The relationship between handedness and valence: A gesture study

People with different hand preferences assign positive and negative emotions to different sides of their bodies and produce co-speech gestures with their dominant hand when the content is positive. In this study, we investigated this side preference by handedness in both gesture comprehension and production. Participants watched faceless gesture videos with negative and positive content on eye tracker and were asked to retell the stories after each video. Results indicated no difference in looking preferences regarding being right- or left-handed. Yet, an effect of emotional valence was observed. Participants spent more time looking to the right (actor’s left) when the information was positive and to the left (actor’s right) when the information was negative. Participants’ retelling of stories revealed a handedness effect only for different types of gestures (representational vs beat). Individuals used their dominant hands for beat gestures. For representational gestures, while the right-handers used their right hands more, the left-handers gestured using both hands equally. Overall, the lack of significant difference between handedness and emotional content in both comprehension and production levels suggests that body-specific mental representations may not extend to the conversational level.

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The Relationship of Surgeon Handedness and Experience on Operative Duration and Hearing Improvement in Ipsilateral and Contralateral Otologic Surgeries

Philippine Journal of Otolaryngology Head and Neck Surgery ◽

10.32412/pjohns.v35i2.1505 ◽

2020 ◽

Vol 35 (2) ◽

pp. 17

Author(s):

Gillian Barzaga

Keyword(s):

Hearing Improvement ◽

Ear Surgery ◽

Hearing Gain ◽

Operative Duration ◽

Left Handed ◽

Significant Difference ◽

Surgeon Experience ◽

The Right ◽

Relationship Of ◽

The Relationship

ABSTRACT Objective: To determine the relationship of the surgeon handedness and operative site laterality on operative duration and hearing improvement in otologic surgery, and to further explore whether this relationship may be related to surgeon experience. Methods:Design: Retrospective CohortSetting: Tertiary Private Teaching HospitalParticipants: Seventy-three (73) patients aged 18 to 65 years old who underwent primary ear surgery under general anesthesia between January 2016 and December 2019 were retrospectively divided into two groups: 39 contralateral and 34 ipsilateral. The operative durations and hearing improvements were compared using independent t-tests, with consideration of surgeon experience in years further stratifying patients. Results: There was no significant difference in operative duration, t(71) = 1.14, p = .26, between the contralateral (M = 281.95 minutes, SD = 71.82) and ipsilateral (M = 261.15, SD = 79.26) groups. This same pattern was more pronounced among surgeons with 10+ years of experience although there was also no significant difference in operative time, t(33) = 1.31, p = .19 for both ipsilateral and contralateral surgeries There was no statistically significant difference, t(36) = -0.72, p = .47, in overall mean hearing gain among patients in the contralateral (M = +2.22 dB, SD = 10.54) and ipsilateral (M = +5.12 dB, SD = 14.26) groups. Although the difference was also not statistically significant, t(16) = -1.94, p = .07 for contralateral (M = 0.00, SD = 5.43) and ipsilateral (M = +7.95 dB, SD = 11.52) procedures performed by surgeons with experience of 10 years or more, a mean hearing gain of +7 dB in the ipsilateral group compared to 0 dB in the contralateral group was notable. Conclusion: This study did not prove that regardless of surgeon experience, right-handed surgeons operating on the right ear and left-handed surgeons operating on the left ear have better ear surgery outcomes of operative duration and hearing improvement compared to right- handed surgeons operating on the left ear and left-handed surgeons operating on the right ear. Future studies on larger samples with more complete data may yet demonstrate this effect.

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Functional Asymmetry and Fingerprint Features of Left-Handed and Right-Handed Young Yakuts (Mongoloid Race, North-Eastern Siberia)

Symmetry ◽

10.3390/sym10120728 ◽

2018 ◽

Vol 10 (12) ◽

pp. 728 ◽

Cited By ~ 1

Author(s):

Elena Shadrina ◽

Yakov Vol’pert

Keyword(s):

