Effects of Multisensory Training in Perceptual Learning

1981 ◽  
Vol 4 (1) ◽  
pp. 38-43 ◽  
Author(s):  
Jed P. Luchow ◽  
Margaret Jo Shepherd
Keyword(s):  
Learning Disabled ◽  
Learning Performance ◽  
Matching Task ◽  
Perceptual Task ◽  
Treatment Groups ◽  
Tactile Input ◽  
Multisensory Training ◽  
Visual Matching ◽  
The Difference ◽  
Multisensory Input

The purpose of this study was to examine the effect of multisensory input on the performance of learning disabled boys on a visual matching task. A thirty-item multiple-choice visual dot pattern matching task was given to 160 boys, ages 6 years through 8 years, 11 months, who were enrolled in special classes for children with learning problems. Of the four treatment groups (visual input only, visual plus tactile input, visual plus auditory input, visual plus auditory plus tactile input), the difference between the means of the visual only and visual-auditory and visual-auditory-tactile groups was significant at p<.05. The results suggest that on a perceptual task not related to reading or mathematics, the addition of input from tactile and auditory sensory modalities does not improve learning performance and, in certain combinations, actually interferes with such performance.

Effects of an Antihypertensive Combination in Japanese Hypertensive Outpatients Based on the Long-Acting Calcium Channel Blocker Benidipine on Vascular and Renal Events: A Sub-Analysis of the COPE Trial

2020 ◽  
Vol 16 ◽  
Author(s):  
Seiji Umemoto ◽  
Toshio Ogihara ◽  
Masunori Matsuzaki ◽  
Hiromi Rakugi ◽  
Kazuyuki Shimada ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Calcium Channel ◽  
Calcium Channel Blocker ◽  
Channel Blocker ◽  
Rank Test ◽  
Vascular Events ◽  
Treatment Groups ◽  
Β Blocker ◽  
The Difference ◽  
Long Acting

Background: In the trial known as COPE (Combination Therapy of Hypertension to Prevent Cardiovascular Events) three benidipine (a calcium channel blocker; CCB) regimens were compared. Hypertensive Japanese outpatients aged 40–85 years (n=3,293) who did not achieve the target blood pressure of <140/90 mmHg with benidipine 4 mg/day were treated with the diuretic thiazide (n=1,094) or a β-blocker (n=1,089) or an additional angiotensin receptor blocker (ARB; n=1,110). A significantly higher incidence of hard cardiovascular composite endpoints and of fatal or non-fatal strokes was observed in the benidipine-β-blocker group compared to the benidipine-thiazide group. Objective and Methods: We further evaluated the treatment effects of the three benidipine-based regimens on vascular and renal events in a sub-analysis of the COPE patients. Results: A total of 10 vascular events (0.8 per 1,000 person-years) including one aortic dissection (0.1 per 1,000 person-years) and nine cases of peripheral artery disease (0.8 per 1,000 person-years) were documented, as was a total of seven renal events (0.6 per 1,000 person-years). No significant differences in vascular and renal events were revealed among the three treatment groups: vascular events p=0.92 renal events p=0.16 log-rank test. Conclusions: Blood pressure-lowering therapy with benidipine combined with an ARB, β-blocker, or thiazide was similarly effective in the prevention of vascular and renal events in hypertensive outpatients, although there is no enough these events to compare the difference in the three treatment groups.

scholarly journals The foggy effect of egocentric distance in a nonverbal paradigm

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Bo Dong ◽  
Airui Chen ◽  
Yuting Zhang ◽  
Yangyang Zhang ◽  
Ming Zhang ◽  
...  
Keyword(s):  
Distance Perception ◽  
Matching Task ◽  
Egocentric Distance ◽  
Accident Rate ◽  
Estimation Task ◽  
Distance Range ◽  
Verbal Estimation ◽  
Vista Space ◽  
Visual Matching ◽  
Speed Perception

AbstractInaccurate egocentric distance and speed perception are two main explanations for the high accident rate associated with driving in foggy weather. The effect of foggy weather on speed has been well studied. However, its effect on egocentric distance perception is poorly understood. The paradigm for measuring perceived egocentric distance in previous studies was verbal estimation instead of a nonverbal paradigm. In the current research, a nonverbal paradigm, the visual matching task, was used. Our results from the nonverbal task revealed a robust foggy effect on egocentric distance. Observers overestimated the egocentric distance in foggy weather compared to in clear weather. The higher the concentration of fog, the more serious the overestimation. This effect of fog on egocentric distance was not limited to a certain distance range but was maintained in action space and vista space. Our findings confirm the foggy effect with a nonverbal paradigm and reveal that people may perceive egocentric distance more "accurately" in foggy weather than when it is measured with a verbal estimation task.

