sensory

感官
  • 文章类型: Journal Article
    背景和目的:Fugl-Meyer运动能力评估和感觉评估量表(FMA)是中风患者上肢和下肢感觉运动损害最常用和推荐的结果指标。这项研究的目的是进行跨文化翻译和将量表改编为波兰语,并评估FMA对缺血性中风患者上肢和下肢部分的运动表现和感觉的可靠性。方法:波兰语版本的FMA(FMA-PL)是使用一组专家进行的前后翻译开发的,然后由法官小组根据国际准则进行评估。该研究涉及86名患者(F=30,M=56,即35%;患者平均年龄为64±12岁,36的右侧笔划和50的左侧笔划)。FMA-PL由两名经验丰富的神经物理治疗师进行了两次,评估之间有2小时的间隔(重测和评估者之间)。通过计算组内相关系数(ICC)来定义结果测量的可靠性。还计算了测量的标准误差(SEM)和最小可检测变化(MDC)。测试的内部一致性由Cronbach的α指标确定。结果:在FMA-PL量表上评估了三个域。从整个测试来看,结果在12-124分范围内获得:FMA-UE-PL2为64分,FMA-LE-PL4为34分,FMA-S-PL0为24分。对于总FMA-PL评分和每个域的结果,ICC值在0.99-1.00的范围内。针对测试-重测测量计算的整个FMA-PL的SEM和MDC分别为0.22和1.60。在同一研究者的重复测量期间获得的总FMA-PL评分的SEM和MDC分别为1.3和3.5分,分别。为总FMA-PL计算的Cronbachα值,FMA-UE-PL,FMA-LE-PL,和FMA-S-PL项目分别为0.938-0.939、0.932-0.934和0.634-0.722。结论:波兰语版本的FMA是亚急性和慢性中风阶段患者上肢和下肢运动和感觉评估的一致且可靠的结果指标。
    Background and Purpose: The Fugl-Meyer Assessment of Motor Performance and Sensory Assessment Scale (FMA) is the most commonly used and recommended outcome measure for the sensorimotor impairment of the upper and lower limbs in stroke patients. The aim of this study was to perform cross-cultural translation and adaptation of the scale into Polish and to evaluate the FMA\'s reliability of motor performance and sensation of the upper and lower limb sections among ischemic stroke patients. Methods: The Polish version of the FMA (FMA-PL) was developed using a forward-backward translation performed by a group of experts and then evaluated by a panel of judges according to international guidelines. The study involved 86 patients (F = 30, M = 56, i.e., 35%; the average age of patients was 64 ± 12 years, 36 with right-sided stroke and 50 with left-sided stroke). The FMA-PL was carried out twice by two experienced neurological physiotherapists with a 2 h gap between assessments (test-retest and inter-rater). The reliability of the outcome measure was defined by calculating the intraclass correlation coefficient (ICC). The standard error of measurement (SEM) and the minimum detectable change (MDC) were also calculated. The internal consistency of the test was determined by the Cronbach\'s alpha indicator. Results: Three domains were evaluated on the FMA-PL scale. From the whole test, results were obtained in the range of 12-124 points: 64 points for FMA-UE-PL 2, 34 points for FMA-LE-PL 4, and 24 points for FMA-S-PL 0. The ICC values were in the range of 0.99-1.00 for the total FMA-PL score and the results of each domain. The SEM and MDC for the entire FMA-PL calculated for test-retest measurements were 0.22 and 1.60, respectively. The SEM and MDC for the total FMA-PL score obtained during repeated measurements of the same investigator were 1.3 and 3.5 points, respectively. The Cronbach\'s alpha values calculated for the total FMA-PL, FMA-UE-PL, FMA-LE-PL, and FMA-S-PL items amounted to 0.938-0.939, 0.932-0.934, and 0.634-0.722, respectively. Conclusions: The Polish version of the FMA is a consistent and reliable outcome measure for the motor and sensory evaluation of the upper and lower limbs for patients in subacute and chronic stroke stages.
