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https://www.readbyqxmd.com/read/29775673/gender-dependent-contribution-of-muscarinic-receptors-in-memory-retrieval-under-sub-chronic-stress
#1
Habiba Rashid, Touqeer Ahmed
Stress induces retrograde amnesia in humans and rodents. Muscarinic antagonism under normal physiological conditions causes gender dependent impairment in episodic memory retrieval. We aimed to explore the gender dependent role of muscarinic receptors in memory retrieval under sub-chronic stress condition. Male and female mice were trained for Morris water maze test and contextual fear conditioning, followed by 3 hour restraint stress per day for five days. Stress was either given alone or in combination with a daily subcutaneous injection of scopolamine (1 mg/kg) or donepezil (1 mg/kg)...
May 15, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29774475/neuropsychological-profiles-of-breast-cancer-and-brain-tumor-cohorts-in-northeast-ontario-canada
#2
Matias Mariani, Mark William Glister Collins
PURPOSE: As developments in cancer treatment have improved outcomes, research has increasingly focused on the role of cancer-related cognitive impairment (CRCI) in quality of life for cancer survivors. Impairment profiles have been heterogeneous across studies, necessitating the study of these effects across different cohorts. The purpose of this preliminary study is to compare the memory profiles of Northeast Ontario breast and CNS cancer patients, as there is no literature which exists for profiling CRCI within this largely rural region...
May 17, 2018: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/29773221/are-there-distinct-forms-of-accelerated-forgetting-and-if-so-why
#3
Andrew R Mayes, Nicola M Hunkin, Claire Isaac, Nils Muhlert
Whether accelerated long-term forgetting (ALF) and classic organic amnesia, particularly hippocampal-amnesia, differ qualitatively or merely quantitatively is disputed. Qualitative difference accounts postulate that ALF patients show normal recall memory for at least minutes, during which hippocampal-amnesics already show accelerated forgetting and impaired recall but, thereafter, ALF patients show accelerated forgetting and impaired delayed recall. These delayed impairments may be more severe than those shown by hippocampal-amnesics...
April 19, 2018: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29772960/is-music-a-memory-booster-in-normal-aging-the-influence-of-emotion
#4
Stéphie Ratovohery, Alexia Baudouin, Aude Gachet, Juliette Palisson, Pauline Narme
Age-related differences in episodic memory have been explained by a decrement in strategic encoding implementation. It has been shown in clinical populations that music can be used during the encoding stage as a mnemonic strategy to learn verbal information. The effectiveness of this strategy remains equivocal in older adults (OA). Furthermore, the impact of the emotional valence of the music used has never been investigated in this context. Thirty OA and 24 young adults (YA) learned texts that were either set to music that was positively or negatively valenced, or spoken only...
May 17, 2018: Memory
https://www.readbyqxmd.com/read/29772951/the-lack-of-effect-of-dynamic-visual-noise-on-the-concreteness-effect-in-short-term-memory
#5
Judit Castellà, Guillermo Campoy
It has been suggested that the concreteness effect in short-term memory (STM) is a consequence of concrete words having more distinctive and richer semantic representations. The generation and storage of visual codes in STM could also play a crucial role on the effect because concrete words are more imaginable than abstract words. If this were the case, the introduction of a visual interference task would be expected to disrupt recall of concrete words. A Dynamic Visual Noise (DVN) display, which has been proven to eliminate the concreteness effect on long-term memory (LTM), was presented along encoding of concrete and abstract words in a STM serial recall task...
May 17, 2018: Memory
https://www.readbyqxmd.com/read/29772255/the-gist-and-details-of-sex-differences-in-cognition-and-the-brain-how-parallels-in-sex-differences-across-domains-are-shaped-by-the-locus-coeruleus-and-catecholamine-systems
#6
REVIEW
Alexandra Ycaza Herrera, Jiaxi Wang, Mara Mather
Across three different domains, there are similar sex differences in how men and women process information. There tends to be a male advantage in attending to and remembering the gist (essential central information of a scene or situation), but a female advantage in attending to and remembering the details (non-essential peripheral information of a scene or situation). This is seen in emotional memory, where emotion enhances gist memory more for males than for females, but enhances detail memory more for females than for males...
