Reaction Times and Response Competition between the Right and Left Hands

1970 ◽  
Vol 22 (3) ◽  
pp. 513-520 ◽  
Author(s):  
Stuart Dimond

If subjects are required to make two responses at the same time, one with each hand, the responses of the hand appearing second in this sequence may be considerably delayed. The hands appear to be in competition with one another for first response. Interference of this kind was studied in an experiment in which, interspersed in a series of signals for either right or the left hand response, were a number of double signals which called simultaneously for response from both hands. Both the right and the left hands had an equal chance of taking precedence over the other, and an equal chance that their response would be delayed. The hand controlled by the dominant hemisphere responded first no more often than did the non-dominant one. A degree of synchrony developed between the responses of the hands as the subject experienced a greater number of signals for paired response. In a second experiment the hands were required to compete with one another after practice had been given in responding with only one hand. The effects of practice were not equal and opposite across the body. Practised left hand responses were found not to be disturbed by the addition of a simultaneous signal for another response, whereas right hand responses were. This relationship exists in both right and left-handed subjects, and the results seem to point to differences in cerebral control between the hemispheres which may be related not to handedness but to side of the body as such.

1883 ◽  
Vol 4 ◽  
pp. 46-52
Author(s):  
Warwick Wroth

The marble statue of a youthful male figure holding in his left hand a snake-encircled staff, which is reproduced in the accompanying plate, was found by Smith and Porcher at Cyrene, and is now in the collection of the British Museum. By its original discoverers this figure was named Aristaeus: an attribution which has been adopted, though with some hesitation, in the Museum Guide to the Graeco-Roman Sculptures. As, however, this attribution seems more than doubtful, it may be well to lay before the readers of the Hellenic Journal some additional remarks upon the subject, and to direct special attention to a statue which is not among those photographed in the History of Discoveries at Cyrene, and which has not, hitherto, been figured elsewhere.The statue now to be described is four feet five and a half inches in height, and represents a young and beardless male figure standing facing. His right hand rests upon his hip, and under his left arm is a staff round which is coiled a serpent. The lower half of the body is wrapt in a himation, the end of which falls over the left shoulder, leaving the chest and the right arm uncovered. The hair is wavy and carefully composed, but does not fall lower than the neck: around the head is a plain band, above which has been some kind of crown or upright headdress: the top of the head has been worked flat. On the feet are sandals, and at the side of the left foot is a conical object which has been called a rude representation of the omphalos, but which is, in all probability, a mere support.


1989 ◽  
Vol 41 (2) ◽  
pp. 263-272 ◽  
Author(s):  
Claire F. Michaels

Bauer and Miller (1982) demonstrated that when responding on the body midline with the right hand, subjects react faster when the pairing between horizontally oriented stimuli (an X to the left or right of fixation) and vertically oriented responses (an up or down finger movement) is left–down, right–up (“anti-clockwise”) but when responding with the left hand, the converse pairing was faster. The present experiments tested whether those preferences held for responses other than on the body midline. Unimanual reaction times for clockwise and anti-clockwise S–R pairings were determined for both hands at the midline and 30 and 60 cm to the left or right. Hand position determined both the direction and extent of the compatibility preference; at eccentric positions the right hand preferred clockwise pairings and the left anticlockwise, the converse of that found by Bauer and Miller. The results extend Bauer and Miller's finding, raise problems for theories of S–R compatibility, and further reveal that the state of the action system “sets up” perception.


1987 ◽  
Vol 101 (2) ◽  
pp. 89-94
Author(s):  
J. Bruyn

AbstractOf the nine interpretations proposed for Rembraradt's history Painting of 1626 now at Leiden, none is really convincing. Il seems attractive to think of palamedes Condemned by Agamemncm as the subject because of its political significance in the year after the publication of Voredel's tragecty Palamedcs or Innocence Murdered, which denounced the execution of the Remonstrant leader Johan van Oldenbarnevelt in 1619. γet the scene depicted does not fit any episode frorn the Palamedes story. It appears rather to represent three young men appearing before a crowned figure who makes a pronouncement, probably one of magnanimity or clemency. It is conceivable that the subject was taken from Q. Curtius Rufus's Historiae Alexandri Magni Macedonis, ofwhich several editions, including translations into the vernacular, were published in Holland in the first decades of the 17th century. The episode in question was known to the young Rubens, but does not seem to have been illustrated by any other artist. At the beginning of the seventh book it is described how Alexander summoned before. him in the presence of the army two oj three brothers, who had been close friends of Philotas, a former, friend of his who had been executed for plotting against his life. The youngest brother, Poleinon, had panicked and fled but was caught and brought back at the very moment when Alexander had accused the brothers and the eldest, Amyntas, after having been released from his bonds and given a spear which he held in his left hand, had embarked on his szzccess ful defence. The appearance of Polemon infuriated the soldiers, but when he took the blame on himself and prrifessed his brothers' innocence, they were moved to tears. So too was Alexander who, prompted by their cries, absolved the brothers. This anecdote does at least explain some of the features of Rembrandt's scene. The young man standing on the right with his right hand raised as if swearing an oath would be the eloquent Amyntas with a spear in his left hand. Hidden behind him kneels the second brother, Simias, while Polemon, 'a young man just come to maturity and in the first bloom of his youth', has fallen on one knee in the foreground, underlining his emotional words with his right hand bressed to his heart. Alexander raises his sceptre in token of his absolution and some men in the background wave and shout from a socle they have climbed. Interpreted in this way, the scene coralains not a topical political allegory but, as would seem usual with history paintings, a message of a more general nature: the magnanimity of Alexander as an 'exemblum virtutis'.


