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Remote Memory

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https://www.readbyqxmd.com/read/28888982/disrupting-nnos-psd-95-coupling-in-the-hippocampal-dentate-gyrus-promotes-extinction-memory-retrieval
#1
Jun Li, Zhou Han, Bo Cao, Cheng-Yun Cai, Yu-Hui Lin, Fei Li, Hai-Ying Wu, Lei Chang, Chun-Xia Luo, Dong-Ya Zhu
Granule cells in the dentate gyrus regenerate constantly in adult hippocampus and then integrate into neural circuits in the hippocampus thereby providing the neural basis for learning and memory. Promoting the neurogenesis in the hippocampus facilitates learning and memory such as spatial learning, object identification, and extinction learning. The interaction between neuronal nitric oxide synthase (nNOS) and postsynaptic density protein-95 (PSD-95) is reported to negatively regulate neurogenesis in brain, so we hypothesized that disrupting this interaction might facilitate the neurogenesis in the dentate gyrus (DG) and thus enhance the extinction memory retrieval of fear learning...
September 6, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28882599/a-network-level-approach-of-cognitive-flexibility-impairment-after-surgery-of-a-right-temporo-parietal-glioma
#2
E Mandonnet, L Cerliani, K Siuda-Krzywicka, I Poisson, N Zhi, E Volle, M T de Schotten
OBJECTIVE: The right "non-dominant" temporo-parietal junction is usually not considered as a highly eloquent area. This contrasts with its mirrored left "dominant" counterpart, which is known as highly eloquent regarding language function. The question arises about which functions should be monitored when operating lesions of the right temporo-parietal junction under awake conditions. METHODS: We report the case of a patient who underwent a surgical resection of a glioma located in the right temporo-parietal junction...
September 4, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28870702/automatic-frequency-shift-detection-in-the-auditory-system-a-review-of-psychophysical-findings
#3
Laurent Demany, Catherine Semal
The human brain has the task of binding successive sounds produced by the same acoustic source into a coherent perceptual stream, and binding must be selective when several sources are concurrently active. Binding appears to obey a principle of spectral proximity: pure tones close in frequency are more likely to be bound than pure tones with remote frequencies. It has been hypothesized that the binding process is realized by automatic "frequency-shift detectors" (FSDs), comparable to the detectors of spatial motion in the visual system...
September 1, 2017: Neuroscience
https://www.readbyqxmd.com/read/28868118/effects-of-left-prefrontal-transcranial-direct-current-stimulation-on-the-acquisition-of-contextual-and-cued-fear-memory
#4
Shahsanam Abbasi, Mohammad Nasehi, Hamid Reza Soleimanpour Lichaei, Mohammad-Reza Zarrindast
OBJECTIVES: Behavioral and neuroimaging studies have shown that transcranial direct current stimulation, as a non-invasive neuromodulatory technique, beyond regional effects can modify functionally interconnected remote cortical and subcortical areas. In this study, we hypothesized that the induced changes in cortical excitability following the application of cathodal or anodal tDCS over the left frontal cortex as pre-training would affect functional connectivity in resting-state circuits of fear memory and consequently could improve or disturb the acquisition of fear memory...
June 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28838789/long-term-memory-deficits-in-temporal-lobe-epilepsy
#5
REVIEW
E Tramoni-Negre, I Lambert, F Bartolomei, O Felician
Memory complaints and deficits are common in patients with epilepsy, especially temporal lobe epilepsy (TLE), where memory-related brain structures are directly involved in the epileptic process. In recent years, substantial progress has been made in delineating memory impairment in TLE, challenging the traditional neuropsychological approach of the disorder. In particular, several lines of evidence have suggested that, beyond the apparent deficit demonstrable by standardized neuropsychological evaluations, TLE may also negatively interact with long-term memory, producing considerable loss of information of the patient's autobiographical history and an inability to maintain newly acquired information over a period of time...
