novelty

新颖性
  • 文章类型: Journal Article
    无意义的信息增加了任务的新颖性,这使得很难依赖以前的学习,并提供对新任务学习的洞察力。这项研究调查了日常记忆中基于程序的动作脚本,用于虚拟现实中的膳食准备任务。样本(N=171)由3组组成,根据年龄和认知功能确定:年轻人(YA;n=61),认知正常的老年人(OA;n=82),和认知受损的老年人(IC;n=28)。三个小组完成了虚拟厨房协议,一种基于虚拟现实的学习和记忆衡量标准,用于烹饪熟悉的和荒谬的食物。结果表明,与OAs或IC相比,YAs对熟悉和无意义的饮食的召回率更高。此外,新颖的刺激(即,无意义的用餐任务)似乎对老年人的影响大于年轻人。在老年人中,与正常认知相比,认知受损与感觉和无意义饮食的表现均较低相关。所有三组在熟悉的任务上的表现都比无意义的任务更好。这些结果与以下观点一致:在基于程序的动作脚本的背景下,熟悉性可能比新颖性更有用。
    Nonsensical information increases task novelty, which makes it difficult to rely on previous learning and provides insight into the learning of new tasks. This study investigated procedural-based action scripts in everyday memory for meal preparation tasks in virtual reality. The sample (N = 171) consisted of 3 groups determined by age and cognitive function: young adults (YA; n = 61), older adults with normal cognition (OA; n = 82), and older adults with impaired cognition (IC; n = 28). The three groups completed the Virtual Kitchen Protocol, a virtual reality-based measure of learning and memory for cooking both familiar and nonsensical meals. Results showed that YAs had a greater recall for both familiar and nonsensical meals than OAs or ICs. Additionally, novel stimuli (i.e., nonsensical meal tasks) appear to impact older adults more than young adults. Among older adults, impaired cognition was associated with lower performance on both the sensical and nonsensical meals compared to normal cognition. All three groups performed better on familiar tasks than nonsensical tasks. These results were consistent with the notion that familiarity may be of greater use than novelty in the context of procedural-based action scripts.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    虽然对熟悉的和新颖的刺激的视觉反应已经得到了广泛的研究,当熟悉的刺激的神经元表征与新图像交错时,它们是如何受到影响的,尚不清楚。我们检查了来自执行视觉进行/不进行变化检测任务的小鼠的大规模数据集。经过八张图片的训练,六幅新颖的图像与两幅熟悉的图像交织在一起。出乎意料的是,我们发现,当熟悉的图像与新图像混合时,它们的行为表现会受到损害。当熟悉的图像与新的图像交织在一起时,他们表现的维度增加了,表明他们的神经元反应的扰动。此外,初级视觉皮层对熟悉图像的反应对高阶区域的反应预测较少,表明沟通效率较低。神经元之间的自发相关性预测了对新图像的反应,但对熟悉的人来说就不那么清楚了。我们的研究证明了新颖性对熟悉图像的表征的修改。
    While visual responses to familiar and novel stimuli have been extensively studied, it is unknown how neuronal representations of familiar stimuli are affected when they are interleaved with novel images. We examined a large-scale dataset from mice performing a visual go/no-go change detection task. After training with eight images, six novel images were interleaved with two familiar ones. Unexpectedly, we found that the behavioral performance in response to familiar images was impaired when they were mixed with novel images. When familiar images were interleaved with novel ones, the dimensionality of their representation increased, indicating a perturbation of their neuronal responses. Furthermore, responses to familiar images in the primary visual cortex were less predictive of responses in higher-order areas, indicating less efficient communication. Spontaneous correlations between neurons were predictive of responses to novel images, but less so to familiar ones. Our study demonstrates the modification of representations of familiar images by novelty.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    在创造性句子或短语利用的过程中,新颖且适当的评估会导致事件相关电位中观察到的不同大脑反应:N400反映了新颖性评估,而后期的负分量标志着适当的处理。当我们快速浏览具有不同新颖性的物体的图片时,我们在图像感知中是否有类似的大脑反应,功能/适当,和享乐价值?为了探索这个问题,向参与者展示了四个具有高或低功能和享乐特性的新颖对象图像,以及普通的产品图片,用指令专心观察和理解每个图像。我们发现新颖性处理与功能价值之间存在明显的分离:相对于普通对象图像,新颖性对象在N2-N400时间窗口中产生负偏转,而具有高功能价值的图像会引起更大的N2和后期负波(LNC),类似于为适当短语找到的后期分量。具有高享乐价值的对象图像,然而,与较小的N1振幅反映的较早的审美偏好相关,但未能引起LNC效应。因此,我们得出结论,新颖性的处理,功能,享乐价值是分离的,并且对享乐主义价值的感知(N1)早于新颖性处理(N400)和功能价值验证(LNC)。
