TY - JOUR. T1 - Longitudinal reproducibility of automatically segmented hippocampal subfields. T2 - A multisite European 3T study on healthy elderly. AU - Marizzoni, Moira. AU - Antelmi, Luigi. AU - Bosch, Beatriz. AU - Bartrés-Faz, David. AU - Müller, Bernhard W.. AU - Wiltfang, Jens. AU - Fiedler, Ute. AU - Roccatagliata, Luca. AU - Picco, Agnese. AU - Nobili, Flavio. AU - Blin, Olivier. AU - Bombois, Stephanie. AU - Lopes, Renaud. AU - Sein, Julien. AU - Ranjeva, Jean Philippe. AU - Didic, Mira. AU - Gros-Dagnac, Hélène. AU - Payoux, Pierre. AU - Zoccatelli, Giada. AU - Alessandrini, Franco. AU - Beltramello, Alberto. AU - Bargalló, Núria. AU - Ferretti, Antonio. AU - Caulo, Massimo. AU - Aiello, Marco. AU - Cavaliere, Carlo. AU - Soricelli, Andrea. AU - Salvadori, Nicola. AU - Parnetti, Lucilla. AU - Tarducci, Roberto. AU - Floridi, Piero. AU - Tsolaki, Magda. AU - Constantinidis, Manos. AU - Drevelegas, Antonios. AU - Rossini, Paolo Maria. AU - Marra, Camillo. AU - Hoffmann, Karl ...
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The stratum lucidum reduces friction and shear forces between the surrounding layers of the epidermis. About.com explains that the stratum lucidum layer is only present in a few areas of the body...
Video created by デューク大学(Duke University) for the course Medical Neuroscience. It may surprise you to know that in all of our studies of the neural systems for sensation and action, we have yet to properly account for the organization and ...
Sigma-Aldrich offers abstracts and full-text articles by [Yinying Chen, Caixiu Zhou, Yanan Yu, Jun Liu, Zhiwei Jing, Aiping Lv, Fanyun Meng, Zhong Wang, Yongyan Wang].
Ooh Ooh Ooh, They Finally Did It! This post is about a research article I knew existed because I know the authors and I reviewed it. I have just been waiting for it to come out so I could finally celebrate the work. This research finally looked explicitly at temporal processing in humans using a…
Position: PhD Student. Research focus: Understanding the functional diversity of hippocampal CA3 CCK+ interneurons. email: [email protected]. CV. ...
Video created by Duke University for the course Medical Neuroscience. It may surprise you to know that in all of our studies of the neural systems for sensation and action, we have yet to properly account for the organization and function of ...
LUniversité Saint-Esprit de Kaslik (USEK) est une institution catholique privée denseignement supérieur fondée en 1961 par lOrdre Libanais Maronite (OLM).
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در مخازن شکاف‌دار، میزان برداشت نفت به آشام خودبخودی آب در ماتریس و خارج ساختن نفت موجود در آن به سمت شکاف‌ها، بستگی دارد. اما این فرآیند زمانی امکان‌پذیر است که ماتریس بلوک‌ها، «آب‌تر» باشد. از آنجا که مخازن کربناته غالبا «نفت‌تر» می‌باشند، به کارگیری آشام خودبخودی در مخازن کربناته شکاف‌دار مستلزم تغییر ترشوندگی در حین عملیات سیلاب‌زنی می‌باشد. در این مقاله، تأثیر یون‌های مؤثر بر پتانسیل سطح (SO42- ،Ca2+ ،Mg2+) موجود در آب دریا در تغییر ترشوندگی سنگ کربناته و همچنین تأثیر دما و غلظت نمک NaCl در فرآیند آشام خودبخودی مورد تحقیق تجربی قرار گرفت. بدین منظور 13
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2020-4-1 · 10 Parameter Urine Test Strips - 100 Pack. Collect urine mid-stream using a collection container. Dip the strip into the sample for no longer than 2 seconds and remove any excess by wiping the test strip on the side of the container. Read the results after 60 seconds (for testing for Leukocytes, read after 90-120 seconds). What does uro mean on .... Get Price ...