The Efficacy of Concurrent or Sequential Intravenous and Intratympanic Steroid for Idiopathic Sudden Sensorineural Hearing Loss

2018 ◽  
Vol 23 (5) ◽  
pp. 277-284 ◽  
Author(s):  
Chia-Huei Chu ◽  
Shiau-Ru Chiou ◽  
Mao-Che Wang ◽  
An-Suey Shiao ◽  
Tzong-Yang Tu ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Sequential Therapy ◽  
Sudden Sensorineural Hearing Loss ◽  
Sensorineural Hearing ◽  
Concurrent Treatment ◽  
Treatment Groups ◽  
Sequential Group ◽  
The Difference ◽  
Hearing Outcomes

Objective: The purpose of this retrospective study was to investigate the difference in treatment outcomes for patients with idiopathic sudden sensorineural hearing loss (SSNHL) undergoing concurrent or sequential intravenous (IV) and intratympanic (IT) steroid therapies. Methods: Patients with idiopathic SSNHL admitted to Taipei Veterans Hospital from August 2011 to August 2012 were enrolled. Patients were treated with both IV dexamethasone 5 mg b.i.d. for 5 days, then tapered over 6 days, and IT injections of dexamethasone 5 mg daily. The administration of IV and IT steroids was given either concurrently or sequentially (IV steroid was administered from days 1–5 followed by IT steroid treatment starting on day 4 or day 5). The hearing outcomes of the concurrent and sequential groups were analyzed. Results: Overall, after ≥2 months following treatment, across frequencies ranging from 250 to 8,000 Hz and pure-tone average (PTA) assessments, hearing improvements were similar between treatment groups, except at the frequencies of 4,000 and 8,000 Hz where the concurrent treatment group had greater hearing gain than the sequential group (4,000 Hz: 30.68 ± 28.96 vs. 14.52 ± 24.06 dB, respectively, p = 0.042; 8,000 Hz: 22.62 ± 23.59 vs. 7.67 ± 21 dB, p = 0.030). Across frequencies and PTA assessments, a similar percentage of patients had ≥20-dB gains in hearing compared with patients treated sequentially, except at 8,000 Hz where a greater percentage of patients in the concurrent group (57.1%) than the sequential group (23.3%) (p = 0.014) had ≥20-dB hearing gains. Conclusion: The findings suggest that both concurrent and sequential treatment improve hearing in patients with idiopathic SSNHL, and that concurrent treatment may show greater benefit than sequential therapy, particularly at high frequencies.

scholarly journals Proprioception is subject-specific and improved without performance feedback

2019 ◽  
Author(s):  
Tianhe Wang ◽  
Ziyan Zhu ◽  
Inoue Kana ◽  
Yuanzheng Yu ◽  
Hao He ◽  
...  
Keyword(s):  
Performance Feedback ◽  
Motor Performance ◽  
Good Accuracy ◽  
Separate Experiment ◽  
Matching Task ◽  
Average Error ◽  
Hand Position ◽  
Neural Network Classifier ◽  
Subject Specific ◽  
Visual Matching

AbstractAccumulating evidence indicates that the human’s proprioception map appears subject-specific. However, whether the idiosyncratic pattern persists across time with good within-subject consistency has not been quantitatively examined. Here we measured the proprioception by a hand visual-matching task in multiple sessions over two days. We found that people improved their proprioception when tested repetitively without performance feedback. Importantly, despite the reduction of average error, the spatial pattern of proprioception errors remained idiosyncratic. Based on individuals’ proprioceptive performance, a standard convolutional neural network classifier could identify people with good accuracy. We also found that subjects’ baseline proprioceptive performance could not predict their motor performance in a visual trajectory-matching task even though both tasks require accurate mapping of hand position to visual targets in the same workspace. Using a separate experiment, we not only replicated these findings but also ruled out the possibility that performance feedback during a few familiarization trials caused the observed improvement in proprioception. We conclude that the conventional proprioception test itself, even without feedback, can improve proprioception but leave the idiosyncrasy of proprioception unchanged.

scholarly journals The Effect of Aloe Vera Extract to Extensive Lesion and Expression of Transforming Growth Factor (TGF-β) on Alkaline Chemical Trauma Cornea Model