Northeast Asia ◽

Functional Asymmetry ◽

Dominant Hand ◽

Left Hand ◽

Left Handed ◽

Hand Grip ◽

Significant Difference ◽

North Eastern ◽

The Difference ◽

The Right

An ethnically homogeneous group of Yakuts (Mongoloid race, Northeast Asia), aged 18–31, was studied to characterize the diversity of particular features between left- and right-handed individuals. A total of 52 left-handed (32 women and 20 men) and 100 right-handed (50 women and 50 men) individuals were studied. Testing included two sets of questions and tasks, dynamometry of the right and left hand, and fingerprint analysis. Left-handed and right-handed people were found to differ in functional asymmetry of psychophysiological and motor reactions. Right-handers were characterized by higher intragroup similarity, while, among left-handers, greater dispersion of these traits was observed. Asymmetry in hand grip strength was less pronounced in the left-handed people than in the right-handed; this difference was statistically significant, and the difference was greater in men than in women. This suggests that the non-dominant hand in the left-handed people was subjected to a greater load and indicates the forced adaptation of the left-handed people to “dextrastress”. No significant difference between sexes was found when analyzing fingerprint patterns. Left-handers had arches significantly more often than right-handers. Radial loops were most often found on the index finger, and, in the left-handers, their occurrence was significantly higher on three to five fingers of the left hand compared with the right-handers. The levels of fluctuating asymmetry in left-handers and right-handers were similar.

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Handedness affects Emotional Valence Asymmetry

Perceptual and Motor Skills ◽

10.2466/pms.1989.68.2.435 ◽

1989 ◽

Vol 68 (2) ◽

pp. 435-441 ◽

Cited By ~ 9

Author(s):

Richard A. McFarland ◽

Robert Kennison

Keyword(s):

Negative Affect ◽

Hemispheric Asymmetry ◽

Emotional Responses ◽

Emotional Valence ◽

Left Handed ◽

Two Factors ◽

Left And Right ◽

The Asymmetry ◽

The Right ◽

Cerebral Processing

Music was played monaurally to 80 right-handed and 80 left-handed subjects. Right-handers reported more positive and less negative affect if the music was to the right ear. Left-handers reported experiencing more positive and less negative affect during music to the left ear. The hand × ear interaction was significant. The valence of emotional responses to the music seems influenced by a combination of at least two factors, (1) differences between left- and right-handers in the cerebral processing of emotional valence and (2) differences in the processing of emotional valence within each handedness group depending upon which hemisphere was initially most strongly engaged by the music. These results partially corroborate and extend the findings of previous studies in which briefer stimuli were presented tachistoscopically or dichotically. It is concluded that, while there is hemispheric asymmetry in the processing of emotional valence, the direction of the asymmetry may be associated with the handedness of the subjects.

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Improvement of Laterality Through the ABN Method in a Learning Enviroment in Early Education

Advances in Early Childhood and K-12 Education - Physical Education Initiatives for Early Childhood Learners ◽

10.4018/978-1-7998-7585-7.ch003 ◽

2021 ◽

pp. 33-54

Author(s):

David Zamorano-Garcia ◽

Paula Flores-Morcillo ◽

María Isabel Gil-García ◽

Miguel Ángel Aguilar-Jurado

Keyword(s):

Early Childhood ◽

Early Childhood Education ◽

Physical Education ◽

The Body ◽

Childhood Education ◽

Left Handed ◽

And Mathematics ◽

The Right ◽

The Relationship ◽

Shed Light

This chapter aims to shed light on the relationship between the development of laterality and the learning of mathematics in early childhood education using the ABN method. Thus, the authors present an experience developed with 24 children of 4 and 5 years old from several sessions of physical education where laterality and mathematics were worked on in the framework of a project developed in the classroom. The neuropsychological laterality test and a psychomotor table with values referred exclusively to manual and foot laterality, and indicators referred to the ABN method were used as evaluation instruments. The results obtained indicate that students with homogeneous right- or left-handed laterality obtain better results, as well as those with crossed laterality, since they have defined their manual and foot dominance. However, students with undefined laterality obtain worse results, even showing a lateral tendency towards the use of the right side of the body.

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Relationship between the recurrent laryngeal nerve and the inferior thyroid artery: a study in corpses

Revista do Hospital das Clínicas ◽

10.1590/s0041-87812000000600001 ◽

2000 ◽

Vol 55 (6) ◽

pp. 195-200 ◽

Cited By ~ 21

Author(s):

Bernardo Almeida Campos ◽

Paulo Roberto Ferreira Henriques

Keyword(s):

Recurrent Laryngeal Nerve ◽

Laryngeal Nerve ◽

Inferior Thyroid Artery ◽

Significant Difference ◽

Racial Variations ◽

Anatomical Relationship ◽

The Right ◽

The Relationship

The anatomical relationship between the recurrent laryngeal nerve (RLN) and the inferior thyroid artery (ITA) was studied in 76 embalmed corpses, 8 females and 68 males. In both sexes, the RLN lay more frequently between branches of the ITA.; it was found in this position in 47.3% of male corpses and 42.8% of female ones. On the right, RLN was found between branches of the ITA in 49.3% of the cases, anterior to it in 38.04%, and posterior in 11.26%. On the left, the RLN lay between branches of the ITA in 44.45%, posterior to the ITA in 37.05%, and anterior to it in 18.05% of the cases. In 62.68% of the cases, the relationship found on one side did not occur again on the opposite side. There was a significant difference (p<0.05) in the distribution of the 3 types of relationships between the RLN and the ITA, on the right and on the left. Racial variations could contribute to an explanation of the differences observed by authors of different countries in the relationship between the RLN and the ITA.