Pattern separation is the process of transforming highly similar sensory inputs into distinct, dissimilar representations. It takes place in the hippocampus and is thought to be used in episodic memory. Impaired pattern separation performance has been recognized as a predictor for the development of cognitive impairments such as dementia in humans and as being present in patients with schizophrenia and post-traumatic stress disorder (PTSD). In this protocol, we describe how to implement a simple and robust object pattern separation (OPS) task in mice and rats that we have previously established and validated. This two-trial memory task uses specific object locations so differences in performance can be calibrated with the extent of object movement. Changes in performance are indicative of spatial pattern separation. In contrast to other pattern separation tasks, the OPS task allows detection of spatial pattern separation performance bidirectionally. Furthermore, the OPS task is cheaper and easier to use
Hippocampal oscillations reflect coordinated neuronal activity on many timescales. Distinct types of GABAergic interneuron participate in the coordination of pyramidal cells over different oscillatory cycle phases. In the CA3 area, which generates sharp waves and gamma oscillations, the contribution of identified GABAergic neurons remains to be defined. We have examined the firing of a family of cholecystokinin-expressing interneurons during network oscillations in urethane-anesthetized rats and compared them with firing of CA3 pyramidal cells. The position of the terminals of individual visualized interneurons was highly diverse, selective, and often spatially coaligned with either the entorhinal or the associational inputs to area CA3. The spike timing in relation to theta and gamma oscillations and sharp waves was correlated with the innervated pyramidal cell domain. Basket and dendritic-layer-innervating interneurons receive entorhinal and associational inputs and preferentially fire on the
Over the last few years there has been increasing interest in behavioral pattern separation. This has primarily focused on spatial pattern separation in rats and mice or pattern separation of visual objects as evaluated in humans. What has been overlooked is a vast literature of temporal pattern separation extending into the early 1990s. The manuscript…
Background Projections from hippocampal CA1-subiculum (CA1/SB) areas to the prefrontal cortex (PFC), which are involved in memory and learning processes, produce long term synaptic plasticity in PFC...
The ICAM-1-positive vessels in the hippocampal CA1 in the control, 2VO, HL and HL + 2VO groups at 1, 2 and 4 months post-surgery. Scale bar: 20 µm.Values are e
Definition of olm in the Definitions.net dictionary. Meaning of olm. What does olm mean? Information and translations of olm in the most comprehensive dictionary definitions resource on the web.
1998 10 22.35003 02 17 47.55 +16 18 22.5 523955 695 Ca3601 1998 10 22.48311 02 17 46.87 +16 18 18.5 523955 695 Ca3601 1998 11 18.07069 02 15 27.92 +16 05 19.9 21.5R 523955 695 Ch1090 1998 11 18.14591 02 15 27.54 +16 05 17.6 523955 695 Ch1090 1998 11 18.23096 02 15 27.03 +16 05 15.2 523955 695 Ch1090 1998 12 14.83617 02 13 35.14 +15 53 37.6 22.7R 523955 950 Ca3601 1998 12 14.85345 02 13 35.07 +15 53 37.3 523955 950 Ca3601 1999 11 10.16227 02 22 34.50 +16 25 15.5 22.5R 523955 695 Ca7321 1999 11 10.18814 02 22 34.40 +16 25 14.7 523955 695 Ca7321 1999 11 10.24322 02 22 34.07 +16 25 12.9 523955 695 Ca7321 1999 11 10.31381 02 22 33.61 +16 25 10.7 523955 696 Ca7321 1999 11 10.37010 02 22 33.30 +16 25 09.0 22.7R 523955 696 Ca7321 1999 11 10.41551 02 22 33.04 +16 25 07.8 523955 696 Ca7321 1999 11 11.24109 02 22 28.74 +16 24 43.8 523955 696 Ca7321 1999 11 11.28637 02 22 28.51 +16 24 42.8 523955 696 Ca7321 1999 11 11.33656 02 22 28.17 +16 24 41.3 523955 696 Ca7321 2000 11 23.18416 02 27 52.14 +16 34 03.5 ...