May 14, 2018: Progress in Neurobiology
https://www.readbyqxmd.com/read/29770135/mucosal-immunity-and-protective-efficacy-of-intranasal-inactivated-influenza-vaccine-is-improved-by-chitosan-nanoparticle-delivery-in-pigs
#7
Santosh Dhakal, Sankar Renu, Shristi Ghimire, Yashavanth Shaan Lakshmanappa, Bradley T Hogshead, Ninoshkaly Feliciano-Ruiz, Fangjia Lu, Harm HogenEsch, Steven Krakowka, Chang Won Lee, Gourapura J Renukaradhya
Annually, swine influenza A virus (SwIAV) causes severe economic loss to swine industry. Currently used inactivated SwIAV vaccines administered by intramuscular injection provide homologous protection, but limited heterologous protection against constantly evolving field viruses, attributable to the induction of inadequate levels of mucosal IgA and cellular immune responses in the respiratory tract. A novel vaccine delivery platform using mucoadhesive chitosan nanoparticles (CNPs) administered through intranasal (IN) route has the potential to elicit strong mucosal and systemic immune responses in pigs...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29768952/meta-analysis-of-the-association-between-rumination-and-reduced-autobiographical-memory-specificity
#8
Connie P Y Chiu, James W Griffith, Bert Lenaert, Filip Raes, Dirk Hermans, Tom J Barry
The CaRFAX model, proposed by Williams J. M. G. (2006. Capture and rumination, functional avoidance, and executive control (CaRFAX): Three processes that underlie overgeneral memory. Cognition and Emotion, 20, 548-568. doi: 10.1080/02699930500450465 ; Williams, J. M. G., Barnhofer, T., Crane, C., Herman, D., Raes, F., Watkins, E., & Dalgleish, T. (2007). Autobiographical memory specificity and emotional disorder. Psychological Bulletin, 133(1), 122-148. doi: 10.1037/0033-2909.133.1.122 ) posits that reduced autobiographical memory specificity, a key factor associated with the emergence and maintenance of emotional disorders, may result from heightened rumination...
May 16, 2018: Memory
https://www.readbyqxmd.com/read/29768086/visual-associations-to-retrieve-episodic-memory-across-healthy-elderly-mild-cognitive-impairment-and-patients-with-alzheimer-s-disease
#9
Sascha R A Meyer, Jos F M De Jonghe, Ben Schmand, Rudolf W H M Ponds
Episodic memory tests need to determine the degree to which patients with moderate to severe memory deficits can still benefit from retrieval support. Especially in the case of Alzheimer's disease (AD), this may support health care to be more closely aligned with patients' memory capacities. We investigated whether the different measures of episodic memory of the Visual Association Test-Extended (VAT-E) can provide a more detailed and informative assessment on memory disturbances across a broad range of cognitive decline, from normal to severe impairment as seen in AD, by examining differences in floor effects...
May 16, 2018: Neuropsychology, Development, and Cognition. Section B, Aging, Neuropsychology and Cognition
https://www.readbyqxmd.com/read/29766579/memory-complaints-in-amnestic-mild-cognitive-impairment-more-prospective-or-retrospective
#10
REVIEW
Alexandre de Mendonça, Helena Felgueiras, Ana Verdelho, Sara Câmara, Cláudia Grilo, João Maroco, Antonina Pereira, Manuela Guerreiro
OBJECTIVE: Patients with amnestic Mild Cognitive Impairment (aMCI), usually considered an early stage of Alzheimer's disease, have deficits not only in retrospective memory (RM), that is, recalling of past events, words or people, but also on prospective memory (PM), the cognitive ability of remembering to execute delayed intentions in the future. This study investigated whether patients with aMCI refer more PM complaints as compared with RM complaints, and whether this might depend upon short-term vs long-term items or time-based vs event-based tasks...