2018 ◽  
Vol 1 (2) ◽  
pp. 1-17
Author(s):  
Fahcreza ◽  
Elsa Iskandar ◽  
Rachmat Hidayat ◽  
Petty Purwanita ◽  
Anang Tribowo ◽  
...  
Keyword(s):  
Wound Healing ◽  
Growth Factor ◽  
Wistar Rats ◽  
Aloe Vera ◽  
Control Group ◽  
Treatment Groups ◽  
White Rats ◽  
Significant Difference ◽  
The Difference ◽  
In Cells

Abstract Background: Chemical trauma to the cornea is an emergency condition of the eye that requires early diagnosis and good treatment. Alkaline have ability to saponify fatty acids in cells and cell membranes which can make penetration into the stroma and destroy proteoglycans and collagen in cells. Aloe vera (AV) contains several active substances that are reported to have anti-inflammatory, immunomodulatory, and wound healing effects. AV has been reported to accelerate the healing process of corneal epithelial defects by increasing fibroblast proliferation, collagen production and growth factor production. This study aims to determine the difference between the effect of aloe vera extract with a concentration of 10%, 20%, 40% and BSS on the healing of extensive corneal lesions in white wistar rats alkaline trauma models. Method: This study was an experimental study with a pre and posttest only with control group design in vivo approach to 30 Wistar white rats which were divided into 5 treatment groups for 3 days. Comparative analysis of effectiveness using the ANNOVA test or the Kruskal Wallis test and continued by the post hoc test. Results: Based on the one way ANOVA test there was a statistically significant difference in effectiveness between the five treatment groups on the percentage of corneal wound healing area and TGF-β expression with an assessment of p = 0,000 each. The administration of alloevera (AV) concentration of 20% had a significant difference in percentage of healing of corneal lesions and TGF-β expression compared with other treatment groups with p = 0,000 each. Large differences in the area of corneal lesions in the 40% AV group were -0.45 in the BBS group, 0.146 in the 10% AV group, 0.493 in the 20% AV group. The difference in the AV group 10% was 0.30 in the BBS group, -064 in the AV group 20%, and -0.14 in the AV group 40%. However, TGFβ expression in the normal control group that did not receive treatment was 54.94 (53.21-56-12). TGFβ levels in the BSS group were 10.44, the 10% aloe vera group was 25.43, 47.99 for the 20% aloe vera group and 37.95 for the 40% aloe vera group. Conclusion: There is a difference between the effect of aloe vera extract with concentrations of 10%, 20%, 40% and BSS on the extensive healing of corneal lesions in white wistar rats with alkaline chemical trauma models.

The Impact of Instructor Twitter Use on Course Performance Indicators

2018 ◽  
pp. 222-236
Author(s):  
Eric M. Fife ◽  
C. Leigh Nelson ◽  
Theresa B. Clarke
Keyword(s):  
Higher Education ◽  
Performance Indicators ◽  
Classroom Community ◽  
Learning Performance ◽  
Perceived Learning ◽  
College Level ◽  
Course Performance ◽  
Course Effectiveness ◽  
The Difference ◽  
The Impact

An exploratory quasi-experiment of college-level students was used to examine the difference in a variety of course indicators among instructors when they did not use Twitter as a supplement to their courses, when they moderately used Twitter, and when they used Twitter a great deal in their courses. When instructors used Twitter in their classes, perceived learning via technological mediums, perceived classroom community with regard to technological media, perceived pedagogical affect, perceived course effectiveness, perceived learning performance, and perceived perception of learning from Twitter were all greater than when they did not use Twitter in their courses. Overall results of this study recommend further research and a continued focus on the usage of Twitter in the higher education classroom.

Recovery of function in dorsal horn following partial deafferentation

1980 ◽  
Vol 43 (1) ◽  
pp. 102-117 ◽  
Author(s):  
L. M. Pubols ◽  
M. E. Goldberger
Keyword(s):  
Dorsal Horn ◽  
Recovery Of Function ◽  
Receptive Fields ◽  
Body Region ◽  
Partial Recovery ◽  
Collateral Sprouting ◽  
Somatotopic Organization ◽  
Tactile Input ◽  
Spinal Cord Segment ◽  
The Difference

