OBJECTIVE To compare the proportion of synovitis detected by ultrasonographic study (USS) of the hands, in subjects with no rheumatologic known disease according to self-reported level of overexertion performed the day before. METHODS 407 consecutive volunteers were enrolled in a twelve-month period and underwent an ultrasound assessment of the hand. All studies were performed on Monday or Fr...

The purpose of this study was to report age- and gender-specific distribution of the hand grip strength (HGS) using data from the Korea National Health and Nutrition Examination Survey (KNHANES) VI-3 (2015) survey and determine cut-off values for low muscle strength of HGS of Koreans. Of a total of 7,380 participants, 4,553 were subjected to measurements of HGS, including 1,997 men and 2,556 wo...

Previous studies suggest that mental rotation can be accomplished by using different mental spatial transformations. When adopting the allocentric transformation, individuals imagine the stimulus rotation referring to its intrinsic coordinate frame, while when adopting the egocentric transformation they rely on multisensory and sensory-motor mechanisms. However, how these mental transformations...

Humans routinely use both of their hands to gather information about shape and texture of objects. Yet, the mechanisms of how the brain combines haptic information from the two hands to achieve a unified percept are unclear. This study systematically measured the haptic precision of humans exploring a virtual curved object contour with one or both hands to understand if the brain integrates hap...

Hemispheric lateralization for spatial attention and its relationships with manual preference strength and eye preference were studied in a sample of 293 healthy individuals balanced for manual preference. Functional magnetic resonance imaging was used to map this large sample while performing visually guided saccadic eye movements. This activated a bilateral distributed cortico-subcortical net...

TO THE EDITOR: The finding in the informative article by Goble and Brown (2008) in support of a “sensory-modality-based hypothesis of handedness” is liable to a different interpretation than that offered by the authors as follows: After providing a mental template for movements of different excursions with either limb, their subjects enacted the same movements ipsilaterally and contralaterally....

Spirograph drawings are used in most comprehensive assessments of essential tremor (ET). Nevertheless, several different paradigms are used and no effort has been made to compare these. We used two different cohorts to assess different aspects of spiral rating. In the first, we had subjects simulate different levels of effort by writing (1) 'normally', (2) 'slowly and carefully', (3) 'softly', ...

Patients with classical migraine whose auras included paraesthesiae or numbness in the hands have been reviewed. In 55 of 111 patients the symptoms were on the same side of the body as the headache and in only 20 on the opposite side to the headache. In the remaining 36 patients one or other was incompletely lateralised. Five right handed patients described dysphasia at the same time as paraest...

BACKGROUND Healthcare workers face the risk of acquiring blood-borne infections from patients through needle stick injuries. Understanding the factors that are associated with increased risk, for example, the role of the dominant hand, is important so that preventive measures can be focused. METHODS The EPINet (Exposure Prevention, Information Network--a trade mark of Virginia University) que...

AIM The aim of the study was to investigate coordination of fingertip forces during an asymmetrical bimanual task in children with unilateral cerebral palsy (CP). METHOD Twelve participants (six males, six females; mean age 14y 4mo, SD 3.3y; range 9-20y;) with unilateral CP (eight right-sided, four left-sided) and 15 age-matched typically developing participants (five males, 10 females; mean ...