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  • 文章类型: Journal Article
    什么是已知的?将身体移入\'定型\',\'重复\',“仪式化”或“不寻常”方式是接受自闭症诊断的标准的一部分。然而,这些运动的原因及其个人价值还没有得到很好的理解。某些移动方式已成为混乱的一部分,并收到了负面的判断,而其他运动则没有。这篇论文补充了什么?我们搜索了在线博客,寻找自闭症成年人写的运动描述,使用他们首选的语言和定义。博客作者说,许多类型的运动吸引了负面的判断,包括运动中表现出的不协调,在不寻常的地方跳舞或反复移动,比如在刺激的时候。然而,运动提供了个人利益,可以增强思考和注意力,提供有意义的例程,有助于感官调节,释放能量,提高身体意识,情绪调节和加强自我认同。对实践和政策的影响运动可能是一种福祉资源,用来减少分心,压倒性的,自闭症患者的困惑和痛苦。这应该在个人应对策略和心理治疗中考虑。这项研究中提供的例子可以为自闭症评估提供信息,以确保运动的含义与运动的外观一起考虑。一些运动,如刺激,与许多其他运动方式具有相同的功能,包括跳舞和锻炼,如果反映在政策和实践中,这可能有助于减少自闭症患者的耻辱。增进理解对于告知如何评估自闭症很重要,以及自闭症的个人经历是如何被听到的。
    UNASSIGNED: What is already known?Moving the body in \'stereotyped\', \'repetitive\', \'ritualised\' or \'unusual\' ways is part of the criteria for receiving a diagnosis of autism. However, the reasons for these movements and their personal value are not well understood. Certain ways of moving have become part of a disorder, and have received negative judgements, whereas other movements have not.What this paper adds?We searched online blogs for descriptions of movement written by autistic adults, using their preferred language and definitions. The blog authors said that many types of movement attracted negative judgement, including mis-coordination shown during sports, dancing in unusual places or moving repetitively, such as when stimming. However, movement provided personal benefits, and could enhance thinking and focus, provide meaningful routine, contribute to sensory regulation, release energy, increase body awareness, emotion regulation and strengthen self-identity.Implications for practice and policyMovement could be a well-being resource, used to reduce distraction, overwhelm, confusion and distress for autistic people. This should be considered within personal coping strategies and psychological therapies. The examples provided in this study could inform autism assessments, to ensure that the meanings of movements are considered alongside the appearances of movement. Some movements such as stimming have the same functions as many other ways of moving, including dancing and exercising, which could help to reduce stigma around being autistic if reflected in policy and practice. Improving understanding is important for informing how autism is assessed, and how personal experiences of being autistic are heard.
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  • 文章类型: Journal Article
    微跳是基本的动眼现象和复杂的认知功能过程之间的接口,对于微妙的实验和充分的统计分析,它们也是一个挑战。在特殊主题问题的第二部分(第一部分见4),作者提出了一系列文章,这些文章表明,微跳仍然是科学研究的一个有趣和有益的领域,在许多领域的感官研究的前沿,感性的,和认知过程。.在他们的文章“复杂决策过程中对认知努力和情绪唤醒的瞳孔和微跳反应”中,44%urawska,Duchowski,&Wichary(1)研究了情感启动下多属性决策过程中瞳孔和微跳对信息处理的反应。参与者被随机分配到三个情感启动条件(中性,令人厌恶的,和色情),并指示做出歧视性决定。正如作者所假设的那样,结果表明,微小扫视速率抑制和瞳孔扩张,取决于决策前的认知努力,并通过情感启动来调节。逆向启动增加了瞳孔和微跳对信息处理工作的反应。结果表明,瞳孔反应受情感启动的影响比微扫视率更大。根据瞳孔和微视行为的神经心理学机制讨论了结果。在文章“在单眼和双眼刺激条件下的微跳速率特征相关”中,Leube,Rifai,&Wahl(2020)研究了微跳在单眼和双眼条件下的定向分布和速率。在两种刺激条件下,参与者都固定了一个Gabor贴片,该贴片在很宽的空间频率范围内以45°或135°的方向随机呈现。微扫视大多是水平取向的,而与光栅的空间频率无关。该结果在两种刺激条件之间是一致的。这项研究发现,微跳跳速率特征曲线在两种刺激条件之间相关,因此,将微跳的使用扩展到临床应用,由于参数为对比敏感度,在临床研究中经常进行单眼测量。马丁的这项研究“高速连续视觉搜索过程中的微跳”,戴维斯,Riesenhuber,&Thorpe(3)提供了对视觉搜索过程中发生的微跳的分析,针对小脸粘贴到杂乱的背景照片或简单的灰色背景。指示参与者在变化的场景中瞄准奇异的3度直立或倒置的面孔。一旦参与者的目光到达目标面部,在不同的随机位置显示了一张新的面孔。无论实验背景如何(例如背景场景,没有背景场景),或目标偏心(从4到20度的视角),作者发现,微视速率在12毫秒内降至接近零的水平。在刺激发作后和第一次扫视之前,几乎没有任何微跳。在大约20%的试验中,有一个单一的微扫视,几乎立即发生在前一个扫视的偏移。作者认为,需要通过处理刺激的视觉层次结构进行一次前馈才能实现长时间的连续视觉搜索,并提供证据证明微扫视可以发挥感知功能,例如在连续视觉搜索过程中纠正扫视或实现面向任务的目标。虽然许多研究已经描述了视觉注视过程中的眼球运动,包括微跳,在大多数情况下,只有水平和垂直分量被记录和分析。关于微跳的扭转成分知之甚少。在这项研究中,“在固定和视动刺激期间快速阶段的微跳的扭转成分”Sadeghpour&Otero-Millan(5)记录了在固定和扭转视动刺激期间围绕三个旋转轴的眼球运动。