Tip Plunging Based on Level of Training.

Drill bit tip plunging past the far cortex places critical anatomical structures at risk. This study measured plunging past the far cortex based on level of training. The time required for screw placement when a depth gauge was used to measure bone tunnel depth was compared to the time required for screw placement when bone tunnel depth was measured in real time.

Development of rat female genital cortex and control of female puberty by sexual touch.

Rat somatosensory cortex contains a large sexually monomorphic genital representation. Genital cortex undergoes an unusual 2-fold expansion during puberty. Here, we investigate genital cortex development and female rat sexual maturation. Ovariectomies and estradiol injections suggested sex hormones cause the pubertal genital cortex expansion but not its maintenance at adult size. Genital cortex expanded by thalamic afferents invading surrounding dysgranular cortex. Genital touch was a dominant factor drivin...


Prefrontal Cortex: A Mystery of Belated Memories.

A recent study suggests that the prefrontal cortex gradually becomes critical as a storage site for remotely acquired memories. How do we interpret this observation in light of the well-known functional role of the prefrontal cortex in cognition and memory?

Rapid identification and global characterization of multiple constituents from the essential oil of Cortex Dictamni based on GC-MS.

The root of Dictamnus dasycarpus Turcz., also known as Cortex Dictamni, is a Chinese herbal medicine commonly used in the treatment of inflammation, microbial infection, cancer and other diseases in China for thousands of years. Recently, the essential oil of Cortex Dictamni has been widely studied and a large number of volatile constituents have been discovered. However, the research of the essential oil of Cortex Dictamni in vivo remains unknown, especially the constituents absorbed into blood after oral ...

Differential Patterns of Subcortical Activity Evoked by Glial GLT-1 Blockade in Prelimbic and Infralimbic Cortex: Relationship to Antidepressant-Like Effects in Rats.

Glutamatergic neurotransmission has emerged as a novel target in antidepressant drug development, with a critical role of the ventral anterior cingulate cortex. We recently reported that blockade of the astrocytic glutamate transporter GLT-1 with dihydrokainic acid in infralimbic cortex (rodent equivalent of ventral anterior cingulate cortex), but not in the adjacent prelimbic cortex, evoked robust antidepressant-like effects through α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor activation ...

Unfolding the Folding Problem of the Cerebral Cortex: Movin' and Groovin'.

The development of reproducible folding in the gyrencephalic cerebral cortex is a topic of great interest to neuroscientists. In a recent paper in Cell, del Toro et al. (2017) show that changing the adhesive properties of neurons in the normally lissencephalic mouse cortex leads to the formation of stereotyped folding.

Visual cortex activation decrement following cochlear implantation in prelingual deafened children.

Visual take-over of the auditory cortex in prelingual deaf children has been widely reported. However, there have been few studies on visual cortex plasticity after cochlear implantation (CI). In this study, we investigated the hypothesis that extrinsic auditory stimulation following CI in prelingual deafened children can induce visual cortex plasticity.

Learning in the Rodent Motor Cortex.

The motor cortex is far from a stable conduit for motor commands and instead undergoes significant changes during learning. An understanding of motor cortex plasticity has been advanced greatly using rodents as experimental animals. Two major focuses of this research have been on the connectivity and activity of the motor cortex. The motor cortex exhibits structural changes in response to learning, and substantial evidence has implicated the local formation and maintenance of new synapses as crucial substra...

Corrigendum to "Dissociable routes for personal and interpersonal visual enhancement of touch" Cortex 73 (2015) 289-297.

A Map of Anticipatory Activity in Mouse Motor Cortex.

Activity in the mouse anterior lateral motor cortex (ALM) instructs directional movements, often seconds before movement initiation. It is unknown whether this preparatory activity is localized to ALM or widely distributed within motor cortex. Here we imaged activity across motor cortex while mice performed a whisker-based object localization task with a delayed, directional licking response. During tactile sensation and the delay epoch, object location was represented in motor cortex areas that are medial ...

Altered sulcogyral patterns of orbitofrontal cortex in a large cohort of patients with schizophrenia.

Abnormalities in prenatal brain development contribute to schizophrenia vulnerability. Orbitofrontal cortex sulcogyral patterns are largely determined during prenatal development, and four types of orbitofrontal cortex sulcogyral patterns have been classified in humans. Altered orbitofrontal cortex patterns have been reported in individuals with schizophrenia using magnetic resonance imaging; however, sample sizes of previous studies were small-medium effects for detection, and gender manifestation for orbi...

The retrosplenial cortex and object recency memory in the rat.

It has been proposed that the retrosplenial cortex forms part of a "where/when" information network. The present study focussed on the related issue of whether retrosplenial cortex also contributes to "what/when" information, by examining object recency memory. In Experiment 1, rats with retrosplenial lesions were found to be impaired at distinguishing the temporal order of objects presented in a continuous series ('Within-Block' condition). The same lesioned rats could, however, distinguish between objects...

Distinct contributions by frontal and parietal cortices support working memory.

