Young Adult

年轻的成年人
  • 文章类型: Journal Article
    背景:奥杜氏小孢子菌最近又开始流行。皮肤癣菌感染很难治疗,这就提出了一个问题,如果我们用最有效的抗真菌(AF)药物治疗奥杜氏支原体感染。
    目的:本研究的目的是调查丹麦头癣(TC)的暴发,应对疫情管理中的挑战,并对以前的疫情和最低抑制浓度(MIC)进行两次审查。
    方法:我们使用Wood\的光,文化,直接显微镜,和PCR筛选和抗真菌药敏试验(AFST)的治疗优化。我们进行了两次评论,以使用肉汤微量稀释法探索奥杜尼氏分枝杆菌的暴发和MIC值。
    结果:在接受筛选的73个人中,10人确认了奥杜尼氏杆菌感染。在4例(66%)中观察到对灰黄霉素的临床抗性。虽然以前的疫情显示出很高的灰黄霉素疗效,我们的研究支持特比萘芬,氟康唑和伊曲康唑在我们难以治疗的病例中。AFST指导了AF的选择。通过文献检索,我们发现了五起奥杜尼氏杆菌爆发,其中管理的差异包括使用伍德光和预防性局部房颤治疗。来自文献的特比萘芬MIC值范围为0.002至0.125mg/L。
    结论:使用Wood的光照和预防措施对限制感染很重要。文献缺乏灰黄霉素对奥杜尼尼的MIC数据,但表明对特比萘芬敏感。奥杜尼分枝杆菌治疗的临床疗效是矛盾的,有利于特比萘芬和灰黄霉素。AFST可以在疑难病例的治疗中发挥关键作用,但是缺乏AAST和MIC断点的标准化限制了其实用性。
    BACKGROUND: Microsporum audouinii has resurged recently. Infections with the dermatophyte are difficult to treat, which raises the question if we treat M. audouinii infections with the most effective antifungal (AF) agent.
    OBJECTIVE: The aims of this study was to investigate an outbreak of tinea capitis (TC) in Denmark, address the challenges in outbreak management and to conduct two reviews regarding previous outbreaks and minimal inhibitory concentration (MIC).
    METHODS: We used Wood\'s light, culture, direct microscopy, and PCR for screening and antifungal susceptibility testing (AFST) for treatment optimization. We performed two reviews to explore M. audouinii outbreaks and MIC values using broth microdilution method.
    RESULTS: Of 73 screened individuals, 10 had confirmed M. audouinii infections. Clinical resistance to griseofulvin was observed in 4 (66%) cases. While previous outbreaks showed high griseofulvin efficacy, our study favoured terbinafine, fluconazole and itraconazole in our hard-to-treat cases. AFST guided the choice of AF. Through the literature search, we identified five M. audouinii outbreaks, where differences in management included the use of Wood\'s light and prophylactic topical AF therapy. Terbinafine MIC values from the literature ranged from 0.002 to 0.125 mg/L.
    CONCLUSIONS: Use of Wood\'s light and preventive measurements were important for limiting infection. The literature lacked MIC data for griseofulvin against M. audouinii, but indicated sensitivity for terbinafine. The clinical efficacy for M. audouinii treatment was contradictory favouring both terbinafine and griseofulvin. AFST could have a key role in the treatment of difficult cases, but lack of standardisation of AFST and MIC breakpoints limits its usefulness.