作者发现,固定过程中微扫视的扭转分量的平均幅度为0.34±0.07度,速度遵循主序列,其斜率与水平和垂直分量相当。微扫视过程中扭转位移的大小与水平分量相关,而与垂直分量无关。与固定刺激固定过程中产生的微跳相比,在存在视动刺激的情况下,诱导眼球震颤产生更频繁和更大的扭转快速阶段。快速相的扭转分量和垂直聚散分量随速度的增加而增加。在以前的研究中,微跳被解释为任务负荷的心理生理指标。到目前为止,不同类型的任务需求如何影响微扫视率仍在争论中。Schneider等人在他们的文章“任务难度与微视速率之间的相互作用:视觉负荷的关键作用的证据”中。(6)检查了视觉负荷之间的关系,心理负荷和微视速率。参与者执行了一个连续的绩效任务(n-back),其中视觉任务负载(字母与抽象数字)和心理任务负荷(1-back到4-back)作为受试者内部变量进行操纵。眼动追踪数据,记录了绩效数据和主观工作量。数据分析显示,对于高视觉需求的刺激(即抽象数字),微扫视速率增加,而精神需求(n-back-level)并不调节微视速率。作者得出结论,微小扫视率反映了任务的视觉负荷,而不是其心理负荷。这一结论符合克鲁格等人的命题。(2)“微跳区分看和看”,将感官与认知现象联系起来。当前的特殊主题为围绕微跳的研究景观增加了几个新的有趣方面。它们仍然是跨学科研究和跨学科应用的有吸引力的焦点。因此,正如在本期特别专题的第一部分中已经指出的那样,对微跳的研究不仅会持续下去,但随着知识库的扩展而不断发展。
    Microsaccades are at the interface between basic oculomotor phenomena and complex processes of cognitive functioning, and they also have been a challenge for subtle experimentation and adequate statistical analysis. In the second part of the special thematic issue (for the first part see  4) the authors present a series of articles which demonstrate that microsaccades are still an interesting and rewarding area of scientific research the forefront of research in many areas of sensory, perceptual, and cognitive processes.. In their article \"Pupillary and microsaccadic responses to cognitive effort and emotional arousal during complex decision making\" Krejtz, Żurawska, Duchowski, & Wichary (1) investigate pupillary and microsaccadic responses to information processing during multi-attribute decision making under affective priming. The participants were randomly assigned into three affective priming conditions (neutral, aversive, and erotic) and instructed to make discriminative decisions. As hypothesized by the authors, the results showed microsaccadic rate inhibition and pupillary dilation, depending on cognitive effort prior to decision and moderated by affective priming. Aversive priming increased pupillary and microsaccadic responses to information processing effort. The results indicate that pupillary response is more influenced by affective priming than microsaccadic rate. The results are discussed in the light of neuropsychological mechanisms of pupillary and microsaccadic behavior. In the article \"Microsaccadic rate signatures correlate under monocular and binocular stimulation conditions\" Essig, Leube, Rifai, & Wahl (2020) investigate microsaccades with respect to their directional distribution and rate under monocular and binocular conditions. In both stimulation conditions participants fixated a Gabor patch presented randomly in orientation of 45° or 135° over a wide range of spatial frequencies. Microsaccades were mostly horizontally oriented regardless of the spatial frequency of the grating. This outcome was consistent between both stimulation conditions. This study found that the microsaccadic rate signature curve correlates between both stimulation conditions, therefore extending the use of microsaccades to clinical applications, since parameters as contrast sensitivity, have frequently been measured monocularly in the clinical studies. The study \"Microsaccades during high speed continuous visual search\" by Martin, Davis, Riesenhuber, & Thorpe (3) provides an analysis of the microsaccades occurring during visual search, targeting to small faces pasted either into cluttered background photos or into a simple gray background.  Participants were instructed to target singular 3-degree upright or inverted faces in changing scenes.  As soon as the participant\'s gaze reached the target face, a new face was displayed in a different random location.  