1. Collateral sprouting of L6 dorsal root afferents within the dorsal horn of the L6 spinal cord segment has been shown anatomically to occur following transection of all other lumbosacral dorsal roots in the cat. The present study was performed to examine a possible physiological correlate of that sprouting, namely, an altered somatotopic organization of the dorsal horn at L6. This was evaluated by microelectrode mapping of the L6 dorsal horn in normal cats and in cats with L6 spared, lumbosacral dorsal rhizotomies performed 2 days (subacute spared root) or more than 8 wk (chronic spared root), prior to recording. 2. In normal cats the mediolateral somatotopic sequence of hindlimb representation in the L6 dorsal horn is ventral digits 2 and 3, dorsal digits 2 and 3, dorsal foot, rostral and lateral ankle, lateral leg, lateral thigh, and back. In both subacute and chronic spared-root cats the somatotopic sequence is similar to that of normal cats, but there is a loss of proximal thigh and back representation. This proximal body region is represented at the lateral edge of the dorsal horn in normal animals. 3. There was a partial loss of responsiveness of cells in the dorsal horn in the subacute spared-root group and a partial recovery of responsiveness in the chronic group. In the subacute group punctures exhibiting no responses to tactile input tended to be clustered in the lateral dorsal horn. 4. The lateral one-fourth of the dorsal horn in each animal was analyzed in terms of the percentage of recording loci occurring within it. The percentages of recording loci having receptive fields proximal to, distal to, and spanning the middle of the thigh (proximal, distal, and intermediate RFs) were tabulated for each animal. Subacute animals had a significantly lower-than-normal overall percentage of responsive loci in the lateral dorsal horn, but chronic animals did not. The percentage of distal fields therein was not different for the normal versus the subacute group, signifying that the loss of proximal and intermediate fields was responsible for the difference in overall percentage. Chronic animals, however, had significantly more distal fields than did normals. When all fields having any distal component were compared (i.e., distal and intermediate), the difference between the chronic and normal groups did not reach significance. One possible explanation of these findings is that loci having both proximal and distal RF components are unresponsive 2 days after partial denervation, but recover responsiveness to their spared distal input over an 8-wk period. One possible mechanism mediating these changes is localized sprouting of intact, spared axons. Other mechanisms of functional recovery, such as interneuronal sprouting, denervation supersensitivity, and unmasking of latent synapses, are discussed in relation to these and other data.

scholarly journals Estimation of Personalized Heterogeneous Treatment Effects Using Concatenation and Augmentation of Feature Vectors

2020 ◽  
Vol 29 (05) ◽  
pp. 2050005
Author(s):  
Lev V. Utkin ◽  
Mikhail V. Kots ◽  
Viacheslav S. Chukanov ◽  
Andrei V. Konstantinov ◽  
Anna A. Meldo
Keyword(s):  
Treatment Effects ◽  
Regression Function ◽  
Simple Modification ◽  
Conditional Average ◽  
Treatment Groups ◽  
Feature Vectors ◽  
Average Treatment ◽  
Average Treatment Effects ◽  
The Difference ◽  
New Feature

A new meta-algorithm for estimating the conditional average treatment effects is pro-posed in the paper. The basic idea behind the algorithm is to consider a new dataset consisting of feature vectors produced by means of concatenation of examples from control and treatment groups, which are close to each other. Outcomes of new data are defined as the difference between outcomes of the corresponding examples comprising new feature vectors. The second idea is based on the assumption that the number of controls is rather large and the control outcome function is precisely determined. This assumption allows us to augment treatments by generating feature vectors which are closed to available treatments. The outcome regression function constructed on the augmented set of concatenated feature vectors can be viewed as an estimator of the conditional average treatment effects. A simple modification of the Co-learner based on the random subspace method or the feature bagging is also proposed. Various numerical simulation experiments illustrate the proposed algorithm and show its outperformance in comparison with the well-known T-learner and X-learner for several types of the control and treatment outcome functions.

Seeing Gender: Perceptual Representations of Transgender Individuals

2019 ◽  
Vol 11 (4) ◽  
pp. 474-482
Author(s):  
Kristina Howansky ◽  
Analia Albuja ◽  
Shana Cole
Keyword(s):  
Matching Task ◽  
Gender Typicality ◽  
Perceptual Representations ◽  
Visual Matching

In four studies, we explored perceptual representations of the gender-typicality of transgender individuals. In Studies 1a and 1b, participants ( N = 237) created an avatar based on an image of an individual who disclosed being transgender or did not. Avatars generated in the transgender condition were less gender-typical—that is, transmen were less masculine and transwomen were less feminine—than those created in the control condition. In Study 2 ( N = 368), using a unique visual matching task, participants represented a target labeled transgender as less gender-typical than the same target labeled cisgender. In Study 3 ( N = 228), perceptual representations of transwomen as less gender-typical led to lower acceptability of feminine behavior and less endorsement that the target should be categorized as female. We discuss how biased perceptual representations may contribute to the stigmatization and marginalization of transgender individuals.

Sign in / Sign up

Export Citation Format

Share Document