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The Effect Ofinitial Practice with Dominant and Non-Dominant Hand on Acquisition, Retention and Transfer of a Complex Motor Task

Biosciences Biotechnology Research Asia ◽

10.13005/bbra/2543 ◽

2017 ◽

Vol 14 (3) ◽

pp. 1067-1074 ◽

Cited By ~ 2

Author(s):

Malihe Moones Tousi ◽

Toktam Emami ◽

Seyed Mojtaba Hoseini

Keyword(s):

Movement Time ◽

Motor Task ◽

Transfer Task ◽

Female Students ◽

Dominant Hand ◽

Left Hand ◽

Right Hand ◽

Significant Difference ◽

Post Test ◽

The Right

ABSTRACT: The purpose of this study is to analyze the effect of practice orderwithdominant and non-dominant hand on acquisition, retention and transfer of basketball dribbling skills of female students at Ferdowsi University. The subjects were 20 female students of General Physical Education (19-24), who did not have any experiences in basketball with dominant right hand. They were randomly selected and equally assigned into two groups. The subjects practiced within the program for 4 weeks, 2 times a week and 45 minutes per session. Group A practiced with their dominant right hand for the first four sessions and then switched to their left hand for the second four sessions. Group B practiced reversely. The subjects were assessed by Slalom-Dribble-Test in pre-test and post-test. Retention and transfer tests were performed one week after the exercise was finished. The results showed that there was no significant difference between the two groups in acquisition of dribbling skill (p=0.053). Movement time has been significantly reduced from pre-test to post-test (p=0.00). The results showed better performance of the right hand compared to the left (p=0.042). Both groups had a shorter dribbling time with the right hand compared to the left hand in the post-test and retention test. There was no significant difference between two groups in transfer task (p = 0.16). The results indicate that practicing with dominant and non-dominant limbs in the initial motor learning seems to be important to improve performance of both limbs and to strengthen bilateral competence of the learners.

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Lateral differences in maximal grip strength in Czech male tennis players aged 11 – 12 in the context of injury prevention

Studia sportiva ◽

10.5817/sts2019-1-6 ◽

2019 ◽

Vol 13 (1) ◽

pp. 55-62

Author(s):

Roman Kolínský ◽

Jiří Zháněl

Keyword(s):

Grip Strength ◽

Effect Size ◽

Body Height ◽

Statistical Characteristics ◽

Medium Effect ◽

Dominant Hand ◽

Tennis Players ◽

Left Handed ◽

Small Effect Size ◽

The Right

The term laterality indicates the one-sided preference or functional advantage of the stronger, more accurate and coordinated limbs or organs and the brain hemisphere of a human body. In the preference process, more accurate, precise, coordinated and stronger side is chosen from the perspective of motoric functions. Among the general population is about 10-13% of left-handers and in certain sport fields this percentage may (baseball, tennis, box etc.). The left-handed dominance in tennis is considered an advantage. Due to unilateral load, there may be an excessive side-effect in strength differences in tennis and overloading of specific muscle group could lead to an injury. The aim of the research was to identify the levels of somatic and strength characteristics and assess the lateral difference in maximal grip strength of Czech elite male tennis players. The sample consisted of male tennis players, ranging in age from 11 to 12.9 years (n=186) who participated in the regular tests for Czech Tennis Association in years 2000-2018. Base anthropometrics were measured (height, weight) and maximal grip strength of both hands using the hand-held dynamometry (Grip D, Takei). Data came from normal distribution (statistically proven – chi-square test). The basic statistical characteristics were calculated (body height, M=155.08±7.98 cm; body weight, M=43.45±7.13 kg; strength of right hand: M=24.88±4.67 kp; strength of left hand: M=21.70±4.74 kp). It was found that 87.6% of the players (n=163) were right-handed and the remaining 12.4% left-handed (n=23). The assessment of the significance (Cohen´s d) between the dominant (playing) hand for the right-handed and left-handed players showed small effect size (dominant hand right: MRHR=25.11±4.41 kp, dominant hand left: MLHL=26.62±5.65 kp; d=0.30, small) in favor of the left-handed players. The difference between the dominant and the non-dominant hand showed large effect size for the right-handed (dominant hand right vs. hand left; MRHR=25.11±4.41 kp, MRHL=21.01±4.15 kp, d=0.96, large) and medium effect size for the left-handed players (dominant hand left vs. hand right; MLHL=26.62±5.65 kp, MLHR=23.24±5.98 kp, d=0.58, medium). The results showed that the value of 15 % level of strength laterality between dominant and non-dominant hand was exceeded for the right-handed (55.83 %) and left-handed (43.48%) groups ergo the exceeded value could be a cause of injuries. Because of this signals attention should be given during training process for optimizing the required load.