1998 10 22.40628 03 08 48.43 +16 39 15.3 22.8R 91205 695 Ca3120 1998 10 22.49369 03 08 47.93 +16 39 12.7 91205 695 Ca3120 1998 11 18.13535 03 06 18.37 +16 27 28.1 22.6R 91205 695 Ca3120 1998 11 18.20454 03 06 18.00 +16 27 26.2 91205 695 Ca3120 1998 12 17.95527 03 03 45.48 +16 15 35.9 91205 950 Ca3601 1998 12 18.00257 03 03 45.30 +16 15 35.6 91205 950 Ca3601 1998 12 18.03799 03 03 45.12 +16 15 34.0 91205 950 Ca3601 1999 10 06.55934 03 17 46.28 +16 54 48.2 91205 568 Ca6740 1999 10 09.53349 03 17 33.50 +16 53 45.2 91205 568 Ca6740 1999 10 09.57011 03 17 33.32 +16 53 44.2 91205 568 Ca6740 1999 10 09.60427 03 17 33.15 +16 53 43.6 23.4R 91205 568 Ca6740 1999 10 09.63619 03 17 33.05 +16 53 42.9 23.3R 91205 568 Ca6740 2000 12 28.31163 03 18 17.672 +16 31 40.74 23.2R 91205 568 Cl4052 2000 12 28.38018 03 18 17.407 +16 31 39.64 23.0R 91205 568 Cl4052 2003 10 01.56099 03 48 19.49 +17 21 57.5 23.1R 91205 568 Ci6851 2003 10 01.59893 03 48 19.38 +17 21 56.8 91205 568 Ci6851 2003 12 21.158989 03 41 29.38 +16 54 ...
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Investitiile publice prezinta doua coordonate principale, care le determina caracterul de netagaduit public: sunt facute in folosul comunitatii si sunt facute din banii publici.
The CA2 region of the mammalian hippocampus is a unique region with its own distinctive properties, inputs and pathologies. Disruption of inhibitory circuits in this region appears to be linked with the pathology of specific psychiatric disorders, promoting interest in its local circuitry, its role in hippocampal function and its dysfunction in disease. In previous studies, CA2 interneurons, including a novel subclass of CA2 dendrite-preferring interneurons that has not been identified in other CA regions, have been shown to display physiological, synaptic and morphological properties unique to this sub-field and may therefore play a crucial role in the hippocampal circuitry. The distributions of immuno-labeled interneurons in dorsal CA2 were studied and compared with those of interneurons in CA1 and CA3. Like those in CA1 and CA3, the somata of CA2 parvalbumin-immunoperoxidase-labeled interneurons were located primarily in Stratum Pyramidale (SP) and Stratum Oriens (SO), with very few cells in Stratum
A popular current view is that place fields are shaped by very specific prior experiences of animals. That is, memory (or memory retrieval) plays an important role in determining the way place fields ... More. A popular current view is that place fields are shaped by very specific prior experiences of animals. That is, memory (or memory retrieval) plays an important role in determining the way place fields respond to current sensory and behavioral information. This chapter considers a role for the hippocampus in memory in terms of the processes it contributes to a broader neural system. This perspective assumes that the hippocampus potentially contributes to multiple forms of learning and memory. The extent to which memory relies on hippocampal processing per se depends on the extent to which context discrimination (i.e., context-based pattern completion and pattern separation) is required to perform the task. This view contrasts with the traditional view of assigning specific types of memories ...