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  • 文章类型: Journal Article
    目的:探讨光密度测定与圆锥角膜(KC)生物力学和形态学参数的相关性的临床意义,并验证光密度测定在KC中的诊断价值。
    方法:这项横断面研究包括295例KC患者的436只眼。角膜光密度测定法,测量形态学参数和生物力学参数。采用Spearman的相关分析来研究光密度与生物力学和形态学参数之间的关联。
    结果:前部(0-2mm和2-6mm)的光学密度测定,中央(0-2毫米),后(2-6mm)和总(2-6mm)层与SPA1呈正相关,而后层(0-2mm)呈负相关。前层2-6毫米的光学密度测定,6-10毫米,中央层6-10mm对AL1有负面影响,而后层0-2mm对AL1有正面影响。前部的光学密度测定,中央,和后层0-2毫米和2-6毫米积极影响形态参数K1F,K2F,KmF和K1B的绝对值,K2B,KmB.中心(0-2mm)和后部(2-6mm)层的光学密度测定对TCT产生负面影响。光学前(0-2毫米和2-6毫米)的密度测定,中心(0-2毫米),后(2-6毫米)和总(2-6毫米)层与ACE和PCE呈正相关,而后层(0-2mm)呈负相关。
    结论:光密度测定与圆锥角膜的生物力学和形态学参数相关,提示其作为评估圆锥角膜进展和治疗效果的诊断指标的潜力。
    OBJECTIVE: To investigate the clinical significance of the correlation between optical densitometry and both biomechanical and morphological parameters in keratoconus (KC) and to verify the diagnostic value of optical densitometry in KC.
    METHODS: This cross-sectional study included 436 eyes of 295 patients with KC. Corneal optical densitometry, morphological parameters and biomechanical parameters were measured. Spearman\'s correlation analysis was employed to investigate the association between optical densitometry and both biomechanical and morphological parameters.
    RESULTS: Optical densitometry of the anterior (0-2 mm and 2-6 mm), central (0-2 mm), posterior (2-6 mm) and total (2-6 mm) layers correlated positively with SPA1, while the posterior layer (0-2 mm) correlated negatively. Optical densitometry of the anterior layers 2-6 mm, 6-10 mm, and the central layer 6-10 mm negatively affected AL1, while the posterior layer 0-2 mm positively affected it. Optical densitometry of the anterior, central, and posterior layers 0-2 mm and 2-6 mm positively influenced the morphological parameters K1F, K2F, KmF and the absolute values of K1B, K2B, KmB. Optical densitometry of the center (0-2 mm) and posterior (2-6 mm) layers negatively influenced TCT. Optical densitometry of the anterior (0-2 mm and 2-6 mm), center (0-2 mm), posterior (2-6 mm) and total (2-6 mm) layers correlated positively with ACE and PCE, whereas the posterior layer (0-2 mm) correlated negatively.
    CONCLUSIONS: Optical densitometry was correlated with biomechanical and morphological parameters in keratoconus, suggesting its potential as a diagnostic indicator for assessing keratoconus progression and treatment efficacy.
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  • 文章类型: Journal Article
    人类可以使用先验信息来优化他们的触觉探索行为。这里,我们调查了视觉先验的用法,哪些机制允许它们的使用,以及使用情况如何受到信息质量的影响。参与者探索了不同的光栅纹理并区分了它们的空间频率。每次试验都给出了纹理方向的视觉先验,质量随机变化,从高到无信息价值。与纹理方向正交的初始探索运动方向的调整用作先前使用的指标。参与者确实使用了视觉先验;先验质量越高(实验1)。更高的任务需求并没有增加视觉先验的直接使用(实验2),但可能促进了调整行为的建立。在实验3中,我们降低了会议期间呈现的高质量先验的比例,从而减少高质量先验和触觉信息之间的偶然性。因此,即使是高质量的前科也不再唤起运动调整。我们得出的结论是,调整行为的建立是由相当内隐的偶然性学习引起的。总的来说,很明显,人类可以自主学习使用相当抽象的视觉先验来优化触觉探索,学习过程和直接用法在很大程度上取决于先验质量。
    Humans can use prior information to optimize their haptic exploratory behavior. Here, we investigated the usage of visual priors, which mechanisms enable their usage, and how the usage is affected by information quality. Participants explored different grating textures and discriminated their spatial frequency. Visual priors on texture orientation were given each trial, with qualities randomly varying from high to no informational value. Adjustments of initial exploratory movement direction orthogonal to the textures\' orientation served as an indicator of prior usage. Participants indeed used visual priors; the more so the higher the priors\' quality (Experiment 1). Higher task demands did not increase the direct usage of visual priors (Experiment 2), but possibly fostered the establishment of adjustment behavior. In Experiment 3, we decreased the proportion of high-quality priors presented during the session, hereby reducing the contingency between high-quality priors and haptic information. In consequence, even priors of high quality ceased to evoke movement adjustments. We conclude that the establishment of adjustment behavior results from a rather implicit contingency learning. Overall, it became evident that humans can autonomously learn to use rather abstract visual priors to optimize haptic exploration, with the learning process and direct usage substantially depending on the priors\' quality.