2008 ◽  
Vol 107 (2) ◽  
pp. 497-506
Author(s):  
P. S. B. Sarma

The purpose of the study was to replicate findings of an earlier study of fourth grade boys manifesting mixed handedness with a sample. Among 32 mixed-handed boys in Grades 6 to 8, the right-handed writer, left-handed thrower group obtained low spelling scores (Normal Curve Equivalent Scores) on the California Achievement Test significantly more frequently than the left-handed writer, right-handed thrower group. These findings are consistent with data for Grade 4 boys in the earlier study. Findings strengthen the hypotheses that mixed handedness is not a unitary neuropsychological entity and that boys who write with the right hand and throw with the left hand might be at risk for certain academic deficits.


2022 ◽  
Vol 8 (1) ◽  
pp. 257-262
Author(s):  
Vionita Putri ◽  
Elda Irma Jeanne Joice Kawulur ◽  
Febriza Dwiranti ◽  
Sabarita Sinuraya ◽  
Sita Ratnawati

Human has a preference to use their hands for various manual activities. Left-handed preference is people who tend to use their left hand to perform various manual activities, while right-handed people tend to use right-handed. Any researches show that the left-handed preference for more creativity was influenced by the dominant use of the right brain and bigger corpus callosum. The research aims to determine the percentage of left-handed preference and their creativity in Universitas Papua, Manokwari Papua Barat. The method used in this research is the descriptive method. Data collection used a questionnaire to evaluate individual hand preference using Handedness Questionnaire and to determine individual creativity using Adjective Check List. The percentage of left-handed people in UNIPA were 9.3% or lower than right-handed and higher than ambidextrous. Our study supports the statement about selection in handedness in the traditional society which showed a higher percentage of left-hander as advantages related to using hand intensively.  The percentage of left-handed males and females was almost equal and strongly left-handed was higher in females. The percentage of creative people was higher in left-handed, especially in males


Author(s):  
Tsymbalista L.R.

Валентність предиката має вирішальний вплив на структуру речення. Хоча активний і пасивний варіанти речення опису-ють одну й ту ж ситуацію, предикат проходить крізь трансформацію, яка тісно пов’язана з явищем валентності. У цій статті проаналізовано валентність предиката та її вплив на цю трансформацію у німецькій та українській мовах на прикладах із сучасної літератури.Мета. Метою статті є порівняння трансформації «актив – пасив» у німецькій та українській мовах та опис ролі валентності у цьому процесі.Методи. Для проведення дослідження було зібрано методом суцільної вибірки приклади пасивних конструкцій із сучас-них художніх текстів німецькою та українською мовами, які опісля було оброблено та проаналізовано з використанням типо-логічного, зіставного, описового методів, а також методу моделювання.Валентність предиката проявляється у його здатності формувати зв’язки з іншими елементами в реченні та дає змогу передбачити додаткові позиції у синтаксичній структурі речення, які можуть бути заповнені обов’язковими чи факультатив-ними компонентами. Для предиката властиві два типи валентності, які залежать від позиції поширювачів у реченні. Якщо лівобічну позицію переважно пов’язують із суб’єктом, то правобічна зазвичай стосується актантів з об’єктним, адресатним, локативним чи інструментальним значеннями.Результати. Зважаючи на те, що одна й та ж функція пасивних конструкцій у німецькій та українській мовах реалізується різними формами, валентні зміни у кожній з конструкцій мають свої особливості. Спільною рисою цих перетворень виступає зменшення облігаторних актантів на одну одиницю, яка може бути заповнена факультативно у разі комунікативної потреби у інформації про виконавця дії.Висновки. Можна зробити висновок, що валентність предиката є багатогранним феноменом, що підлягає впливу не лише формально-граматичних, а й семантико-синтаксичних чинників, а також мовленнєвої ситуації загалом. Відповідно, змін у валентності предикатів протягом трансформації з активу у пасив не можна уникнути. The valence of the predicate has a decisive effect on the structure of the sentence. Although the active and passive variant of the sentence describes the same situation, the predicate goes through a transformation that also has to do with valence. This article analyzes the valency of the predicate and its influence on such transformation in German and Ukrainian based on the examples from modern literature.Purpose. The purpose of the article is to compare the active-passive transformation in German and Ukrainian and to describe the role of valence in this process.Methods. For the research, we collected the examples of passive constructions from modern fiction in German and Ukrainian using the continuous sampling method, which were then processed and analyzed using typological, comparative, descriptive methods as well as the modelling method.The valence of the predicate verb shows in its ability to connect with other sentence elements and enables the prediction of the additional positions in the syntactic structure of the sentence, which can be supplemented by mandatory or optional components. The predicate is characterized by two types of valence, which depend on the position of the fillers in the sentence: the left-hand position is mainly connected the subject of the utterance, and the right-hand position has to do with actants which define object, addressee, location or have instrumental meaning.Results. Due to the fact that the same function of passive constructions in German and Ukrainian is realized in different forms, the valence changes in each of the constructions have their own features. A common feature of these transformations is the reduction of obligatory actants by one unit, which can be filled in optionally in case of communicative need for information about the performer of the action.Conclusions. We reach the conclusion that the valence of the predicate is a multilevel phenomenon that is influenced not only by formal grammatical but also by semantic and syntactic factors as well as the language situation in general. Accordingly, changes in the valence of predicates during the active-passive transformation are inevitable.