This paper reviews on results from a million-cell granule cell model of the rat dentate gyrus that was used to explore the efforts of local interneuronal and associational circuits to network-level activity. activity. Outcomes furthermore present that the topography of regional interneuronal circuits can possess simply as solid an influence on the advancement of spatio-temporal groupings in the granule cell inhabitants as the perforant route topography will, both sharpening existing groupings and presenting brand-new types with a better spatial level. Finally, outcomes present that the connections between the inhibitory and associational loops can trigger high regularity oscillations that are modulated by a low-frequency oscillatory sign. These outcomes serve to additional illustrate the importance of topographical restrictions on a global sign digesting feature of a sensory network, while also showing how wealthy spatio-temporal and oscillatory aspect can evolve from a fairly little amount ...
Some insight into the nature and inefficiency of linear polarization can be appreciated by considering the diagram below. Here you can see that a field like B1 (depicted as a big green arrow) oscillating at the resonance frequency (ωo) can be decomposed into two counterrotating subfields (red and blue arrows), each half as large. One of these subfields (red arrow) rotates in the same direction and frequency (ωo) as the spins undergoing NMR; the other subfield (blue arrow) rotates in the opposite direction and frequency (−ωo). Only the subfield associated with red arrow is effective at inducing net nuclear transitions and a change in net nuclear magnetization required for MRI. The other subfield is ineffective for NMR and serves only to deposit unwanted thermal energy into tissue. ...
Declaring the library to be a public forum, defined as an available public space where citizens communicate their ideas through the spoken word, Judge Sarokin declared it covered by the First Amendment. Moreover, a hygiene test has a disparate impact on the poor. In short, the library rules unreasonably frustrate, infringe, or obstruct the expressional and associational rights of individuals. In a classic expression of the vision of the anointed, Judge Sarokin lectured the community on its attitude toward the homeless: If we wish to shield our eyes and noses from the homeless, we should revoke their conditions, not their library cards. ...
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الگوریتم دیکدینگ کروی با پیچیدگی کم برای دیکدینگ کد های فرکانس فضا در سیستم MIMO-OFDM سیستمهای مخابراتی بی سیم چند فرستنده چند گیرنده با مدولاسیون OFDM ، ) (MIMO 1 -OFDM 2 ، با بهره گیری از دایورسیتی و بهره حاصل از کدهای فرکانس - فضا امکان ارسال در نرخ بیتهای بسیار بالا را فراهم می آورند . در این مقاله برای یک سیستم MIMO-OFDM روش.... ...
1,0 1,1 Pawoł Völkel: Prawopisny słownik hornjoserbskeje rěče. Hornjoserbsko-němski słownik. Ludowe nakładnistwo Domowina, Budyšin 2005, ISBN 3-7420-1920-1, str. 407. ...
《眼科学报》创刊于1985年,是由中华人民共和国教育部主管、中山大学主办、中山大学中山眼科中心承办的一本国家级医学期刊(季刊,刊号:ISSN:1000-4432; CN:44-1119/R)。由中山大学中山眼科中心前院长葛坚,中山大学中山眼科中心主任、院长刘奕志担任主编。 主要报道国内外眼科领域新进展,新动态,着重报道眼科学基础研究,临床经验,以及流行病等相关的理论知识与技术操作。 目前已被Chemical Abstract(CA)、中国期刊全文数据库(知网)、中国核心期刊(遴选)数据库(万方)、中文科技期刊数据库(维普)等国内外重要数据库收录。
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MONTREAL †Assistant coach Clement Jodoin is leaving the Montreal Canadiens.. Jodoin, who has been an assistant coach for 10 years in two stints with Montreal, decided on his own to resign, head coach Claude Julien said in a statement.. At our post-season meeting, we offered Clement to remain on our coaching staff, but he indicated to us that at this stage in his career, he would be looking for a change and would like to explore other challenges, Julien said.. Jodoin, 65, served as an assistant coach in Montreal from 1997 to 2003 under Alain Vigneault and Michel Therrien.. He returned when Therrien began his second stint as head coach in 2012 after serving as head coach for one season of the Hamilton Bulldogs, then the Canadiens top farm club.. Julien replaced the fired Therrien on Feb. 14. He was expected to bring in some of his own assistants, as most head coaches do.. Jodoin was an assistant coach with the Pittsburgh Penguins in 1987-88 and for two seasons with the Quebec Nordiques in ...