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  • 文章类型: Journal Article
    引言下颌第三磨牙可以无症状或引起一些病变,如远端龋齿和牙源性囊肿和肿瘤。这项研究调查了下颌第二磨牙邻近近中角或水平部分萌出的下颌第三磨牙的远端龋齿的患病率及其与腐烂的关系,缺失和填充牙齿(DMFT)风险组,年龄,侧面(左右)和性别。方法该研究包括预约了近角或水平定位并部分萌出下颌第三磨牙手术的患者。手术前,DMFT得分,年龄,记录性别和侧面。提取后,对第二磨牙的远端龋齿进行了临床检查。远端龋的患病率和DMFT风险组之间的相关性,年龄,性别和侧面进行了确定。结果本研究共对514例患者进行,共639颗牙齿。中危或高危人群中的男性和患者明显容易发生第二磨牙远端龋齿。关于年龄组,没有统计学上的显著关系,侧面和位置。结论性别和DMFT风险组会影响邻近近中角或水平部分萌出的第三磨牙的第二磨牙远端龋的患病率。在中度或高危人群中的男性和患者中应考虑预防性提取。
    Introduction Impacted mandibular third molars can be asymptomatic or cause some pathologies, such as distal caries and odontogenic cysts and tumours. This study investigates the prevalence of distal caries of the mandibular second molar adjacent to the mesioangular or horizontally partially erupted mandibular third molar and its relationship regarding decayed, missing and filled teeth (DMFT) risk group, age, side (left-right) and sex.Methods The study included patients who had an appointment for mesioangular or horizontally positioned and partially erupted mandibular third molar surgery. Before the surgery, the DMFT score, age, sex and side were recorded. After extraction, the second molar was clinically examined for distal caries. The prevalence of distal caries and the correlation between the DMFT risk group, age, sex and side were determined.Results The study was conducted on 514 patients and involved 639 teeth. Men and patients in the moderate- or high-risk group are significantly prone to developing distal caries of the second molar. No statistically significant relationship exists regarding age group, side and position.Conclusion Sex and DMFT risk groups affect the prevalence of distal caries in second molars adjacent to the mesioangular or horizontally partially erupted third molars. The prophylactic extraction should be considered in men and patients in the moderate- or high-risk group.