Regardless of the experimental context (e.g. background scene, no background scene), or target eccentricity (from 4 to 20 degrees of visual angle), The authors found that the microsaccade rate dropped to near zero levels within 12 milliseconds.  There were almost never any microsaccades after stimulus onset and before the first saccade to the face. In about 20% of the trials, there was a single microsaccade that occurred almost immediately after the preceding saccade\'s offset.  The authors argue that a single feedforward pass through the visual hierarchy of processing a stimulus is needed to effectuate prolonged continuous visual search and provide evidence that microsaccades can serve perceptual functions like correcting saccades or effectuating task-oriented goals during continuous visual search. While many studies have characterized the eye movements during visual fixation, including microsaccades, in most cases only horizontal and vertical components have been recorded and analyzed. Little is known about the torsional component of microsaccades. In the study \"Torsional component of microsaccades during fixation and quick phases during optokinetic stimulation\" Sadeghpour & Otero-Millan (5) recorded eye movements around the three axes of rotation during fixation and torsional optokinetic stimulus. The authors found that the average amplitude of the torsional component of microsaccades during fixation was 0.34 ± 0.07 degrees with velocities following a main sequence with a slope comparable to the horizontal and vertical components. The size of the torsional displacement during microsaccades was correlated with the horizontal but not the vertical component. In the presence of an optokinetic stimulus a nystagmus was induced producing  more frequent and larger torsional quick phases compared to microsaccades produced during fixation of a stationary stimulus. The torsional component and the vertical vergence component of quick phases increased with higher velocities. In previous research, microsaccades have been interpreted as psychophysiological indicators of task load. So far, it is still under debate how different types of task demands are influencing microsaccade rate. In their article \"The interplay between task difficulty and microsaccade rate: Evidence for the critical role of visual load\" Schneider et al. (6) examined the relation between visual load, mental load and microsaccade rate. The participants carried out a continuous performance task (n-back) in which visual task load (letters vs. abstract figures) and mental task load (1-back to 4-back) were manipulated as within-subjects variables. Eye tracking data, performance data as well as subjective workload were recorded. Data analysis revealed an increased level of microsaccade rate for stimuli of high visual demand (i.e. abstract figures), while mental demand (n-back-level) did not modulate microsaccade rate. The authors concluded that microsaccade rate reflects visual load of a task rather than its mental load. This conclusion is in accordance with the proposition of Krueger et al. (2) \"Microsaccades distinguish looking from seeing\", linking sensory with cognitive phenomena. The present special thematic issue adds several new interesting facets to the research landscape around microsaccades. They still remain an attractive focus of interdisciplinary research and transdisciplinary applications. Thus, as already noted in the first part of this special thematic issue, research on microsaccades will not only endure, but keep evolving as the knowledge base expands.