    In the process of creative sentence or phrase utilization, novel and appropriate evaluations cause the different brain responses observed in event-related potentials: the N400 reflects the novelty evaluation, whereas a late negative component marks appropriate processing. Do we have similar brain reactions in image perception when we rapidly browse pictures of objects with different novelty, functional/appropriate, and hedonic value? To explore this question, participants were presented with four novel object images with high or low functional and hedonic properties, as well as the ordinary product images, with the instruction to attentively observe and understand each image. We found a clear dissociation between processing of novelty and functional value: novelty objects produced negative deflections in the N2-N400 time window relative to the ordinary object images, whereas images with high functional value elicited a larger N2 and late negative waves (LNC) resembling the late component found for the appropriate phrases. Object images with high hedonic value, however, were associated with earlier aesthetic preference reflected in smaller N1 amplitudes, but failed to elicit a LNC effect. We therefore conclude that the processing of novelty, functional, and hedonic value are dissociation, and the perception of hedonic value is earlier (N1) than the novelty processing (N400) and the verification of functional value (LNC).
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    生物体是复杂的细胞集合,产生光的细胞,射击鱼叉,分泌胶水。因此,确定在单个细胞水平上产生新颖性的机制对于理解多细胞生命如何进化至关重要。几十年来,进化发育生物学领域(Evo-Devo)一直在开发一种框架,用于将胚胎发育过程中出现的遗传变异与各种成年形式的出现联系起来。随着越来越多地获得新的单细胞组学技术和一系列操纵基因表达的技术,我们现在可以将这些查询向内扩展到单个细胞的级别。在这个观点中,我认为,将Evo-Devo框架应用于单细胞可以探索细胞的自然史,这曾经只有在组织层面才有可能。
    Organisms are complex assemblages of cells, cells that produce light, shoot harpoons, and secrete glue. Therefore, identifying the mechanisms that generate novelty at the level of the individual cell is essential for understanding how multicellular life evolves. For decades, the field of evolutionary developmental biology (Evo-Devo) has been developing a framework for connecting genetic variation that arises during embryonic development to the emergence of diverse adult forms. With increasing access to new single cell \'omics technologies and an array of techniques for manipulating gene expression, we can now extend these inquiries inward to the level of the individual cell. In this opinion, I argue that applying an Evo-Devo framework to single cells makes it possible to explore the natural history of cells, where this was once only possible at the organismal level.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    营销研究人员对不同信息模式的相对说服力感兴趣,比如叙述和争论。阐明和比较潜在机制的愿望是这项研究的核心,然而,由于缺乏可以跨模式有意义地使用的措施,阻碍了进展。在当前项目中,我们识别并验证了三种跨模态消息感知-准确性,新奇,和记忆性-可以调解不同模式和结果之间的关系。三项研究(研究1:N=105;研究2:N=322;研究3:N=248)证实了因子结构,判别效度,和跨模态(叙事与参数)所有三种信息感知的价值。这项研究的结果为研究人员提供了三种跨模式措施来支持比较信息效应研究。
    Marketing researchers are interested in the relative persuasiveness of different message modes, such as narratives and arguments. A desire to explicate and compare underlying mechanisms is central to this research, yet progress is hindered by a dearth of measures that can be used meaningfully across modes. In the current project, we identify and validate three cross-modal message perceptions - veracity, novelty, and memorability - that can mediate the relationship between different modes and outcomes. Three studies (Study 1: N = 105; Study 2: N = 322; Study 3: N = 248) confirmed the factor structure, discriminant validity, and cross-modal (narrative vs. argument) value of all three message perceptions. The results of this study provide researchers with three cross-modal measures to support comparative message effects research.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    辣木是一种具有降低胚胎死亡率的潜力的草药。关于辣木对家畜胚胎治疗的研究相当多。然而,以前的研究很少能解释这十年来与该主题相关的研究趋势,2010-2023年。本研究试图通过论文中的常用单词及其引用来观察与辣木处理牲畜胚胎有关的研究趋势。这项研究收集了来自Scopus的132个数据样本和来自PubMed的41个数据,并使用文献计量学方法对其进行了处理。使用的文献计量软件是Vosviewer,用于生成作者的关键词连接和趋势以及文献图像,用于描绘经常用作标题的单词以及内部内容和总引文/年的平均值。本研究还使用RStudio来补充Vosviewer进行文献计量学方法。结果表明,没有作者的关键词描述反刍动物而不是牛,并且没有动物的名称作为被用作样本文件标题的牲畜。也没有论文观察到辣木可以治疗牲畜的患病胚胎,并且以前用作样品的研究也具有较低的总引文/年平均值。