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  • 文章类型: Journal Article
    早产(PTB)婴儿面临与氧化应激相关的损伤的风险。我们调查了PTB男性年轻人及其在休息和运动中的足月出生的同伴中抗氧化剂和神经发育基因多态性与氧化应激参数之间的关系。健康的年轻PTB(N=22)和足月(N=15)男性在常压常氧(FiO2=0.21)和低氧(FiO2=0.13)条件下进行了分级运动测试。CATrs1001179与整个组和PTB个体中亚硝酸盐的减少有关(分别为P=0.017和P=0.043)。GPX1rs1050450与全组和足月个体中三价铁还原抗氧化能力的降低有关(分别为P=0.017和P=0.021)。HIF1Ars11549465与硝基酪氨酸的减少和丙二醛的增加有关(分别为P=0.022和P=0.018)。NOTCH4rs367398与低氧时高级氧化蛋白产物和亚硝酸盐的增加有关(分别为P=0.002和P=0.004)。在常氧症中,NOTCH4rs367398与全组丙二醛升高有关(P=0.043)。在全组和PTB个体中,BDNFrs6265与亚硝酸盐/硝酸盐的减少相关(分别为P=0.009和P=0.043)。所研究基因和PTB的多态性可能会影响在正常氧或低氧条件下运动后的氧化应激反应,远远超出了年轻男性的新生儿期。
    Preterm born (PTB) infants are at risk for injuries related to oxidative stress. We investigated the association between antioxidant and neurodevelopmental gene polymorphisms and oxidative stress parameters in PTB male young adults and their term-born counterparts at rest and during exercise. Healthy young PTB (N = 22) and full-term (N = 15) males underwent graded exercise tests in normobaric normoxic (FiO2 = 0.21) and hypoxic (FiO2 = 0.13) conditions. CAT rs1001179 was associated with decrease in nitrites in the whole group and in PTB individuals (P = 0.017 and P = 0.043, respectively). GPX1 rs1050450 was associated with decrease in ferric reducing antioxidant power in the whole group and in full-term individuals (P = 0.017 and P = 0.021, respectively). HIF1A rs11549465 was associated with decrease in nitrotyrosine and increase in malondialdehyde (P = 0.022 and P = 0.018, respectively). NOTCH4 rs367398 was associated with increase in advanced oxidation protein products and nitrites (P = 0.002 and P = 0.004, respectively) in hypoxia. In normoxia, NOTCH4 rs367398 was associated with increase in malondialdehyde in the whole group (P = 0.043). BDNF rs6265 was associated with decreased nitrites/nitrates in the whole group and in PTB individuals (P = 0.009 and P = 0.043, respectively). Polymorphisms in investigated genes and PTB might influence oxidative stress response after exercise in normoxic or hypoxic conditions far beyond the neonatal period in young male adults.
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  • 文章类型: Journal Article
    运动经验对锻炼习惯的养成起着举足轻重的作用,具有增强认知表现的相互促进的关系。公认的由运动驱动的认知可塑性需要进行全面的检查。因此,这项研究深入研究了前额叶皮层的动态复杂性,探索定向运动经验对认知表现的影响。我们的发现提供了有关特定大脑区域的功能激活的经验证据,从而弥合了经验因素与认知能力之间的联系。在这项横断面研究中,纳入了一个由49名运动员组成的队列,在不同的非专业场景中,仔细研究了不同经验水平的定向越野运动员的行为差异和前额叶皮质动力学.这些研究涉及利用功能近红外光谱(fNIRS)来检测氧合血红蛋白(HbO2)的变化。经验丰富的专家组表现出神经效率,表现出背外侧前额叶的大脑激活显着减少,左腹外侧前额叶,与低经验组相比,右眶额叶区域。在低经验的新手群体中,与心理旋转任务相比,空间记忆任务表现优异,与高经验组相比,在所有条件下的反应时间始终较低。值得注意的是,与低经验新手组相比,高经验专家组的脑血氧合激活显着降低,与任务类型无关。背外侧前额叶在任务开始时表现出激活,不管经验水平如何。空间记忆任务中的正确率始终高于心理旋转任务中的正确率,而在心理旋转任务中,大脑区域的激活明显大于空间记忆任务。“这项研究阐明了经验丰富的专家和新手之间前额叶皮层动力学的差异,在经验丰富的人群中展示认知优势,在缺乏经验的人群中展示空间记忆优势。我们的发现有助于理解作为观察到的认知优势基础的神经机制,并提供对空间认知任务中定向运动经验动员的前脑资源的见解。\"
    Sporting experience plays a pivotal role in shaping exercise habits, with a mutually reinforcing relationship that enhances cognitive performance. The acknowledged plasticity of cognition driven by sports necessitates a comprehensive examination. Hence, this study delves into the dynamic intricacies of the prefrontal cortex, exploring the impact of orienteering experience on cognitive performance. Our findings contribute empirical evidence regarding the functional activation of specific brain regions bridging the nexus between experiential factors and cognitive capabilities. In this cross-sectional study, a cohort of forty-nine athletes was enrolled to meticulously examine behavioral variances and prefrontal cortex dynamics among orienteering athletes of varying experience levels across diverse non-specialized scenarios. These investigations involved the utilization of functional near-infrared spectroscopy (fNIRS) to detect