August 21, 2017: Revue Neurologique
https://www.readbyqxmd.com/read/28837112/comparative-evaluation-of-background-subtraction-algorithms-in-remote-scene-videos-captured-by-mwir-sensors
#6
Guangle Yao, Tao Lei, Jiandan Zhong, Ping Jiang, Wenwu Jia
Background subtraction (BS) is one of the most commonly encountered tasks in video analysis and tracking systems. It distinguishes the foreground (moving objects) from the video sequences captured by static imaging sensors. Background subtraction in remote scene infrared (IR) video is important and common to lots of fields. This paper provides a Remote Scene IR Dataset captured by our designed medium-wave infrared (MWIR) sensor. Each video sequence in this dataset is identified with specific BS challenges and the pixel-wise ground truth of foreground (FG) for each frame is also provided...
August 24, 2017: Sensors
https://www.readbyqxmd.com/read/28809837/protocol-for-assessing-the-relative-effects-of-environment-and-genetics-on-antler-and-body-growth-for-a-long-lived-cervid
#7
Eric S Michel, Emily B Flinn, Stephen Demarais, Bronson K Strickland, Guiming Wang, Chad M Dacus
Cervid phenotype can be placed into one of two categories: efficiency, which promotes survival over extravagant morphometric growth, and luxury, which promotes growth of large weaponry and body size. Populations of the same species display each phenotype depending on environmental conditions. Although antler and body size of male white-tailed deer (Odocoileus virginianus) varies by physiographic region in Mississippi, USA and is strongly correlated with regional variation in nutritional quality, the effects of population-level genetics from native stocks and previous re-stocking efforts cannot be disregarded...
August 8, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28802103/where-you-are-affects-what-you-can-easily-imagine-environmental-geometry-elicits-sensorimotor-interference-in-remote-perspective-taking
#8
Bernhard E Riecke, Timothy P McNamara
Imagined perspective switches are notoriously difficult, a fact often ascribed to sensorimotor interference between one's to-be-imagined versus actual orientation. Here, we demonstrate similar interference effects, even if participants know they are in a remote environment with unknown spatial relation to the learning environment. Participants learned 15 target objects irregularly arranged in an office from one orientation (0°, 120°, or 240°). Participants were blindfolded and disoriented before being wheeled to a test room of similar geometry (exp...
August 9, 2017: Cognition
https://www.readbyqxmd.com/read/28796600/interoperable-end-to-end-remote-patient-monitoring-platform-based-on-ieee-11073-phd-and-zigbee-health-care-profile
#9
Malcolm Clarke, Joost de Folter, Vivek Verma, Hulya Gokalp
This paper describes the implementation of an end-to-end remote monitoring platform based on the IEEE 11073 standards for Personal Health Devices (PHD). It provides an overview of the concepts and approaches and describes how the standard has been optimized for small devices with limited resources of processor, memory and power and that use short range wireless technology. It explains aspects of IEEE 11073, including the Domain Information Model, state model and nomenclature, and how these support its plug-and-play architecture...
August 7, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28790901/reversible-inactivation-of-the-higher-order-auditory-cortex-during-fear-memory-consolidation-prevents-memory-related-activity-in-the-basolateral-amygdala-during-remote-memory-retrieval
#10
Marco Cambiaghi, Annamaria Renna, Luisella Milano, Benedetto Sacchetti
Recent findings have shown that the auditory cortex, and specifically the higher order Te2 area, is necessary for the consolidation of long-term fearful memories and that it interacts with the amygdala during the retrieval of long-term fearful memories. Here, we tested whether the reversible blockade of Te2 during memory consolidation may affect the activity changes occurring in the amygdala during the retrieval of fearful memories. To address this issue, we blocked Te2 in a reversible manner during memory consolidation processes...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28790188/noradrenergic-activation-of-the-basolateral-amygdala-maintains-hippocampus-dependent-accuracy-of-remote-memory
#11
Erika Atucha, Vanja Vukojevic, Raquel V Fornari, Giacomo Ronzoni, Philippe Demougin, Fabian Peter, Piray Atsak, Marcel W Coolen, Andreas Papassotiropoulos, James L McGaugh, Dominique J-F de Quervain, Benno Roozendaal
Emotional enhancement of memory by noradrenergic mechanisms is well-described, but the long-term consequences of such enhancement are poorly understood. Over time, memory traces are thought to undergo a neural reorganization, that is, a systems consolidation, during which they are, at least partly, transferred from the hippocampus to neocortical networks. This transfer is accompanied by a decrease in episodic detailedness. Here we investigated whether norepinephrine (NE) administration into the basolateral amygdala after training on an inhibitory avoidance discrimination task, comprising two distinct training contexts, alters systems consolidation dynamics to maintain episodic-like accuracy and hippocampus dependency of remote memory...
