scholarly journals Examining handedness and sex-related effects on line-bisection in childhood

2019 ◽  
Vol 12 (1) ◽  
pp. 111-119
Author(s):  
Ivanka V. Asenova ◽  
Yoanna R. Andonova-Tsvetanova
Keyword(s):  
Line Bisection ◽  
Group Level ◽  
Left Hand ◽  
Right Hand ◽  
Main Effect ◽  
On Line ◽  
True Center ◽  
The Right

Eighty-eight Bulgarian children (range 5 – 7 years old), 40 left handers (18 boys) and 48 right handers (26 boys), completed line-bisection test one time with each hand. In accordance with previous studies the results show that the majority of children demonstrated deviation to the left of the true center with the left hand and to the right with the right hand, suggesting symmetrical neglect. Sex, handedness and their interaction had no main effect on mean percentage deviation scores at the group level, but only sex had a significant impact on the frequency of symmetrical neglect (p < .05), with higher one in girls than in boys.

scholarly journals Hemispheric antagonism in visuo-spatial neglect: A case study

1996 ◽  
Vol 2 (5) ◽  
pp. 412-418 ◽  
Author(s):  
John C. Marshall ◽  
Peter W. Halligan
Keyword(s):  
Right Hemisphere ◽  
Task Demands ◽  
Line Bisection ◽  
Spatial Neglect ◽  
Perceptual Task ◽  
Left Hand ◽  
Right Hand ◽  
The Right ◽  
Line Bisection Task

AbstractWe report a case of severe visuo-spatial neglect consequent upon right-hemisphere stroke. At the time of testing, the patient had no visual field cut and no significant hemiparesis. Conventional testing on cancellation tasks with the right hand revealed reliable left neglect, but performance was significantly improved when the left hand was used. Investigations of (manual) line bisection showed normal performance with the right hand but right neglect when the left hand was used. Right neglect was also observed on a purely perceptual version of the line bisection task. We argue that the attentional vectors of the cerebral hemispheres can be modulated by (perceptual) task-demands and by (motorie) response demands. (JINS, 1996, 2, 412–418.)

Editorial Note

1946 ◽  
Vol 11 (1) ◽  
pp. 2-2
Keyword(s):  
Editorial Note ◽  
Speech Sounds ◽  
Left Hand ◽  
Hand Column ◽  
Right Hand ◽  
Infant Speech ◽  
The Right

In the article “Infant Speech Sounds and Intelligence” by Orvis C. Irwin and Han Piao Chen, in the December 1945 issue of the Journal, the paragraph which begins at the bottom of the left hand column on page 295 should have been placed immediately below the first paragraph at the top of the right hand column on page 296. To the authors we express our sincere apologies.

scholarly journals Digit Variability in Carotenoid Scores Obtained with the Veggie Meter: A Pilot Study (P02-001-19)

2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Velarie Ansu ◽  
Stephanie Dickinson ◽  
Alyce Fly
Keyword(s):  
Indiana University ◽  
Left Hand ◽  
Funding Sources ◽  
Right Hand ◽  
Period Data ◽  
The Mean ◽  
The Right ◽  
Post Hoc ◽  
Main Effects ◽  
Mean Square Errors

Abstract Objectives To determine which digit and hand have the highest and lowest skin carotenoid scores, to compare inter-and-intra-hand variability of digits, and to determine if results are consistent with another subject. Methods Two subjects’ first(F1), second(F2), third(F3) and fifth(F5) digits on both hands were measured for skin carotenoids with a Veggie Meter, for 3 times on each of 18 days over a 37-day period. Data were subjected to ANOVA in a factorial treatment design to determine main effects for hand (2 levels), digits (4), and days (18) along with interactions. Differences between digits were determined by Tukey's post hoc test. Results There were significant hand x digit, hand x day, digit x day, and hand x digit x day interactions and significant simple main effects for hand, digit, and day (all P < 0.001). Mean square errors were 143.67 and 195.62 for subject A and B, respectively, which were smaller than mean squares for all main effects and interactions. The mean scores ± SD for F1, F2, F3, and F5 digits for the right vs left hands for subject A were F1:357.13 ± 45.97 vs 363.74 ± 46.94, F2:403.17 ± 44.77 vs. 353.20 ± 44.13, F3:406.76 ± 43.10 vs. 357.11 ± 45.13, and F5:374.95 ± 53.00 vs. 377.90 ± 47.38. For subject B, the mean scores ± SD for digits for the right vs left hands were F1:294.72 ± 61.63 vs 280.71 ± 52.48, F2:285.85 ± 66.92 vs 252.67 ± 67.56, F3:268.56 ± 57.03 vs 283.22 ± 45.87, and F5:288.18 ± 34.46 vs 307.54 ± 40.04. The digits on the right hand of both subjects had higher carotenoid scores than those on the left hands, even though subjects had different dominant hands. Subject A had higher skin carotenoid scores on the F3 and F2 digits for the right hand and F5 on the left hand. Subject B had higher skin carotenoid scores on F5 (right) and F1 (left) digits. Conclusions The variability due to hand, digit, and day were all greater than that of the 3 replicates within the digit-day for both volunteers. This indicates that data were not completely random across the readings when remeasuring the same finger. Different fingers displayed higher carotenoid scores for each volunteer. There is a need to conduct a larger study with more subjects and a range of skin tones to determine whether the reliability of measurements among digits of both hands is similar across the population. Funding Sources Indiana University.