May 15, 2018: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/29765102/the-effects-of-cannabidiol-on-impulsivity-and-memory-during-abstinence-in-cigarette-dependent-smokers
#11
C Hindocha, T P Freeman, M Grabski, H Crudgington, A C Davies, J B Stroud, R K Das, W Lawn, C J A Morgan, H V Curran
Acute nicotine abstinence in cigarette smokers results in deficits in performance on specific cognitive processes, including working memory and impulsivity which are important in relapse. Cannabidiol (CBD), the non-intoxicating cannabinoid found in cannabis, has shown pro-cognitive effects and preliminary evidence has indicated it can reduce the number of cigarettes smoked in dependent smokers. However, the effects of CBD on cognition have never been tested during acute nicotine withdrawal. The present study therefore aimed to investigate if CBD can improve memory and reduce impulsivity during acute tobacco abstinence...
May 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29764971/retrieval-and-sleep-both-counteract-the-forgetting-of-spatial-information
#12
James W Antony, Ken A Paller
Repeatedly studying information is a good way to strengthen memory storage. Nevertheless, testing recall often produces superior long-term retention. Demonstrations of this testing effect, typically with verbal stimuli, have shown that repeated retrieval through testing reduces forgetting. Sleep also benefits memory storage, perhaps through repeated retrieval as well. That is, memories may generally be subject to forgetting that can be counteracted when memories become reactivated, and there are several types of reactivation: (i) via intentional restudying, (ii) via testing, (iii) without provocation during wake, or (iv) during sleep...
June 2018: Learning & Memory
https://www.readbyqxmd.com/read/29764970/reinforcement-signaling-of-punishment-versus-relief-in-fruit-flies
#13
Christian König, Afshin Khalili, Mathangi Ganesan, Amrita P Nishu, Alejandra P Garza, Thomas Niewalda, Bertram Gerber, Yoshinori Aso, Ayse Yarali
Painful events establish opponent memories: cues that precede pain are remembered negatively, whereas cues that follow pain, thus coinciding with relief are recalled positively. How do individual reinforcement-signaling neurons contribute to this "timing-dependent valence-reversal?" We addressed this question using an optogenetic approach in the fruit fly. Two types of fly dopaminergic neuron, each comprising just one paired cell, indeed established learned avoidance of odors that preceded their photostimulation during training, and learned approach to odors that followed the photostimulation...
June 2018: Learning & Memory
https://www.readbyqxmd.com/read/29763451/episodic-memory-and-delayed-recall-are-significantly-more-impaired-in-younger-patients-with-deficit-schizophrenia-than-in-elderly-patients-with-amnestic-mild-cognitive-impairment
#14
Buranee Kanchanatawan, Sookjaroen Tangwongchai, Thitiporn Supasitthumrong, Sira Sriswasdi, Michael Maes
BACKGROUND: Both amnestic mild cognitive impairment (aMCI) and schizophrenia, in particular deficit schizophrenia, are accompanied by cognitive impairments. The aim of the present study was to examine the cognitive differences between aMCI and (non)deficit schizophrenia. METHODS: Towards this end we recruited 60 participants with aMCI, 40 with deficit and 40 with nondeficit schizophrenia and 103 normal volunteers. Cognitive measures were assessed with the Consortium to Establish a Registry for Alzheimer's disease (CERAD) using the Verbal Fluency Test (VFT), Boston Naming Test (BNT), Mini-Mental State Examination (MMSE), Word list memory (WLM), Word list recall (WLRecall) and Word list recognition (WLRecognition)...
2018: PloS One
https://www.readbyqxmd.com/read/29762668/benchmarking-taxonomic-assignments-based-on-16s-rrna-gene-profiling-of-the-microbiota-from-commonly-sampled-environments
#15
Alexandre Almeida, Alex L Mitchell, Aleksandra Tarkowska, Robert D Finn
Background: Taxonomic profiling of ribosomal RNA (rRNA) sequences has been the accepted norm for inferring the composition of complex microbial ecosystems. QIIME and mothur have been the most widely used taxonomic analysis tools for this purpose, with MAPseq and QIIME 2 being two recently released alternatives. However, no independent and direct comparison between these four main tools has been performed. Here, we compared the default classifiers of MAPseq, mothur, QIIME, and QIIME 2 using synthetic simulated datasets comprised of some of the most abundant genera found in the human gut, ocean and soil environments...