Author(s):  
David Zamorano-Garcia ◽  
Paula Flores-Morcillo ◽  
María Isabel Gil-García ◽  
Miguel Ángel Aguilar-Jurado

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.


1995 ◽  
Vol 80 (2) ◽  
pp. 671-674 ◽  
Author(s):  
Carl Gabbard ◽  
Susan Hart

Prior research has shown that right-handed adults perform better on a speed-tapping task with the right hand and right foot, while left-handers execute more rapidly with the left hand and right foot. Speculation is that environmental influence, most likely driving experience, may account for the right-foot bias. To examine this hypothesis further, 48 young right- and left-handed children were tested on a similar protocol. Analyses indicated no significant differences in foot performance within hand-preference groups. Since these findings do not complement reports for adults, factors such as experience or maturation might contribute to the difference. Were patterns similar, the effect of environmental influence would be assumed to be small. However, much more evidence is needed before an adequate explanation can be developed. The issue of possible environmental influence is discussed from various theoretical perspectives.


Archaeologia ◽  
1853 ◽  
Vol 35 (1) ◽  
pp. 190-193
Author(s):  
John Yonge Akerman

With the exception of Figs. 1, 2, 3, the Gold Ornaments engraved in Plate VIII. have no reference whatever to each other. The first three were obtained by Viscount Strangford, Director of the Society, from a Greek priest at Milo, in the year 1820. Figs. 1 and 3 appear to have formed the ends of a light chain, and the other (fig. 2) to have been pendent by a small loop on the top of the head. The figure has unfortunately lost the feet and the left hand, but the other parts are perfect. The right hand is raised in an admonitory attitude. The forehead appears as if encircled with a wreath, while the body is crossed by what would seem to be intended for the tendril of a vine. The necklace was formerly in the collection of the late Mr. H. P. Borrell, of Smyrna, but I am informed by his brother, Mr. Maximilian Borrell, who now possesses it, that no record exists of its discovery, and that he cannot learn the name of the individual from whom it was purchased. It was well known that Mr. H. P. Borrell was in the habit of purchasing ancient coins, which were sent to him from all parts of Greece and Asia-Minor, and that many rare and unique specimens fell into his hands, of which he contributed descriptions in various volumes of the Numismatic Chronicle. The necklace may, therefore, have been included in one of these numerous consignments, and we can scarcely indulge the hope that the place of its discovery will ever be made known. As an example of ancient art, it may vie with the most elaborate and beautiful specimens of goldsmiths' work of any age or period. The details are wonderfully minute and delicate, even the backs of the button-like objects at the ends of the pendent cords being elaborately finished.


Sensors ◽  
2019 ◽  
Vol 19 (10) ◽  
pp. 2265 ◽  
Author(s):  
Abhishek Kandwal ◽  
Zedong Nie ◽  
Lei Wang ◽  
Louis W. Y. Liu ◽  
Ranjan Das

This paper proposes an efficient transmission line modulation by using the bending technique to realize low profile leaky wave antennas in the Ku-band for frequency scanning and sensor applications. The paper focuses mainly on the bending effects of the transmission line in terms of the sharpness of edges. The right-hand/left-hand transmission line can be designed in the form of zig-zag pattern with sharp corners and only the right-hand transmission line in the form of sinusoidal patterns with smooth corners. In this presentation, we demonstrate that transmission lines of this kind can be used to realize highly efficient leaky wave antennas with broadband impedance matching and high gain characteristics in the Ku-band. Dispersion analysis and ladder network analysis have been performed for investigating the performance of the proposed designs. The sharpness of the bends periodically distributed along the body of the antenna has been used to our advantage for frequency scanning in the left-hand and right-hand quadrants at different frequencies. The proposed bending technique has been proven to be instrumental in achieving the desired characteristics of low profile leaky wave antennas.


Sign in / Sign up

Export Citation Format

Share Document