Although subregions of frontal and parietal cortex both contribute and coordinate to support working memory (WM) functions, their distinct contributions remain elusive. Here, we demonstrate that perturbations to topographically organized human frontal and parietal cortex during WM maintenance cause distinct but systematic distortions in WM. The nature of these distortions supports theories positing that parietal cortex mainly codes for retrospective sensory information, while frontal cortex codes for prospe...

Global Representations of Goal-Directed Behavior in Distinct Cell Types of Mouse Neocortex.

The successful planning and execution of adaptive behaviors in mammals may require long-range coordination of neural networks throughout cerebral cortex. The neuronal implementation of signals that could orchestrate cortex-wide activity remains unclear. Here, we develop and apply methods for cortex-wide Ca(2+) imaging in mice performing decision-making behavior and identify a global cortical representation of task engagement encoded in the activity dynamics of both single cells and superficial neuropil dist...

Neurological outcome after resection of parietal lobe including primary somatosensory cortex: implications of additional resection of posterior parietal cortex.

Postoperative neurological outcomes after primary somatosensory cortex (S1) resection have not been well-documented. This study was designed to evaluate the neurological deterioration that follows resection of the S1 areas and to assess the risk factors associated with these morbidities.

Circuit changes in motor cortex during motor skill learning.

Motor cortex is important for motor skill learning, particularly the dexterous skills necessary for our favorite sports and careers. We are especially interested in understanding how plasticity in motor cortex contributes to skill learning. Although human studies have been helpful in understanding the importance of motor cortex in learning skilled tasks, animal models are necessary for achieving a detailed understanding of the circuitry underlying these behaviors and the changes that occur during training. ...

Technology Games: Using Wittgenstein for Understanding and Evaluating Technology.

In the philosophy of technology after the empirical turn, little attention has been paid to language and its relation to technology. In this programmatic and explorative paper, it is proposed to use the later Wittgenstein, not only to pay more attention to language use in philosophy of technology, but also to rethink technology itself-at least technology in its aspect of tool, technology-in-use. This is done by outlining a working account of Wittgenstein's view of language (as articulated mainly in the Inve...

Technology Interventions to Manage Food Intake: Where Are We Now?

This review describes the state-of-the-art for dietary assessment using smartphone apps and digital technology and provides an update on the efficacy of technology-mediated interventions for dietary change.

CorteXpert: A model-based method for automatic renal cortex segmentation.

This paper introduces a model-based approach for a fully automatic delineation of kidney and cortex tissue from contrast-enhanced abdominal CT scans. The proposed framework, named CorteXpert, consists of two new strategies for kidney tissue delineation: cortex model adaptation and non-uniform graph search. CorteXpert was validated on a clinical data set of 58 CT scans using the cross-validation evaluation strategy. The experimental results indicated the state-of-the-art segmentation accuracies (as dice coef...

A Switch and Wave of Neuronal Activity in the Cerebral Cortex During the First Second of Conscious Perception.

Conscious perception occurs within less than 1 s. To study events on this time scale we used direct electrical recordings from the human cerebral cortex during a conscious visual perception task. Faces were presented at individually titrated visual threshold for 9 subjects while measuring broadband 40-115 Hz gamma power in a total of 1621 intracranial electrodes widely distributed in both hemispheres. Surface maps and k-means clustering analysis showed initial activation of visual cortex for both perceived ...

Ability to Resist Temptations of Technology Use: A Qualitative Analysis of Children's Views on Factors Associated with Delay of Gratification.

Excessive technology use among young children remains a public health concern with diverse serious consequences. It is important to find out how children resist the temptation to use technology. Using focus group interviews, the authors explored what factors influence children's ability to delay gratification in using technology. Four specific themes emerged from the interview data: they found (a) fear of punishment, (b) self-directed speech, (c) reinforcement, and (d) parental modeling are effective measur...

Visual Cortex Limits Pop-Out in the Superior Colliculus of Awake Mice.

We detect objects more readily if they differ from their surroundings in motion, color, or texture. This increased saliency is thought to be related to increased responses in the visual cortex. The superior colliculus is another brain area involved in vision and especially in directing gaze and attention. In this study, we show that differences in texture orientation also increase responses in the superficial layers of the superior colliculus that receive retinal and cortical input. We found that gratings e...

Metabolic profile of visual cortex in diabetic rats measured with in vivo proton MRS.

The purpose of the present study was to characterize the metabolic profile of the visual cortex in streptozotocin-induced Type 1 diabetic rats by means of in vivo proton MRS. Several metabolite concentration ratios in the visual cortex were calculated. In addition, postmortem histologic analyses for retinal ganglion cell (RGC) loss, optic nerve injury and visual cortex alterations were monitored. The results showed that diabetes induced several changes in visual cortex metabolites, such as reduced N-acetyla...

Barrel cortex: What is it good for?

The rodent whisker system, with barrel cortex as its most prominent structure, has evolved into a powerful model system to study sensory processing. However, despite the vast amount of data collected on barrel cortex neural activity patterns, as well as its circuitry and plasticity, the precise behavioral and cognitive operations for which this structure is needed are still elusive. Proposed functions of barrel cortex include detection, discrimination, coordination of whisker movements during exploratory lo...


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