August 22, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28756212/an-analysis-of-dentate-gyrus-function-an-update
#12
REVIEW
Raymond P Kesner
In this review there will be a description of the dentate gyrus (DG) neural circuitry that mediates the operation of a variety of mnemonic processes associated with dorsal and ventral DG function in rats. Dysfunction of the dorsal DG can be shown to mediate mnemonic processing of spatially based information including a) the operation of conjunctive encoding of multiple sensory inputs to determine spatial representations, b) pattern separation based on reducing interference between similar spatial locations and spatial contexts for horizontal distance between objects, vertical distance for height of objects, slope or angle of motor movements, c) importance of spatial context in object recognition and processing of shades of grey associated with the walls of the box d) temporal integration in the creation of remote memory based in part on DG neurogenesis and function of the CA3 subregion of the hippocampus...
July 26, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28718347/priming-involuntary-autobiographical-memories-in-the-lab
#13
Krystian Barzykowski, Agnieszka Niedźwieńska
Involuntary autobiographical memories (IAMs) are recollections of personal past that frequently and spontaneously occur in daily life. Initial studies by Mace ( 2005 ) showed that deliberately reminiscing about a certain lifetime period (e.g., high school) significantly increased the number of different IAMs from the same period in subsequent days, suggesting that priming may play a significant role in the retrieval of IAMs in everyday life. In the present study, we used a modified experimental paradigm, originally used by Schlagman and Kvavilashvili ( 2008 ), to study IAMs under well-controlled laboratory conditions...
July 18, 2017: Memory
https://www.readbyqxmd.com/read/28715454/reduction-of-cav1-3-channels-in-dorsal-hippocampus-impairs-the-development-of-dentate-gyrus-newborn-neurons-and-hippocampal-dependent-memory-tasks
#14
Su-Hyun Kim, Ye-Ryoung Park, Boyoung Lee, Byungil Choi, Hyun Kim, Chong-Hyun Kim
Cav1.3 has been suggested to mediate hippocampal neurogenesis of adult mice and contribute to hippocampal-dependent learning and memory processes. However, the mechanism of Cav1.3 contribution in these processes is unclear. Here, roles of Cav1.3 of mouse dorsal hippocampus during newborn cell development were examined. We find that knock-out (KO) of Cav1.3 resulted in the reduction of survival of newborn neurons at 28 days old after mitosis. The retroviral eGFP expression showed that both dendritic complexity and the number and length of mossy fiber bouton (MFB) filopodia of newborn neurons at ≥ 14 days old were significantly reduced in KO mice...
2017: PloS One
https://www.readbyqxmd.com/read/28710525/differential-role-of-the-anterior-and-intralaminar-lateral-thalamic-nuclei-in-systems-consolidation-and-reconsolidation
#15
Joëlle Lopez, Karine Gamache, Carmelo Milo, Karim Nader
The anterior thalamic nuclei (ATN) and the intralaminar/lateral thalamic nuclei (ILN/LT) play different roles in memory processes. The ATN are believed to be part of an extended hippocampal system, and the ILN/LT have strong connections with the medial prefrontal cortex. It was shown that the ILN/LT are involved in systems consolidation. However, whether they are necessary for memory retrieval as well remains unclear. We, therefore, used c-Fos immunohistochemistry and reversible inactivations to investigate the role of the ATN and ILN/LT in recent and remote contextual fear memory retrieval in rats...