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EVALUATION OF THE RELATIONSHIP BETWEEN PULMONARY ARTERY STIFFNESS AND RIGHT VENTRICULAR FUNCTION IN PATIENTS WITH BEHÇET’S DISEASE USING TRANSTHORACIC ECHOCARDIOGRAPHY

10.22541/au.163615894.48445737/v1 ◽

2021 ◽

Author(s):

Salim Yaşar ◽

Murat Unlu ◽

suat gormel ◽

Emre Yalcinkaya ◽

Baris BUGAN ◽

...

Keyword(s):

Pulmonary Artery ◽

Right Ventricular ◽

Patient Group ◽

Behcet’S Disease ◽

Left Ventricular ◽

Significant Difference ◽

Artery Stiffness ◽

The Right ◽

The Relationship ◽

Ventricular Functions

Background: Behçet’s disease is a systemic vasculitis that can affect all sizes of arteries and veins. Arterial stiffness is a term used to describe the visco-elastic properties of vessel wall. In this study, we aimed to evaluate the relationship between pulmonary artery stiffness (PAS) and the right ventricular (RV) functions in asymptomatic Behçet’s patients with no cardiovascular risk factors. Methods: We studied 40 patients who were diagnosed by the international diagnostic criteria of Behçet’s disease and 40 healthy individuals who were matching demographic properties with the patients. Two groups were matched by age, gender, clinical history and other clinical features. Substantial medical history concerning the factors that can affect right ventricle diastolic function (such as medications, smoking status, other comorbities, etc.) was taken and general physical examination was carried out. The right and left ventricular functions as well as valvular functions were evaluated by using echocardiography. Also Two-dimensional, M-mode, pulsed wave (PW) Doppler echocardiographic parameters were measured for right ventricular functions. PW Doppler flow trace was obtained from the pulmonary valve with regards to pulmonary artery stiffness. Results: There was no significant difference in terms of clinical and demographic properties. No statistically significant difference was found upon comparison of the left ventricular end of systole and diastole diameters, the diastolic and systolic thicknesses of the interventricular septum (IVS) and left ventricular posterior wall (LVPW), left atrium (LA) diameter and left ventricular ejection fraction (LVEF) values (p>0.05) of the two groups. Right ventricular myocardial performance index (MPI) value was found higher in Behçet’s patients and a statistically significant difference was detected between the groups (p<0.01). Tricuspid annular plane systolic excursion (TAPSE) values were found to be statistically significantly lower in the patient group as compared to the control group (p<0.01). In PW Doppler measurements, early passive filling (E) wave flow velocity and E/A ratio were found to be statistically significantly lower, deceleration time (DT) was higher in the patient group (p<0.01). In Behçet’s patients without clinical pulmonary involvement, the pulmonary artery systolic pressure (PASP) was found to be statistically significantly higher in the patient group (p<0.01). The values of pulmonary artery stiffness (PAS) were found to be significantly higher in the patient group (p<0.01). The relationship between the right ventricular function markers and PAS were evaluated in the patient group. There was no statistically significant relationship between PAS and MPI and TAPSE. But there was a significant correlation between PAS and PASP and duration of illness (p<0.001 and r=0.682 ; p=0.047 and r=0,316). Conclusion: Behçet’s patients without cardiac symptoms and signs, reduction in right ventricular functions and increase in PAS was detected. Although there is no correlation between right ventricular functions and PAS, increased PAS may be an early marker of reduction of the right ventricular functions. Consequently, routine cardiological examination and detailed evaluation of biventricular functions by using echocardiography should be greatly beneficial in Behcet’s patients, even though there are no signs or symptoms.

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Analysis of the coracoid morphology with multiplanar 2D CT and its effects on the graft size in the Latarjet procedure

Journal of Orthopaedic Surgery ◽

10.1177/2309499020964602 ◽

2020 ◽

Vol 28 (3) ◽

pp. 230949902096460

Author(s):

Abdulkadir Sarı ◽

Hadi Sasani ◽

Mehmet Ümit Çetin ◽

Burak Günaydin ◽

Seyran Kilinç ◽

...