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  • 文章类型: Journal Article
    嗅觉感觉神经元(OSN)是哺乳动物一生中连续产生的几种神经元类型之一。长期以来,人们一直认为嗅觉感觉神经发生的持久性超出了早期发育的范围,其功能只是为了替换因暴露于环境损害而丢失或受损的神经元。嗅觉感觉神经发生也可能发挥适应性功能的可能性已经得到了相对较少的考虑,很大程度上是由于假设新OSN的生成相对于OSN亚型是随机的,由单个气味受体基因定义,每个神经前体在数百种可能性中随机选择表达。因此,预测不同OSN亚型的相对出生率是恒定的,并且不受嗅觉体验的影响。这个假设受到质疑,然而,有证据表明,特定OSN亚型的出生率可以通过嗅觉剥夺来操纵嗅觉体验而选择性地改变,富集,和条件范式。此外,对损伤后OSN人群恢复的研究提供了进一步的证据,表明嗅觉感觉神经发生在亚型方面可能不是严格随机的。在这里,我们回顾了这些证据,并考虑了特定嗅觉体验可以以亚型选择性方式调节嗅觉感觉神经发生率的前景的机制和功能含义。
    Olfactory sensory neurons (OSNs) are one of a few neuron types that are generated continuously throughout life in mammals. The persistence of olfactory sensory neurogenesis beyond early development has long been thought to function simply to replace neurons that are lost or damaged through exposure to environmental insults. The possibility that olfactory sensory neurogenesis may also serve an adaptive function has received relatively little consideration, largely due to the assumption that the generation of new OSNs is stochastic with respect to OSN subtype, as defined by the single odorant receptor gene that each neural precursor stochastically chooses for expression out of hundreds of possibilities. Accordingly, the relative birthrates of different OSN subtypes are predicted to be constant and impervious to olfactory experience. This assumption has been called into question, however, by evidence that the birthrates of specific OSN subtypes can be selectively altered by manipulating olfactory experience through olfactory deprivation, enrichment, and conditioning paradigms. Moreover, studies of recovery of the OSN population following injury provide further evidence that olfactory sensory neurogenesis may not be strictly stochastic with respect to subtype. Here we review this evidence and consider mechanistic and functional implications of the prospect that specific olfactory experiences can regulate olfactory sensory neurogenesis rates in a subtype-selective manner.
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  • 文章类型: Journal Article
    年龄相关的听力困难具有复杂的病因,包括感觉耳蜗的退行性过程。耳蜗包括传入的开始,上行听觉通路,但也接受传出反馈神经支配的两个独立群体的脑干神经元:内侧耳蜗和外侧耳蜗途径,支配外毛细胞和听觉神经纤维在内毛细胞上突触,分别。人们认为,在困难的条件下,会改善听力,例如高背景噪声。这里,我们比较了年轻成年沙鼠和老年沙鼠沿音调轴的橄榄耳蜗传出神经支配密度(约为其最大寿命潜力的50%),与年龄相关的听力损失的经典动物模型。
    用抗突触蛋白和抗肌球蛋白VIIa免疫组织化学标记传入突触末端和感觉毛细胞,分别。毛细胞的数量,传出端子的数量,并在Corti器官的七个位置对传出神经支配区域进行了量化。
    沙鼠中人工耳蜗神经支配的位素分布与先前显示的其他物种相似,假定的外侧耳蜗神经支配(内毛细胞区域)有轻微的顶端耳蜗偏向,和假定的内侧橄榄耳蜗神经支配的宽中耳蜗峰(外毛细胞区域)。我们发现有意义,与年龄相关的内毛细胞和外毛细胞区域的总体传出神经支配下降。然而,在计算传出目标结构中与年龄相关的损失时,在内毛细胞区域中存活元素的神经支配密度没有变化。对于外毛细胞,孤儿的外毛细胞明显增加,即,缺乏传出神经支配,被观察到。仍然受到神经支配的存活外毛细胞保留了几乎正常的神经支配。
    跨物种的比较表明了一种基本的衰老情况,即外部毛细胞,I型传入,以及与之相关的传出者,随着年龄的增长稳步消亡,但是保留幸存的耳蜗电路基本完好无损,直到高龄,超过物种最大寿命潜力的50%。在外毛细胞区域,MOC变性可能先于外毛细胞死亡,留下假定的瞬时孤儿外毛细胞群,不再受到传出控制。
    UNASSIGNED: Age-related hearing difficulties have a complex etiology that includes degenerative processes in the sensory cochlea. The cochlea comprises the start of the afferent, ascending auditory pathway, but also receives efferent feedback innervation by two separate populations of brainstem neurons: the medial olivocochlear and lateral olivocochlear pathways, innervating the outer hair cells and auditory-nerve fibers synapsing on inner hair cells, respectively. Efferents are believed to improve hearing under difficult conditions, such as high background noise. Here, we compare olivocochlear efferent innervation density along the tonotopic axis in young-adult and aged gerbils (at ~50% of their maximum lifespan potential), a classic animal model for age-related hearing loss.