alterations in oxygenated hemoglobin (HbO2). The high-experience expert group exhibited neurological efficiency, demonstrating significantly diminished brain activation in the dorsolateral prefrontal, left ventral lateral prefrontal, and right orbitofrontal regions compared to the low-experience group. Within the low-experience novice group, superior performance in the spatial memory task was observed compared to the mental rotation task, with consistently lower reaction times across all conditions compared to the high-experience group. Notably, cerebral blood oxygenation activation exhibited a significant reduction in the high-experience expert group compared to the low-experience novice group, irrespective of task type. The dorsolateral prefrontal lobe exhibited activation upon task onset, irrespective of experience level. Correct rates in the spatial memory task were consistently higher than those in the mental rotation task, while brain region activation was significantly greater during the mental rotation task than the spatial memory task.\" This study elucidates disparities in prefrontal cortex dynamics between highly seasoned experts and neophyte novices, showcasing a cognitive edge within the highly experienced cohort and a spatial memory advantage in the inexperienced group. Our findings contribute to the comprehension of the neural mechanisms that underlie the observed cognitive advantage and provide insights into the forebrain resources mobilized by orienteering experience during spatial cognitive tasks.\"
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  • 文章类型: Journal Article
    元认知偏见反复与“焦虑抑郁”和“强迫性和侵入性思维”的诊断性精神病学维度相关,横截面。为了提高我们对潜在神经认知机制的理解,需要新的方法来远程测量元认知,个人随着时间的推移。我们开发了一个游戏化的智能手机任务,旨在测量视觉感知元认知(信心)偏差,并在两项研究中调查了其心理测量特性(N=3410无薪公民科学家,N=52名付费参与者)。我们评估了收敛有效性,半分割和重测可靠性,并确定了捕获其临床相关性所需的最小试验数量。元认知偏倚的收敛效度是中等的(r(50)=0.64,p<0.001),并且表现出出色的分半信度(r(50)=0.91,p<0.001)。焦虑抑郁与信心下降相关(β=-0.23,SE=0.02,p<0.001),而强迫性和侵入性思维与更高的置信度相关(β=0.07,SE=0.02,p<0.001)。仅在40项试验中,就可以明显看出元认知偏见与诊断性精神病学维度之间的关联。决策中的元认知偏差在会话内和会话之间是稳定的,对于100个试验(ICC=0.86,N=110)和40个试验(ICC=0.86,N=120)版本的MetaMind,表现出非常高的重测可靠性。混合“自我报告认知”任务可能是弥合最近讨论的计算精神病学可靠性差距的一种方法。
    Metacognitive biases have been repeatedly associated with transdiagnostic psychiatric dimensions of \'anxious-depression\' and \'compulsivity and intrusive thought\', cross-sectionally. To progress our understanding of the underlying neurocognitive mechanisms, new methods are required to measure metacognition remotely, within individuals over time. We developed a gamified smartphone task designed to measure visuo-perceptual metacognitive (confidence) bias and investigated its psychometric properties across two studies (N = 3410 unpaid citizen scientists, N = 52 paid participants). We assessed convergent validity, split-half and test-retest reliability, and identified the minimum number of trials required to capture its clinical correlates. Convergent validity of metacognitive bias was moderate (r(50) = 0.64, p < 0.001) and it demonstrated excellent split-half reliability (r(50) = 0.91, p < 0.001). Anxious-depression was associated with decreased confidence (β =  - 0.23, SE = 0.02, p < 0.001), while compulsivity and intrusive thought was associated with greater confidence (β = 0.07, SE = 0.02, p < 0.001). The associations between metacognitive biases and transdiagnostic psychiatry dimensions are evident in as few as 40 trials. Metacognitive biases in decision-making are stable within and across sessions, exhibiting very high test-retest reliability for the 100-trial (ICC = 0.86, N = 110) and 40-trial (ICC = 0.86, N = 120) versions of Meta Mind. Hybrid \'self-report cognition\' tasks may be one way to bridge the recently discussed reliability gap in computational psychiatry.