The State Policy towards the Homeless in Moldova between the ‘Left Hand’ and the ‘Right Hand’. The Case of Chișinău Shelter

Südosteuropa ◽  
2019 ◽  
Vol 67 (2) ◽  
pp. 175-195
Author(s):  
Petru Negură
Keyword(s):  
Homeless People ◽  
Severe Disabilities ◽  
The State ◽  
Small Scale ◽  
Left Hand ◽  
Right Hand ◽  
Binary Approach ◽  
The One ◽  
The Right ◽  
Depth Interviews

Abstract The Centre for the Homeless in Chișinău embodies on a small scale the recent evolution of state policies towards the homeless in Moldova (a post-Soviet state). This institution applies the binary approach of the state, namely the ‘left hand’ and the ‘right hand’, towards marginalised people. On the one hand, the institution provides accommodation, food, and primary social, legal assistance and medical care. On the other hand, the Shelter personnel impose a series of disciplinary constraints over the users. The Shelter also operates a differentiation of the users according to two categories: the ‘recoverable’ and those deemed ‘irrecoverable’ (persons with severe disabilities, people with addictions). The personnel representing the ‘left hand’ (or ‘soft-line’) regularly negotiate with the employees representing the ‘right hand’ (‘hard-line’) of the institution to promote a milder and a more humanistic approach towards the users. This article relies on multi-method research including descriptive statistical analysis with biographical records of 810 subjects, a thematic analysis of in-depth interviews with homeless people (N = 65), people at risk of homelessness (N = 5), professionals (N = 20) and one ethnography of the Shelter.

scholarly journals The Left Hand Doesn’t Know What the Right Hand Is Doing—or Does It?

Cell Reports ◽  
2016 ◽  
Vol 17 (11) ◽  
pp. 2809-2810
Author(s):  
Jody C. Culham
Keyword(s):  
Left Hand ◽  
Right Hand ◽  
The Right

Nog een suggestie voor het onderwerp van Rembrandts historiestuk te Leiden: De grootmoedigheid van Alexander

1987 ◽  
Vol 101 (2) ◽  
pp. 89-94
Author(s):  
J. Bruyn
Keyword(s):  
17Th Century ◽  
General Nature ◽  
History Painting ◽  
Emotional Words ◽  
Left Hand ◽  
Right Hand ◽  
Political Allegory ◽  
The Subject ◽  
Background Wave ◽  
The Right

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'.

scholarly journals Refinements of the Lower Bounds of the Jensen Functional

2011 ◽  
Vol 2011 ◽  
pp. 1-13 ◽  
Author(s):  
Iva Franjić ◽  
Sadia Khalid ◽  
Josip Pečarić
Keyword(s):  
Lower Bounds ◽  
Jensen Inequality ◽  
Left Hand ◽  
Right Hand ◽  
Special Cases ◽  
Jensen Functional ◽  
The Difference ◽  
The Right

The lower bounds of the functional defined as the difference of the right-hand and the left-hand side of the Jensen inequality are studied. Refinements of some previously known results are given by applying results from the theory of majorization. Furthermore, some interesting special cases are considered.

scholarly journals A Meta-Analysis of Line Bisection and Landmark Task Performance in Older Adults

2021 ◽  
Author(s):  
Gemma Learmonth ◽  
Marietta Papadatou-Pastou
Keyword(s):  
Meta Analysis ◽  
Line Length ◽  
Line Bisection ◽  
Group Level ◽  
Bisection Task ◽  
Leftward Bias ◽  
State Dependent ◽  
The Right ◽  
Meta Analyses ◽  
Line Bisection Task