    UNASSIGNED: Efferent synaptic terminals and sensory hair cells were labeled immunohistochemically with anti-synaptotagmin and anti-myosin VIIa, respectively. Numbers of hair cells, numbers of efferent terminals, and the efferent innervation area were quantified at seven tonotopic locations along the organ of Corti.
    UNASSIGNED: The tonotopic distribution of olivocochlear innervation in the gerbil was similar to that previously shown for other species, with a slight apical cochlear bias in presumed lateral olivocochlear innervation (inner-hair-cell region), and a broad mid-cochlear peak for presumed medial olivocochlear innervation (outer-hair-cell region). We found significant, age-related declines in overall efferent innervation to both the inner-hair-cell and the outer-hair-cell region. However, when accounting for the age-related losses in efferent target structures, the innervation density of surviving elements proved unchanged in the inner-hair-cell region. For outer hair cells, a pronounced increase of orphaned outer hair cells, i.e., lacking efferent innervation, was observed. Surviving outer hair cells that were still efferently innervated retained a nearly normal innervation.
    UNASSIGNED: A comparison across species suggests a basic aging scenario where outer hair cells, type-I afferents, and the efferents associated with them, steadily die away with advancing age, but leave the surviving cochlear circuitry largely intact until an advanced age, beyond 50% of a species\' maximum lifespan potential. In the outer-hair-cell region, MOC degeneration may precede outer-hair-cell death, leaving a putatively transient population of orphaned outer hair cells that are no longer under efferent control.
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  • 文章类型: Journal Article
    面包生产中的原料和工艺参数可以调节血糖指数,这本身与提供更好的饥饿满意度和保持更好的饱腹感有关。这项研究的目的是调查是否使用未精制的小麦粉或在配方中添加完整的谷物或交替烘烤时间会对物理特性产生影响,感官质量,小麦酸面团面包中的血糖指数和食欲感觉。在研究中,三种类型的商业部分烘焙冷冻酸面团面包,使用两次不同的时间(长烘烤时间和短烘烤时间)烘烤至最终烘烤。对10名健康成年人进行了随机对照交叉试验,他们食用了足够量的面包以摄取50克可用碳水化合物。参与者自我报告食欲感觉(想吃东西,饥饿,丰满度,满意,食欲)在180分钟的时间内使用10厘米的视觉模拟量表(VAS)量表。此外,面包产品具有整体可接受性,并在JAR“大约正确”的量表上检查了不同的感官属性。不同的面包配方(精制面粉,未精制的小麦粉,谷物粉或完整谷物)和不同长度的烘烤时间显着影响(p<0.005)物理,产品的质地和感官特征。上述参数的改变降低了血糖指数,但不显著(p>0.005)。低GI之间没有发现相关性,饱腹感和饱腹感。饱腹感和饱腹感的喜欢评分和曲线下面积(iAUC)的增量计算为添加谷物的酸面团面包中最高。
    Raw materials and process parameters in bread production can modulate the glycemic index, which on itself has been linked with provision of better hunger satisfaction and maintaining better satiation. The objective of this research was to investigate if using unrefined wheat flour or the addition of intact cereals in formulation or alternating the baking time would have an effect on physical characteristics, sensory quality, glycaemic index and appetite sensations in wheat sourdough bread. In the study, three types of commercial part-baked frozen sourdough bread, baked to the final baking for two different times (long and short baking time) were used. A randomized controlled crossover trial was performed with 10 healthy adults who consumed sufficient quantity of bread to ingest 50 g available carbohydrates. Participants self-reported appetite sensations (desire to eat, hunger, fullness, satisfaction, appetite) on a 10 cm visual analog scale (VAS) scale in a course of 180 min. In addition, bread products were subjected to overall acceptability and different sensory attributes were examined on JAR \"just about right\" scale. Different bread formulations (refined flour, unrefined wheat flour, cereal flour or intact cereals) and different length of baking time significantly influenced (p < 0.005) physical, textural and sensory features of products. The alternation of aforementioned parameters decreased the glycemic index, but not significantly (p > 0.005). No correlation was found between lower GI, satiety and satiation. Liking score and incremental area under the curve (iAUC) of satiety and satiation were calculated as highest in sourdough bread with added cereals.