    Moringa oleifera is an herb that has the potential to reduce the mortality rate of an embryo. Research about Moringa oleifera treatment toward an embryo of livestock was quite a number. However, there were still very few previous studies that explain the trend of research related to that topic in this decade, 2010-2023. This study tried to observe the research trend related to Moringa oleifera treatment to embryos of livestock in terms of frequently used words inside papers along with their citations. This study gathered 132 data samples from Scopus and 41 data from PubMed and processed them using the bibliometric method. The bibliometric software used was Vosviewer to produce the image of the author\'s keyword connection and trend and biblioshiny for depicting frequently words used as a title and inside content and mean of total citation/year. This study also used R Studio to complement Vosviewer in conducting the bibliometric method. The result showed that there was no author\'s keyword that depicted ruminant-type animals instead of cow, and no name of the animal as livestock that was being used as a title of the sample papers. There were also no papers that observed Moringa oleifera to treat sick embryos of livestock and the previous studies used as samples also had a low mean of total citation/year.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    这篇评论批判性地审查了瞳孔测量对记忆研究的贡献,主要集中在增强我们对记忆编码和检索机制的理解上,主要研究识别记忆范式。证据支持瞳孔反应和记忆形成之间的密切联系,特别受检测到的新奇类型的影响。该建议调和了文献中有关瞳孔反应模式的不一致之处,这些模式可以预测成功的记忆形成。并强调了编码机制的重要意义。该评论还讨论了瞳孔的新旧效应及其在回忆和反映与熟悉或新颖性检测相关的大脑信号中的意义。此外,评估瞳孔反应作为真实记忆信号和区分真实记忆和错误记忆的能力。这些证据提供了对错误记忆性质的见解,并提供了对记忆扭曲所涉及的认知机制的新理解。当与严格的实验设计相结合时,瞳孔测量可以显着完善记忆编码和检索的理论模型。此外,将瞳孔测量与神经影像学和药物干预相结合被认为是未来研究的有希望的方向。
    This review critically examines the contributions of pupillometry to memory research, primarily focusing on its enhancement of our understanding of memory encoding and retrieval mechanisms mainly investigated with the recognition memory paradigm. The evidence supports a close link between pupil response and memory formation, notably influenced by the type of novelty detected. This proposal reconciles inconsistencies in the literature regarding pupil response patterns that may predict successful memory formation, and highlights important implications for encoding mechanisms. The review also discusses the pupil old/new effect and its significance in the context of recollection and in reflecting brain signals related to familiarity or novelty detection. Additionally, the capacity of pupil response to serve as a true memory signal and to distinguish between true and false memories is evaluated. The evidence provides insights into the nature of false memories and offers a novel understanding of the cognitive mechanisms involved in memory distortions. When integrated with rigorous experimental design, pupillometry can significantly refine theoretical models of memory encoding and retrieval. Furthermore, combining pupillometry with neuroimaging and pharmacological interventions is identified as a promising direction for future research.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    糖尿病是一种持续的代谢病症,其特征在于由于胰岛素分泌或功能受损而导致的血糖水平升高。天然抗糖尿病药物的寻找由于其潜在的有效性和安全性而受到关注。SessuviumPortulacastrum,沿海植物,传统上用于各种医疗目的。本研究通过分析其对参与碳水化合物代谢的关键酶的抑制作用,并探索其与关键靶蛋白的分子相互作用,研究了马齿轮轴水提物的抗糖尿病潜力。制备了SessuviumMosulacastrum的水提物并用于体外分析。提取物对α-淀粉酶和α-葡萄糖苷酶的活性降低,对葡萄糖吸收和餐后高血糖至关重要,被评估。分子对接技术用于探索提取物中活性化合物与糖尿病相关蛋白之间的潜在相互作用。包括BAX,GSK3β,和CADH。该研究表明,SessuviumMouracastrum水提物对α-淀粉酶和α-葡萄糖苷酶均具有显着的抑制作用,表明其降低葡萄糖吸收和餐后高血糖的潜力。此外,分子对接分析显示提取物中的活性化合物与参与糖尿病相关途径的关键蛋白之间的强结合相互作用,即凋亡途径,糖原合成,和细胞粘附。这项研究的发现强调了Sessuvium马齿轮轴水提取物的有前途的抗糖尿病潜力。即将进行的研究应该注意从天然来源中分离和表征对这些抗糖尿病疗法产生影响的活性化合物。