Keyword(s):

Reconstruction Method ◽

Dominant Hand ◽

Dominant Group ◽

Positive Correlation ◽

Left Hand ◽

Computed Tomography Images ◽

Significant Difference ◽

Defect Repair ◽

The Individual ◽

The Right

Purpose: In this study, we aimed to reveal the individual differences regarding the size of the coracoid and their effects on the classical and modified Latarjet procedures. Methods: Computed tomography images of 120 patients (mean age: 41.18 ± 12.01 years) without shoulder complaints or shoulder instability were evaluated retrospectively. The glenoid width, the surgical graft length, and the coracoid total length, width, and thickness were measured using the multiplanar reconstruction method on the Sectra Picture Archiving and Communications System (PACS) system. Age, gender, side, the dominant hand, and the height of the patients were recorded and the correlations between them were investigated. On the created hypothetical model, the current size of the coracoid was evaluated to determine what size of glenoid defects it could repair by employing the classical and the modified Latarjet techniques. Results: There was no significant difference between the right-hand-dominant group and the left-hand-dominant group in terms of coracoid measurement results ( p > 0.05). Again, there was no statistically significant difference between the right and the left side regarding the coracoid size ( p > 0.05). A positive correlation could be detected only between age and the coracoid width and thickness ( p < 0.05). A positive correlation was also found between the glenoid width and the coracoid width and thickness in both shoulders ( p < 0.001). Coracoid thickness could fill in the defects that amounted to 40% of the glenoid width, while the coracoid width could fill in for the defects that were 50% of the glenoid width in both genders. Conclusion: Our study showed that hand dominance and side were not effective on the coracoid dimensions. In addition, it has been shown that the coracoid dimensions did not have a significant effect in the choice of Latarjet technique in terms of defect repair and that repair rates of up to 40% could be achieved in glenoid defects with both techniques.

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Efficacy in positions 1 and 2 in simple temporary numerical inequality at 15th Water polo World Championship (Eficacia desde posiciones 1 y 2 en situación de desigualdad en el 15º Campeonato del Mundo de Waterpolo)

Retos ◽

10.47197/retos.v0i41.82416 ◽

2021 ◽

pp. 425-433

Author(s):

Yurema Sabio Lago ◽

Francisco M. Argudo-Iturriaga ◽

Myriam Guerra-Balic ◽

Josep Cabedo-Sanromà

Keyword(s):

Ad Hoc ◽

Chi Square ◽

World Championship ◽

Water Polo ◽

Left Handed ◽

Positive Action ◽

Chi Square Test ◽

The Right ◽

The Relationship ◽

Code Version

The aim of this study was twofold: to know if the left-handed players are more effective in the goal categories and getting positive actions, in 1 and 2 position, than the right-handed in the same position at numerical inequality. To ascertain if the shots in 1 and 2 position, are less effective than the rest of the positions in the goal categories. A nomothetic observational, multidimensional and punctual design was used. The sample was the 389 shots and the 182 positive actions of 24 games (12 male and 12 female) at 15th FINA World Championship held in Barcelona. To record the data was used an ad hoc instrument for observation through the Sport Code Version Pro V9. Descriptive and Chi-square test was applied to study the relationship between variables. Left-handed players are more effective than right-handed players are if they are related to the goal and positive action categories in position 1. Shots from position 1 are the second least effective while position 2 is the fifth most effective. Resumen. El objetivo de este estudio fue doble: saber si los jugadores zurdos son más efectivos en las categorías de gol y obtener acciones positivas, en la posición 1 y 2, que los diestros en la misma posición en la desigualdad numérica. Determinar si los lanzamientos desde posición 1 y 2 son menos efectivos que desde el resto de posiciones en las categorías de gol. Se utilizó un diseño nomotético observacional, multidimensional y puntual. La muestra fueron los 389 tiros y las 182 acciones positivas de 24 juegos (12 masculinos y 12 femeninos) en el 15º Campeonato Mundial FINA celebrado en Barcelona. Para registrar los datos se utilizó un instrumento ad hoc para observación a través del software Sport Code Version Pro V9. Se aplicó la prueba descriptiva y de Chi-cuadrado para estudiar la relación entre las variables. Los jugadores zurdos son más efectivos que los diestros si están relacionados con el objetivo y las categorías de acción positiva en la posición 1. Los lanzamientos desde la posición 1 son los segundos menos efectivos, mientras que desde la posición 2 es la quinta más efectiva.

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