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  • 文章类型: Journal Article
    惩教工作者(CW)报告高水平的工作压力源,频繁暴露于潜在的心理创伤事件(PPTEs),以及重大的心理健康挑战。有证据表明睡眠障碍和各种心理健康挑战之间存在关联,包括公共安全人员的初步证据;然而,重复和扩展将更好地为支持心理健康的干预措施提供信息.当前的研究旨在检查睡眠质量之间的关系,工作压力,和心理健康障碍在安大略省的一个省级惩教署工作的不同的CW样本中,加拿大。对943名参与横断面调查的CW进行了数据分析,基于网络的安大略省惩教工作者心理健康和福祉研究于2017年12月至2018年6月进行。睡眠质量指标包括失眠症状,工作晚上和非轮班晚上每晚的总睡眠时间,每周感觉休息的天数,和整体睡眠质量。描述性统计,方差分析,相关分析,和逻辑回归用于检查睡眠质量之间的关系,轮班工作的压力,和精神健康障碍的症状。CW在工作时平均每晚睡眠6.0小时,在非轮班的夜晚平均睡眠7.2小时。CW报告说,醒来的感觉平均每周休息2.6天,并将他们的整体睡眠质量评定为较差的范围。许多CW(64.9%)筛查出失眠的临床显著症状阳性。职业群体之间也存在差异,因此担任惩教人员的CW报告的睡眠问题最多。失眠与心理健康障碍症状之间存在统计学上的显着关系。轮班工作的压力水平越高,睡眠质量越差。CWs,尤其是那些在省级监狱担任惩教人员的人,报告了许多与睡眠质量较差一致的指标。睡眠质量差也与工作压力和心理健康障碍有关。
    Correctional workers (CWs) report high levels of work stressors, frequent exposures to potentially psychologically traumatic events (PPTEs), and substantial mental health challenges. There is evidence of associations between sleep disturbances and diverse mental health challenges, including preliminary evidence from public safety personnel; however, replications and extensions would better inform interventions to support mental health. The current study was designed to examine associations between quality of sleep, work stress, and mental health disorders in a sample of diverse CWs employed in a provincial correctional service in Ontario, Canada. Data were analyzed from 943 CWs who participated in the cross-sectional, web-based Ontario Provincial Correctional Worker Mental Health and Well-Being Study conducted from December 2017 to June 2018. Sleep quality indicators included symptoms of insomnia, total hours of sleep per night on work nights and off-shift nights, number of days feeling rested per week, and overall sleep quality. Descriptive statistics, analyses of variance, correlational analyses, and logistic regression were used to examine relationships among sleep quality, stress of shift work, and mental health disorder symptoms. CWs slept an average of 6.0 h per night when working and 7.2 h during off-shift nights. CWs reported waking up feeling rested an average of 2.6 days per week and rated their overall quality of sleep in the fair to poor range. Many CWs (64.9%) screened positive for clinically significant symptoms of insomnia. There were also differences across occupational groups such that CWs working as correctional officers reported the most sleep problems. There were statistically significant relationships between insomnia and mental health disorder symptoms. Higher levels of stress from shift work were associated with worse sleep quality. CWs, especially those working as correctional officers in a provincial prison, reported many indicators consistent with poorer quality of sleep. Poor quality of sleep was also associated with work stress and mental health disorders.