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  • 文章类型: Journal Article
    油凝胶,其特征是由凝胶剂构成的液体油形成的半固体基质,正在成为食品配方的关键创新,主要是由于它们通过掺入更健康的脂肪来增强产品营养特征的能力。这篇综述探讨了将油凝胶整合到不同的食物基质中,检查它们对纹理的影响,口感,和整体感官特征。通过对当前研究的广泛分析,本文说明了在不同的食品应用中使用各种结构化剂创建的油凝胶的多功能性。它还解决了使用油凝胶所固有的挑战,包括通过不同的储存和加工条件保持其稳定性和一致性,驾驭有关油凝胶剂安全性和可接受性的监管环境,面临更高的生产成本。总的来说,这篇全面的综述强调了油凝胶作为一种有前途的工具的潜力,可以在食品中实现理想的质地和感官属性,同时还确定了未来研究和开发的领域。
    Oleogels, characterized by their semisolid matrix formed from liquid oil structured by gelators, are emerging as a pivotal innovation in food formulation, primarily due to their capacity to enhance the nutritional profile of products by incorporating healthier fats. This review explored the integration of oleogels into diverse food matrices, examining their impact on texture, mouthfeel, and overall sensory characteristics. Through an extensive analysis of current research, this paper illustrates the versatility of oleogels created with a variety of structuring agents across different food applications. It also addresses the challenges inherent in the use of oleogels, including the preservation of their stability and consistency through varying storage and processing conditions, navigating the regulatory landscape concerning oleogelator safety and acceptability, and confronting higher production costs. Overall, this comprehensive review highlights the potential of oleogels as a promising tool for achieving desirable textural and sensory attributes in food products while also identifying areas for future research and development.
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  • 文章类型: Journal Article
    体现方法认为,与环境的相互作用在大脑发育中起着至关重要的作用,而运动产生的感觉效应的存在是至关重要的。胎儿的运动最初是随机的。然后,运动的重复执行在它和它的感官效果之间建立了联系,允许选择产生预期感觉的动作。在胎儿期,大脑从短暂的胎儿回路发展到永久的皮质回路,出生后就完成了发育。因此,这个过程必须涉及胎儿与宫内环境的相互作用以及新生儿与新的空中环境的相互作用,这提供了一种新的感官刺激,光。本综述的目的是通过从功能角度描述胎儿和新生儿的运动和感觉能力之间的关系以及它们与子宫内和子宫外的物体相互作用的日益复杂性,为能够揭示大脑发育过程的神经科学研究提供建议。
    The embodied approach argues that interaction with the environment plays a crucial role in brain development and that the presence of sensory effects generated by movements is fundamental. The movement of the fetus is initially random. Then, the repeated execution of the movement creates a link between it and its sensory effects, allowing the selection of movements that produce expected sensations. During fetal life, the brain develops from a transitory fetal circuit to the permanent cortical circuit, which completes development after birth. Accordingly, this process must concern the interaction of the fetus with the intrauterine environment and of the newborn with the new aerial environment, which provides a new sensory stimulation, light. The goal of the present review is to provide suggestions for neuroscientific research capable of shedding light on brain development process by describing from a functional point of view the relationship between the motor and sensory abilities of fetuses and newborns and the increasing complexity of their interaction with objects in the womb and outside of it.