    Diabetes mellitus is a persistent metabolic condition marked by elevated blood glucose levels due to compromised insulin secretion or functionality. The search for natural antidiabetic agents has gained attention due to their potential effectiveness and safety profiles. Sessuvium portulacastrum, a coastal plant, has been traditionally used for various medicinal purposes. This study investigates the antidiabetic potential of Sessuvium portulacastrum aqueous extract by analyzing its inhibitory effects on key enzymes involved in carbohydrate metabolism and exploring its molecular interactions with critical target proteins. The aqueous extract of Sessuvium portulacastrum was prepared and used for in vitro analysis. The reduced activity of the extract against α-amylase and α-glucosidase enzymes, crucial in glucose absorption and postprandial hyperglycemia, was assessed. Molecular docking techniques were employed to explore the potential interactions between active compounds in the extract and diabetes-related proteins, including BAX, GSK3β, and CADH. The study revealed significant inhibition of both alpha-amylase and alpha-glucosidase enzymes by Sessuvium portulacastrum aqueous extract, indicating its potential to reduce glucose absorption and postprandial hyperglycemia. Moreover, the molecular docking analysis demonstrated strong binding interactions between active compounds in the extract and key proteins involved in diabetes-related pathways, namely apoptotic pathways, glycogen synthesis, and cell adhesion. The findings of this study highlight the promising antidiabetic potential of Sessuvium portulacastrum aqueous extract. Upcoming research should get an attention on isolating and characterizing the active compounds responsible for these effects on antidiabetic therapies from natural sources.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    山孢,通常被称为“Giloy”或“Guduchi”,“是一种在传统医学系统中具有丰富历史的药用植物。Tinospora茎的水提取物由于其已报道的药理活性而引起了人们的关注。本研究旨在研究水提取物的体外生物学特性,并通过计算机研究补充研究结果,以深入了解潜在的分子相互作用。对Tinospora茎水提取物进行了一系列体外测定,以评估其生物学特性。使用体外试验评价抗炎活性。为了补充体外研究结果,进行了涉及分子对接分析的计算机研究,以预测提取物成分与相关生物分子靶标之间的潜在相互作用。体外评估显示了Tinosporacerdifolia茎水提取物的显着抗炎活性,其抑制促炎细胞因子产生的能力证明了这一点。计算机模拟研究提供了对提取物的生物活性成分与关键炎症和抗氧化剂靶标之间的分子相互作用的见解,进一步支持观察到的生物学特性。联合的体外生物学分析和计算机模拟研究提供了一个全面的评估Tinosporacordifolia茎水提取物的潜在治疗特性。已证明的抗炎活性与Tinosporacordifolia的传统用途一致,并表明其在治疗炎症和氧化应激相关疾病中的潜力。计算机上的见解提供了对提取物作用模式的分子理解,加强进一步研究和开发来自Tinosporacerdifolia的天然产品的理由,用于药物和医药应用。
    Tinospora cordifolia, commonly known as \"Giloy\" or \"Guduchi,\" is a medicinal plant with a rich history in traditional medicine systems. The aqueous extract of Tinospora cordifolia stems has garnered attention due to its reported pharmacological activities. This study aimed to investigate the in vitro biological properties of the aqueous extract and complement the findings with in silico studies to gain insights into potential molecular interactions. The Tinospora cordifolia stem aqueous extract was subjected to a battery of in vitro assays to assess its biological properties. Anti-inflammatory activity was evaluated using invitro assay. To complement the in vitro findings, in silico studies involving molecular docking analyses were conducted to predict potential interactions between the extract\'s constituents and relevant biomolecular targets. The in vitro evaluation revealed significant anti-inflammatory activity of the Tinospora cordifolia stem aqueous extract, as evidenced by its ability to suppress the production of pro-inflammatory cytokines. In silico studies provided insights into the molecular interactions between the extract\'s bioactive constituents and key inflammatory and antioxidant targets, further supporting the observed biological properties. The combined in vitro biological assays and in silico studies offer a comprehensive assessment of the Tinospora cordifolia stem aqueous extract\'s potential therapeutic properties. The demonstrated anti-inflammatory activities align with the traditional use of Tinospora cordifolia and suggest its potential in managing inflammatory and oxidative stress-related disorders. The in silico insights provide a molecular understanding of the extract\'s mode of action, strengthening the rationale for further investigation and development of natural products derived from Tinospora cordifolia for pharmaceutical and medicinal applications.