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  • 文章类型: Journal Article
    当人类视觉跨越220°时,传统的功能性MRI设置仅显示中心10-15°的图像。因此,大脑如何代表整个视野中感知的场景仍然未知。这里,我们介绍了一种用于沉浸式场景表示的超广角显示和探针签名的方法。通过将投射的图像从角度镜弹跳到定制的弯曲屏幕上来实现175°的无障碍视图。为了避免知觉失真,场景是通过自定义虚拟环境中的宽视场创建的。我们发现身临其境的场景表示驱动具有远周边偏好的内侧皮层,但在经典场景区域显示最小的调制。Further,即使在极端的远外围刺激下,场景和面部选择区域也能保持其内容偏好,强调并不是所有的远外围信息都会自动集成到场景区域计算中。这项工作提供了关于内容与内容的澄清证据。场景表示中的外围偏好,并为研究沉浸式视觉开辟了新途径。
    While human vision spans 220°, traditional functional MRI setups display images only up to central 10-15°. Thus, it remains unknown how the brain represents a scene perceived across the full visual field. Here, we introduce a method for ultra-wide angle display and probe signatures of immersive scene representation. An unobstructed view of 175° is achieved by bouncing the projected image off angled-mirrors onto a custom-built curved screen. To avoid perceptual distortion, scenes are created with wide field-of-view from custom virtual environments. We find that immersive scene representation drives medial cortex with far-peripheral preferences, but shows minimal modulation in classic scene regions. Further, scene and face-selective regions maintain their content preferences even with extreme far-periphery stimulation, highlighting that not all far-peripheral information is automatically integrated into scene regions computations. This work provides clarifying evidence on content vs. peripheral preferences in scene representation and opens new avenues to research immersive vision.
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  • 文章类型: Journal Article
    相对于年轻成年人,老年人(OAs)在形成感知选择方面通常较慢和/或较不准确。尽管存在感知缺陷,OAs从跨感官整合信息中获益,产生多感官益处。然而,这些看似不同的衰老效应背后的认知过程仍不清楚。为了解决这个知识差距,212名参与者(18-90岁)进行了在线对象分类范式,因此,与年龄相关的反应时间(RT)和视听(AV)之间的选择准确性差异,视觉(V),和听觉(A)条件可以评估。而OAs在感官条件下更慢,准确度也更低,它们在AV和V条件之间表现出更大的RT下降,对决策速度表现出更大的多感官益处。分层漂移扩散模型(HDDM)适用于参与者的行为,以探索与年龄相关的对潜在多感官决策形成过程的影响。对于OAs,HDDM在感觉条件下表现出较慢的证据积累率,同时对难度较高的AV试验的反应谨慎性增加。值得注意的是,对于难度较低的试验,我们发现了随着年龄增长而增加的证据积累中的多感官益处,但不是为了更高难度的试验,相反,增加的反应谨慎是明显的。一起,我们的发现调和了与年龄相关的多感官决策的影响,表明随着年龄增加决定速度的增加,多感官证据积累的益处更大。
    Older adults (OAs) are typically slower and/or less accurate in forming perceptual choices relative to younger adults. Despite perceptual deficits, OAs gain from integrating information across senses, yielding multisensory benefits. However, the cognitive processes underlying these seemingly discrepant ageing effects remain unclear. To address this knowledge gap, 212 participants (18-90 years old) performed an online object categorisation paradigm, whereby age-related differences in Reaction Times (RTs) and choice accuracy between audiovisual (AV), visual (V), and auditory (A) conditions could be assessed. Whereas OAs were slower and less accurate across sensory conditions, they exhibited greater RT decreases between AV and V conditions, showing a larger multisensory benefit towards decisional speed. Hierarchical Drift Diffusion Modelling (HDDM) was fitted to participants\' behaviour to probe age-related impacts on the latent multisensory decision formation processes. For OAs, HDDM demonstrated slower evidence accumulation rates across sensory conditions coupled with increased response caution for AV trials of higher difficulty. Notably, for trials of lower difficulty we found multisensory benefits in evidence accumulation that increased with age, but not for trials of higher difficulty, in which increased response caution was instead evident. Together, our findings reconcile age-related impacts on multisensory decision-making, indicating greater multisensory evidence accumulation benefits with age underlying enhanced decisional speed.
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