The hippocampus proper refers to the actual structure of the hippocampus which is made up of four regions or subfields. The subfields CA1, CA2, CA3, and CA4 use the initials of Cornu Ammonis , an earlier name of the hippocampus. Structure There are four regions in the hippocampus proper which form a neural circuit. CA1 is the first region in the hippocampal circuit, from which a major output pathway goes to layer V of the entorhinal cortex . Another significant output is to the subiculum . CA2 is a small region located between CA1 and CA3. It receives some input from layer II of the entorhinal cortex via the perforant path . Its pyramidal cells are more like those in CA3 than those in CA1. It is often ignored due to its small size. CA3 receives input from the mossy fibers of the granule cells in the dentate gyrus , and also from cells in the entorhinal cortex via the perforant path. The mossy fiber pathway ends in the stratum lucidum . The perforant path passes through the stratum lacunosum and ends in
Different events usually contain similar elements that can contribute to interference during memory encoding and retrieval. The hippocampus (HPC), a structure that is critically involved in some forms of memory, has been hypothesized to reduce interference between memories with overlapping content, thus facilitating correct recall. Pattern separation is one hypothetical process whereby input ambiguity is reduced. Here we test the hypothesis that the HPC and/or dentate gyrus (DG) are important for pattern separation by measuring performance by rats with damage in tasks that require discrimination between visual stimuli that share systematically varying numbers of common elements. Rats with HPC damage were slower to resolve discriminations with minimal degrees of overlap. Lesions of the DG did not affect the ability of rats to deal with overlap, suggesting a dissociation between the HPC and DG. Our results provide partial support for the idea that the HPC contributes to the pattern separation ...
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Difference between revisions of Parvalbumin-expressing interneurons coordinate hippocampal network dynamics required for memory consolidation ...
A frame member for housing a battery cell, frame assembly and frame/battery cell assembly made therefrom, as well as respective methods of making the same, are disclosed. A frame member for housing a battery cell includes an integral frame having a peripheral wall, the peripheral wall having an attachment face and an opposed cooling face, and an attachment feature located on the attachment face and a complementary attachment feature located on the attachment face that is symmetrically opposed to the attachment feature about a plane of symmetry of the frame, the peripheral wall defining an opening that is configured to matingly receive a battery cell therein. A pair of frame members having a cooling member placed therebetween and attached to the respective attachment faces comprises a frame assembly. A frame/battery cell assembly includes a pair of frame assemblies having at least one battery cell placed therebetween.
New neurons are continuously added throughout life to the dentate gyrus of the mammalian hippocampus. During embryonic and early postnatal development, the dentate gyrus is formed in an outside-in layering pattern that may extend through adulthood. In this work, we sought to quantify systematically …
Optogenetics holds great promise for both the dissection of neural circuits and the evaluation of theories centered on the temporal organizing properties of oscillations that underpin cognition. We measured the effects of nonselective optogenetic stimulation on the oscillations of the MS and corresponding effects on hippocampal subfields CA1 and CA3 in three different contexts: (1) With minimal movement while the rats sit in a confined chamber; (2) Exploring a novel open field; and (3) Learning and performing a T‐maze behavioral task. We describe the relationship between animal speed and the efficacy of septal stimulation in the entrainment of hippocampal oscillations as well as possible cognitive enhancements in relation to MS stimulation. ...
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Roylan Foam Crt Opn Cell 11x24 Med Ca - Model CA4882 : This product is a non stock item that must be ordered from the manufacturer. As such, will app
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