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    背景:新颖性的进化是进化生物学的中心主题,然而,研究具有明显不连续起源的性状的起源仍然是一个重大挑战。毒液系统是研究这种现象的非常适合的模型,因为它们在多个生物复杂性级别上捕获了新颖性的几个方面。然而,虽然有一些关于个体毒素进化的知识,对整个毒液系统的进化知之甚少。揭示新性状进化的一种方法是研究不太专业的系列同源物,即在一个共有发育起源的有机体中重复的性状。这种方法在具有重复身体节段的动物中特别有用,例如,cent。
    结果:这里,我们研究了有毒结石cent(Lithobiomorpha)后腿上的防御性端足腺器官的形态和生化方面,使用多方法方法,包括行为观察,比较形态学,蛋白质组学,比较转录组学和分子系统发育学。我们表明,前毒系统和后端足防御系统在功能上是收敛的系列同源物,其中一个(远足防御)代表了另一个(毒液)的假定早期进化状态的模型。毒腺和端足腺体似乎是从相同类型的表皮腺(四细胞直管型)进化而来的,尽管端足防御分泌物与cent毒液具有很大程度的组成重叠,这些相似性主要是通过聚集募集远近相关的毒素样成分而产生的.这两个系统都由倾向于功能创新的元素组成,这些元素跨越了从蛋白质到腺体的生物复杂性水平,在促进新颖性进化的特性中,分子和形态特征之间具有明显的相似之处。
    结论:Lelthobiomorphoftelopodal防御系统的进化提供了间接的经验支持,以证明the毒系统的假设进化起源的合理性,这是通过功能创新和现有表皮腺体的逐渐专业化而发生的。因此,我们的结果说明了持续的转型和功能创新如何在更高的生物复杂性水平上驱动新颖性的明显不连续出现。
    BACKGROUND: Evolution of novelty is a central theme in evolutionary biology, yet studying the origins of traits with an apparently discontinuous origin remains a major challenge. Venom systems are a well-suited model for the study of this phenomenon because they capture several aspects of novelty across multiple levels of biological complexity. However, while there is some knowledge on the evolution of individual toxins, not much is known about the evolution of venom systems as a whole. One way of shedding light on the evolution of new traits is to investigate less specialised serial homologues, i.e. repeated traits in an organism that share a developmental origin. This approach can be particularly informative in animals with repetitive body segments, such as centipedes.
    RESULTS: Here, we investigate morphological and biochemical aspects of the defensive telopodal glandular organs borne on the posterior legs of venomous stone centipedes (Lithobiomorpha), using a multimethod approach, including behavioural observations, comparative morphology, proteomics, comparative transcriptomics and molecular phylogenetics. We show that the anterior venom system and posterior telopodal defence system are functionally convergent serial homologues, where one (telopodal defence) represents a model for the putative early evolutionary state of the other (venom). Venom glands and telopodal glandular organs appear to have evolved from the same type of epidermal gland (four-cell recto-canal type) and while the telopodal defensive secretion shares a great degree of compositional overlap with centipede venoms in general, these similarities arose predominantly through convergent recruitment of distantly related toxin-like components. Both systems are composed of elements predisposed to functional innovation across levels of biological complexity that range from proteins to glands, demonstrating clear parallels between molecular and morphological traits in the properties that facilitate the evolution of novelty.
    CONCLUSIONS: The evolution of the lithobiomorph telopodal defence system provides indirect empirical support for the plausibility of the hypothesised evolutionary origin of the centipede venom system, which occurred through functional innovation and gradual specialisation of existing epidermal glands. Our results thus exemplify how continuous transformation and functional innovation can drive the apparent discontinuous emergence of novelties on higher levels of biological complexity.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

公众号