July 14, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28708963/a-qualitative-study-adopting-a-user-centered-approach-to-design-and-validate-a-brain-computer-interface-for-cognitive-rehabilitation-for-people-with-brain-injury
#16
Suzanne Martin, Elaine Armstrong, Eileen Thomson, Eloisa Vargiu, Marc Solà, Stefan Dauwalder, Felip Miralles, Jean Daly Lynn
Cognitive rehabilitation is established as a core intervention within rehabilitation programs following a traumatic brain injury (TBI). Digitally enabled assistive technologies offer opportunities for clinicians to increase remote access to rehabilitation supporting transition into home. Brain Computer Interface (BCI) systems can harness the residual abilities of individuals with limited function to gain control over computers through their brain waves. This paper presents an online cognitive rehabilitation application developed with therapists, to work remotely with people who have TBI, who will use BCI at home to engage in the therapy...
July 14, 2017: Assistive Technology: the Official Journal of RESNA
https://www.readbyqxmd.com/read/28708877/median-raphe-region-stimulation-alone-generates-remote-but-not-recent-fear-memory-traces
#17
Diána G Balázsfi, Dóra Zelena, Lívia Farkas, Kornél Demeter, István Barna, Csaba Cserép, Virág T Takács, Gábor Nyíri, Flóra Gölöncsér, Beáta Sperlágh, Tamás F Freund, József Haller
The median raphe region (MRR) is believed to control the fear circuitry indirectly, by influencing the encoding and retrieval of fear memories by amygdala, hippocampus and prefrontal cortex. Here we show that in addition to this established role, MRR stimulation may alone elicit the emergence of remote but not recent fear memories. We substituted electric shocks with optic stimulation of MRR in C57BL/6N male mice in an optogenetic conditioning paradigm and found that stimulations produced agitation, but not fear, during the conditioning trial...
2017: PloS One
https://www.readbyqxmd.com/read/28699083/a-therapy-system-for-post-traumatic-stress-disorder-using-a-virtual-agent-and-virtual-storytelling-to-reconstruct-traumatic-memories
#18
Myrthe L Tielman, Mark A Neerincx, Rafael Bidarra, Ben Kybartas, Willem-Paul Brinkman
Although post-traumatic stress disorder (PTSD) is well treatable, many people do not get the desired treatment due to barriers to care (such as stigma and cost). This paper presents a system that bridges this gap by enabling patients to follow therapy at home. A therapist is only involved remotely, to monitor progress and serve as a safety net. With this system, patients can recollect their memories in a digital diary and recreate them in a 3D WorldBuilder. Throughout the therapy, a virtual agent is present to inform and guide patients through the sessions, employing an ontology-based question module for recollecting traumatic memories to further elicit a detailed memory recollection...
August 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28696766/multispecies-trapped-ion-node-for-quantum-networking
#19
I V Inlek, C Crocker, M Lichtman, K Sosnova, C Monroe
Trapped atomic ions are a leading platform for quantum information networks, with long-lived identical qubit memories that can be locally entangled through their Coulomb interaction and remotely entangled through photonic channels. However, performing both local and remote operations in a single node of a quantum network requires extreme isolation between spectator qubit memories and qubits associated with the photonic interface. We achieve this isolation by cotrapping ^{171}Yb^{+} and ^{138}Ba^{+} qubits. We further demonstrate the ingredients of a scalable ion trap network node with two distinct experiments that consist of entangling the mixed species qubit pair through their collective motion and entangling a ^{138}Ba^{+} qubit with an emitted visible photon...
June 23, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28686584/assessing-recent-and-remote-associative-olfactory-memory-in-rats-using-the-social-transmission-of-food-preference-paradigm
#20
Benjamin Bessières, Olivier Nicole, Bruno Bontempi
Rats have the ability to learn about potential food sources by sampling their odors on the breath of conspecifics. Although this ethologically based social behavior has been transposed to the laboratory to probe nonspatial associative olfactory memory, only a few studies have taken full advantage of its unique features to examine the organization of recently and remotely acquired information. We provide a set of standardized procedures and technical refinements that are particularly useful in achieving this goal while minimizing confounding factors...
July 2017: Nature Protocols
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