AbstractYoung adults exhibit a small asymmetry of visuospatial attention that favours the left side of space relative to the right (pseudoneglect). However, it remains unclear whether this leftward bias is maintained, eliminated or shifted rightward in older age. Here we present two meta-analyses that aimed to identify whether adults aged ≥50 years old display a group-level spatial attention bias, as indexed by the line bisection and the landmark tasks. A total of 69 datasets from 65 studies, involving 1654 participants, were analysed. In the meta-analysis of the line bisection task (n = 63), no bias was identified for studies where the mean age was ≥50, but there was a clear leftward bias in a subset where all individual participants were aged ≥50. There was no moderating effect of the participant’s age or sex, line length, line position, nor the presence of left or right cues. There was a small publication bias in favour of reporting rightward biases. Of note, biases were slightly more leftward in studies where participants had been recruited as part of a stand-alone older group, compared to studies where participants were recruited as controls for a clinical study. Similarly, no spatial bias was observed in the meta-analysis of the landmark task, although the number of studies included was small (n = 6). Overall, these results indicate that over 50s maintain a group-level leftward bias on the line bisection task, but more studies are needed to determine whether this bias can be modulated by stimulus- or state-dependent factors.

Interosseous Muscle Pain in the Pianist's Hand: A Description of 27 Cases of Musician's Hand

2007 ◽  
Vol 22 (1) ◽  
pp. 24-25
Author(s):  
Naotaka Sakai
Keyword(s):  
Muscle Weakness ◽  
Muscle Pain ◽  
Deep Part ◽  
Piano Performance ◽  
Medical Problems ◽  
Main Symptom ◽  
Left Hand ◽  
Dorsal Hand ◽  
Right Hand ◽  
The Right

Among 703 professional pianists with medical problems in their hands seen by the author between 1981 and 2000, there were 27 patients who had interosseous muscle pain (23 women, 4 men; mean age, 30 yrs). The main symptom was dorsal hand pain during piano performance, especially when striking the keys with each finger rounded, mainly in the scale technique. Tenderness was noted in the deep part of the dorsal hand in the interosseous muscles, but not along or around the finger extensors. Patients sometimes complained of muscle weakness on abduction of the index, ring, and/or little fingers when performing octaves or chords on the piano keyboard. Resisted abduction and adduction testing of the fingers reproduced the pain which they experienced during or after performance. Pain occurred in the right hand in 10, left hand in 5, and bilaterally in 12. The pain was localized in the 4th and 5th interossei in 15 patients, in the 3rd and 4th in 14 patients; in the 2nd and 3rd in 11 patients; and in the 1st and 2nd in 1 patient.

scholarly journals Bilateral anatomical variations of the hand extensors

2016 ◽  
Vol 15 (2) ◽  
pp. 278-282
Author(s):  
Humberto Ferreira Arquez
Keyword(s):  
Anatomical Variation ◽  
Medical Science ◽  
Ring Finger ◽  
Anatomical Variations ◽  
Extensor Digitorum ◽  
Left Hand ◽  
Extensor Tendons ◽  
Right Hand ◽  
The Right ◽  
Little Finger

Background: The purpose of this paper is to describe an anatomical variation of the hand extensor on the little finger of the right hand which receives four tendons, condition unknown, as it is the first case reported so far in the literature. The human extensor tendons of hand often display an array of variations. Awareness of the anatomy and variations of the extensor tendons on the dorsum of the hand is necessary not only for the anatomist but also for surgeons when considering tendons for hand surgery, tendon rerouting or transplants. Materials and Methods: Bilateral anatomical variation in the upper limb was found during routine dissection in a 75-year-old male cadaver in the Morphology Laboratory at the University of Pamplona. The variations were recorded and photographed. Result: In the left hand the extensor digitorum there was a single tendon to the index, double tendon to the middle, triple tendon to the ring finger, a single tendon to the little finger or digiti minimi. The extensor digiti minimi has double tendon. In the right hand the extensor digitorum there was a single tendon to the index, triple tendon to the middle finger, triple tendons to the ring finger, a double tendon to the little finger. The extensor digiti minimi has double tendon. The little finger receives four tendons, 2 of extensor digitorum and 2 of extensor digiti minimi. The dorsum of the left hand and right showed juncturae tendinum type 2, between the extensors tendons in the 3rd intermetacarpal space; type 3, between the extensors tendons in the 4th inter metacarpal space. Conclusion: The presence of multiple tendons may alter the kinematics around the site of attachment to the phalanx. Knowledge of anatomical variations and normal anatomy of the extensor tendons, may be helpful while performing graft and tendon transfer operations.Bangladesh Journal of Medical Science Vol.15(2) 2016 p.278-282

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