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  • 文章类型: Journal Article
    目的:很少有研究使用热定量感官测试来评估在口腔中反复施用辣椒素凝胶的效果。本研究旨在研究反复施用辣椒素凝胶前后的热感觉和疼痛阈值。
    方法:10名健康女性(22±2岁)每天两次在牙龈粘膜上使用辣椒素凝胶,持续14天,和热痛阈值,热检测阈值,冷痛阈,并对口腔黏膜进行冷检测阈值评估。在14天之前和之后进行测量,并与对照样品进行比较(n=10,所有雌性,23±3年)。
    结果:辣椒素使上颌骨前部的热痛阈值增加2.9°C(95%CI:1.6-4.2)(p<0.001),下颌骨前部的热痛阈值增加2.2°C(95%CI:1.0-3.4)(p=0.001),类似于增加Δ1.1°C的温暖检测阈值(95%CI:0.3-1.9)(p=0.009)。在对照中未发现显著变化。
    结论:这些发现鼓励在口腔中使用热定量感觉测试来评估热感觉,这可能有助于评估旨在减轻疼痛的疗法的效果。
    OBJECTIVE: Few studies used thermal quantitative sensory testing to assess the effects of repeated capsaicin gel administration in the oral cavity. This study aimed to investigate thermal sensory and pain thresholds before and after repeated capsaicin gel administration.
    METHODS: Ten healthy females (22 ± 2 years) applied a capsaicin gel on the gingival mucosa twice daily for 14 days, and heat pain threshold, warm detection threshold, cold pain threshold, and cold detection threshold were assessed on the oral mucosa. Measurements were performed before and after the 14 days and were compared to a control sample (n = 10, all females, 23 ± 3 years).
    RESULTS: Capsaicin increased heat pain threshold in the anterior maxilla by 2.9°C (95% CI: 1.6-4.2) (p < 0.001) and in the anterior mandible by 2.2°C (95% CI: 1.0-3.4) (p = 0.001), similar to warm detection threshold that increased by Δ1.1°C (95% CI: 0.3-1.9) (p = 0.009). No significant changes were found in the controls.
    CONCLUSIONS: These findings encourage the use of thermal quantitative sensory testing in the oral cavity to assess thermal sensation, which might be useful for assessing the effects of therapies aimed at reducing pain.
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  • 文章类型: Journal Article
    本研究的目的是比较牦牛乳渣中蛋白质的结构和功能,从西藏的不同海拔(MRP1和MRP2)收集,以及它们提高脱脂酸奶质量的潜力。结果表明,MRP1表现出更高水平的β-折叠,浊度,颗粒大小,和凝胶特性。MRP2具有更好的灵活性,乳化,发泡,水/油吸收能力。MRP1(3%)的添加可以改善酸奶的质构和感官特性。虽然MRP2酸奶具有较高的硬度,发胶,咀嚼性和持水能力,口感不好。流变测试表明,MRPs酸奶表现出典型的凝胶状和剪切稀化行为。此外,用MRP1强化非脂酸奶可以形成更大的蛋白质簇,并形成更紧密的小孔网络。这些结果表明,MRP1可以作为脂肪替代品改善脱脂酸奶的质量。
    The purpose of this study was to compare the structural and functional of protein from yak milk residue, which collected from different elevations (MRP1 and MRP2) in Tibet, as well as their potential for enhancing the quality of non-fat yogurt. The results showed that MRP1 exhibited higher levels of β-sheet, turbidity, particle size, and gel properties. MRP2 had better flexibility, emulsification, foaming, water/oil absorption capacity. The addition of MRP1 (3%) could improve texture and sensory properties of yogurt. Although MRP2 yogurt had higher hardness, gumminess, chewiness and water holding capacity, poor mouthfeel. Rheological test showed that MRPs yogurt exhibited typical gel-like and shear-thinning behavior. Moreover, the fortification of non-fat yogurts with MRP1 brought the formation of larger protein clusters with a more tightly knit network of smaller pores. These results indicate that MRP1 can be used as a fat substitute to improve the quality of non-fat yogurt.
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