May 11, 2018: GigaScience
https://www.readbyqxmd.com/read/29761715/a-survey-of-student-engagement-with-multiple-resources-in-an-undergraduate-physiology-course-retrieve-or-look-it-up
#16
Lisa C Anderson
Retrieval practice, a deep-learning technique in which the learner attempts to recall a concept of interest from memory, has been shown to be more effective than surface-learning techniques, such as rereading a textbook. Accordingly, textbook publishers are developing supplemental resources that are purported to improve student learning outcomes by encouraging deep learning and critical thinking. The purpose of this study is to 1) survey students in a physiology course about their use of multiple course resources; and 2) assess the effect of self-reported engagement in course resources on learning outcomes, as assessed by comparing course grades...
June 1, 2018: Advances in Physiology Education
https://www.readbyqxmd.com/read/29761018/behavioral-and-neurophysiological-abnormalities-during-cued-continuous-performance-tasks-in-patients-with-mild-traumatic-brain-injury
#17
Weixiang Zhao, Ruhong Wu, Suhong Wang, Haihui Qi, Yitao Qian, Suinuan Wang
Objective: This study's aim was to investigate the features and neural mechanisms of sustained attention in patients with mild traumatic brain injury (mTBI) by comparing and analyzing neuropsychological, behavioral, event-related potentials, and event-related desynchronization and synchronization between mTBI patients and healthy controls. Methods: Twenty mTBI patients with mTBI and 20 healthy controls underwent the Mini-Mental State Examination (MMSE) and a cued continuous performance task (AX-CPT)...
May 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29760675/feigning-amnesia-moderately-impairs-memory-for-a-mock-crime-video
#18
Ivan Mangiulli, Kim van Oorsouw, Antonietta Curci, Harald Merckelbach, Marko Jelicic
Previous studies showed that feigning amnesia for a crime impairs actual memory for the target event. Lack of rehearsal has been proposed as an explanation for this memory-undermining effect of feigning. The aim of the present study was to replicate and extend previous research adopting a mock crime video instead of a narrative story. We showed participants a video of a violent crime. Next, they were requested to imagine that they had committed this offense and to either feign amnesia or confess the crime. A third condition was included: Participants in the delayed test-only control condition did not receive any instruction...
2018: Frontiers in Psychology
https://www.readbyqxmd.com/read/29758479/move-to-learn-integrating-spatial-information-from-multiple-viewpoints
#19
Corinne A Holmes, Nora S Newcombe, Thomas F Shipley
Recalling a spatial layout from multiple orientations - spatial flexibility - is challenging, even when the global configuration can be viewed from a single vantage point, but more so when it must be viewed piecemeal. In the current study, we examined whether experiencing the transition between multiple viewpoints enhances spatial memory and flexible recall for a spatial configuration viewed simultaneously (Exp. 1) and sequentially (Exp. 2), whether the type of transition matters, and whether action provides an additional advantage over passive experience...
May 11, 2018: Cognition
https://www.readbyqxmd.com/read/29756215/attentional-refreshing-moderates-the-word-frequency-effect-in-immediate-and-delayed-recall-tasks
#20
Marlène Abadie, Valérie Camos
Using an online sample experiment, the study described herein addresses the fervent debate about the relationships between working memory and long-term memory (LTM). We manipulated refreshing opportunities and LTM status of memoranda by varying, respectively, the type of span tasks (simple span with short or long lists versus complex span tasks) and the frequency of the memory words (low versus high). In accordance with the hypothesis that refreshing is involved particularly in complex rather than simple span tasks, the frequency effect in immediate recall tests was reduced in the former...
May 14, 2018: Annals of the New York Academy of Sciences
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