scholarly journals Lateral bias in lingual bracing during speech

2018 ◽  
Vol 144 (3) ◽  
pp. 1903-1903
Author(s):  
Bryan Gick ◽  
Megan Keough ◽  
Oksana Tkachman ◽  
Yadong Liu
Keyword(s):  
Animals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 647 ◽  
Author(s):  
Wells ◽  
McDowell

Cat breeds differ enormously in their behavioural disposition, a factor that can impact on the pet-owner relationship, with indirect consequences for animal welfare. This study examined whether lateral bias, in the form of paw preference, can be used as a tool for assessing breed differences in emotional reactivity in the cat. The paw preferences of 4 commonly owned breeds were tested using a food-reaching challenge. Cats were more likely to be paw-preferent than ambilateral. Maine Coons, Ragdolls and Bengals were more likely to be paw-preferent than ambilateral, although only the Bengals showed a consistent preference for using one paw (left) over the other. The strength of the cats’ paw use was related to cat breed, with Persians being more weakly lateralised. Direction of paw use was unrelated to feline breed, but strongly sex-related, with male cats showing a left paw preference and females displaying a right-sided bias. We propose that paw preference measurement could provide a useful method for assessing emotional reactivity in domestic cats. Such information would be of benefit to individuals considering the acquisition of a new cat, and, in the longer term, may help to foster more successful cat-owner relationships, leading to indirect benefits to feline welfare.


2013 ◽  
Vol 28 (1) ◽  
pp. 28-32 ◽  
Author(s):  
Matthew Wyon ◽  
Julie Harris ◽  
Derrick Brown ◽  
Frances Clarke

A lateral bias has been previously reported in dance training. The aim of this study was to investigate whether there are any bilateral differences in peak forces, power, and maximum knee flexion during a sequence of three grand jetés and how they relate to leg dominance. A randomised observational design was selected for the study. Volunteers consisted of 20 female dancers in the last year of pre-professional training. All volunteers completed three different tests to determine leg dominance prior to completing a three grande jeté sequence. The lead leg for the jump sequence was randomised. Peak take-off power, relative landing force (BW), and maximum knee flexion angles were measured using a Myotest accelerometer and integrated goniometer. Results indicated that 90% of dancers reported right leg dominance. A significant difference was noted in peak take-off power among the jumps (p<0.01); post hoc test indicated jump 3 was significantly greater than jump 1. Mean maximum take-off knee angles increased over the three-jump sequence with the left leg having a significantly deeper plié than the right (p<0.01). Landing data showed an increase in peak force and a decrease in maximum knee angles across the jump sequence. The present data indicate different bilateral strategies during take-off and landing during grand jetés in female dancers resulting in increased forces during the jumps on the non-dominant side. These differences need to be addressed by incorporating appropriate modifications in training methodology that eliminates the observed bilateral differences.


2013 ◽  
Vol 19 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Victoria Harms ◽  
Miriam Reese ◽  
Lorin J. Elias
Keyword(s):  

2016 ◽  
Vol 6 (3) ◽  
pp. 283-288 ◽  
Author(s):  
Harith Ahmad ◽  
Mahdiar Ghadiry ◽  
Asrulnizam Abd Manaf

Perception ◽  
1983 ◽  
Vol 12 (1) ◽  
pp. 71-84 ◽  
Author(s):  
Marian Annett

Directional biases in visual perception were examined for individual differences in sixty-five subjects on two tasks. One task required judgments of the onset asynchrony of pairs of dots presented at random, either one dot in each visual field, or both in the left visual field (LVF), or the right visual field (RVF). The second task required the recall of four letter strings presented randomly in either visual field. Dot-asynchrony judgments were influenced by two main biases: first, an outward from the centre bias in both visual fields, and second, a lateral bias which was significantly from left to right (L—R) in the total sample. A substantial minority of subjects were biased to judge the dots as occurring in right to left (R—L) order. Accuracy of letter report decreased fairly consistently from L—R in the RVF but varied in the LVF. Some subjects showed a L—R report gradient, some a R—L gradient, and some a U-shaped recall pattern. Significant correlations between measures of L—R and R—L biases on the two tasks show that the biases have some stable foundation. The findings suggest that there are directional biases affecting visual perception which are due neither to learned reading habits, nor to cerebral specialization of function.


1986 ◽  
Vol 36 (1) ◽  
pp. 154-175 ◽  
Author(s):  
Howard T. Hermann ◽  
Nancy L. Sonnabend ◽  
Yehoshua Y. Zeevi

Author(s):  
Gregory Charles Westergaard ◽  
Gayle Byrne ◽  
Stephen J. Suomi

2020 ◽  
Vol 24 (4) ◽  
pp. 183-189
Author(s):  
Frances Clarke ◽  
Yiannis Koutedakis ◽  
Margaret Wilson ◽  
Matthew Wyon

Although traditional dance training aims to train dancers' legs equally, the recognized practice of predominately starting and repeating exercises on one side more than the other has led to suggestions that technique classes may cause lateral bias. Such an imbalance could lead to a greater risk of injury; however, despite this potential risk, little is known about the effects of bilateral differences on dancers' postural stability during jump landings, a key dynamic action in dance. Therefore, the aim of this study was to examine the effects of possible bilateral differences on dynamic postural stability during single-leg landing using a time-to-stabilization protocol. Thirty-two injury-free female university undergraduate dancers (19 ± 1.9 years; 164.8 ± 6.7 cm; 62.6 ± 13.6 kg) volunteered for the study. They completed a two-foot to one-foot jump over a bar onto a force platform while stabilizing as quickly as possible. The landing leg was randomly assigned, and participants completed three trials for each leg. No significant differences in dynamic postural stability between right and left legs were revealed, and poor effect size was noted (p > 0.05): MLSI: t = -.04, df = 190, p = 0.940 (CI = -.04, .04, r2 = 0); APSI: t = .65, df = 190, p = 0.519 (CI = -.06-, .12, r2 = .09); VSI: t = 1.85, df = 190, p = 0.066 (CI = -.02, .68, r2 = .27); DPSI: t = 1.88, df = 190, p = 0.061 (CI = -.02, .70, r2 = .27). The results of this study do not support the notion that dance training may cause lateral bias with its associated risk of injury. Furthermore, dancers' self-perceptions of leg dominance did not correlate with their ability to balance in single-leg landings or to absorb the ground reaction forces often associated with injury. Even when biased training exists, it may not have detrimental effects on the dancer's postural stability.


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