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https://www.readbyqxmd.com/read/29028217/efficacy-of-guided-spiral-drawing-in-the-classification-of-parkinson-s-disease
#1
Poonam Zham, Sridhar Arjunan, Sanjay Raghav, Dinesh Kant Kumar
BACKGROUND: Change of handwriting can be an early marker for severity of Parkinson's disease but suffers from poor sensitivity and specificity due to inter-subject variations. AIM: This study has investigated the group-difference in the dynamic features during sketching of spiral between PD and control subjects with the aim of developing an accurate method for diagnosing PD patients. METHOD: Dynamic handwriting features were computed for 206 specimens collected from 62 Subjects (31 Parkinson's and 31 Controls)...
October 11, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/29016576/quality-of-clinical-notes-lesson-learned-from-elective-surgery-patients-admitted-at-university-teaching-hospital
#2
Jay N Shah, Shantbir Maharjan, Shailendra Shah
BACKGROUND: Informative relevant documentation regarding course of treatment minimizes errors, provides data for evidence based practice and legality. However, the clinical notes are often inadequate. This study aims to analyse quality of structured clinical notes in surgical patients. METHODS: This cross sectional study from Oct 1, 2015 in department of surgery included 100 clinical notes randomly selected by lottery. The entries in notes were predefined. There were 29 general entries (nine for identification, eleven for admission details, eight for treatment progress, and one for handwriting)...
September 8, 2017: Journal of Nepal Health Research Council
https://www.readbyqxmd.com/read/28989267/the-impact-of-transcription-writing-interventions-for-first-grade-students
#3
Jeanne Wanzek, Brandy Gatlin, Stephanie Al Otaiba, Young-Suk Grace Kim
We examined the effects of transcription instruction for students in first grade. Students in the lowest 70% of the participating schools were selected for the study. These 81 students were randomly assigned to: (a) spelling instruction, (b) handwriting instruction, (c) combination spelling and handwriting instruction, or (d) no intervention. Intervention was provided in small groups of 4 students, 25 min a day, 4 days a week for 8 weeks. Students in the spelling condition outperformed the control group on spelling measures with moderate effect sizes noted on curriculum-based writing measures (e...
2017: Reading & Writing Quarterly: Overcoming Learning Difficulties
https://www.readbyqxmd.com/read/28961136/static-and-dynamic-synthesis-of-bengali-and-devanagari-signatures
#4
Miguel A Ferrer, Sukalpa Chanda, Moises Diaz, Chayan Kumar Banerjee, Anirban Majumdar, Cristina Carmona-Duarte, Parikshit Acharya, Umapada Pal
Developing an automatic signature verification system is challenging and demands a large number of training samples. This is why synthetic handwriting generation is an emerging topic in document image analysis. Some handwriting synthesizers use the motor equivalence model, the well-established hypothesis from neuroscience, which analyses how a human being accomplishes movement. Specifically, a motor equivalence model divides human actions into two steps: 1) the effector independent step at cognitive level and 2) the effector dependent step at motor level...
September 27, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28948860/understanding-handwriting-difficulties-a-comparison-of-children-with-and-without-motor-impairment
#5
Mellissa Prunty, Anna L Barnett
The nature of handwriting difficulties have been explored in children with specific developmental disorders. The aim of this study was to investigate the nature of handwriting difficulties in children with dysgraphia, a less studied group who have significant handwriting difficulties in the absence of motor control or cognitive difficulties. The performance of a dysgraphia group aged 8-14 years was compared to a group with Developmental Coordination Disorder and to typically developing (TD) controls. Participants completed two handwriting tasks on a digitizing writing tablet...
September 26, 2017: Cognitive Neuropsychology
https://www.readbyqxmd.com/read/28906176/developmental-dysgraphia-an-overview-and-framework-for-research
#6
Michael McCloskey, Brenda Rapp
Developmental deficits in the acquisition of writing skills (developmental dysgraphias) are common and have significant consequences, yet these deficits have received relatively little attention from researchers. We offer a framework for studying developmental dysgraphias (including both spelling and handwriting deficits), arguing that research should be grounded in theories describing normal cognitive writing mechanisms and the acquisition of these mechanisms. We survey the current state of knowledge concerning developmental dysgraphia, discussing potential proximal and distal causes...
September 14, 2017: Cognitive Neuropsychology
https://www.readbyqxmd.com/read/28891745/motor-control-of-handwriting-in-the-developing-brain-a-review
#7
Sarah Palmis, Jeremy Danna, Jean-Luc Velay, Marieke Longcamp
This review focuses on the acquisition of writing motor aspects in adults, and in 5-to 12-year-old children without learning disabilities. We first describe the behavioural aspects of adult writing and dominant models based on the notion of motor programs. We show that handwriting acquisition is characterized by the transition from reactive movements programmed stroke-by-stroke in younger children, to an automatic control of the whole trajectory when the motor programs are memorized at about 10 years old. Then, we describe the neural correlates of adult writing, and the changes that could occur with learning during childhood...
September 11, 2017: Cognitive Neuropsychology
https://www.readbyqxmd.com/read/28889870/the-use-of-handwriting-examinations-beyond-the-traditional-court-purpose
#8
REVIEW
Anna Agius, Kylie Jones, Rochelle Epple, Marie Morelato, Sébastien Moret, Scott Chadwick, Claude Roux
Traditionally, forensic science has predominantly focused its resources and objectives on addressing court related questions. However, this view restricts the contribution of forensic science to one function and results in lost opportunities as investigative and intelligence roles are often overlooked. A change of perspective and expansion of the contributions of forensic science is required to take advantage of the benefits of abductive and inductive thought processes throughout the investigative and intelligence functions...
September 2017: Science & Justice: Journal of the Forensic Science Society
https://www.readbyqxmd.com/read/28887079/measuring-the-validation-of-assessing-the-non-dominant-hand-function-by-alsfrs-r-in-chinese-als-patients
#9
REVIEW
Fangfang Hu, Jiaoting Jin, Rui Jia, Li Xiang, Huaguang Qi, Xing Zhao, Jingxia Dang
ALSFRS-r is a widely accepted rating scale for measuring the global function of Amyotrophic Lateral Sclerosis (ALS) patients, but we found some limitations of ALSFRS-r in assessing the function of non-dominant hand in Chinese ALS patients. We reviewed 95 ALS patients who expressed upper-limb symptoms at first visit and analyzed the ALSFRS-r score and subscale. In both upper limb involved patients, the ALSFRS-r had no difference between dominant-hand and non-dominant-hand onset groups (39.15±5.55 vs 38.0±5...
September 5, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28869946/stereotactic-radiosurgery-for-intractable-tremor-dominant-parkinson-disease-a-retrospective-analysis
#10
Sudesh S Raju, Ajay Niranjan, Edward A Monaco Iii, John C Flickinger, L Dade Lunsford
OBJECTIVE: The purpose of this study was to retrospectively analyze the outcomes of stereotactic radiosurgery for patients suffering from medically refractory Parkinson disease (PD) tremor. METHODS: We retrospectively studied the outcomes of 33 patients who were treated with gamma knife thalamotomy (GKT) over a 19-year period. Twelve patients were ≥80 years. A median dose of 140 Gy (range, 130-150 Gy) was delivered to the nucleus ventralis intermedius through a single 4-mm isocenter...
September 2, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28844041/how-to-use-pen-and-paper-tasks-to-aid-tremor-diagnosis-in-the-clinic
#11
EDITORIAL
Jane Alty, Jeremy Cosgrove, Deborah Thorpe, Peter Kempster
When a patient presents with tremor, it can be useful to perform a few simple pen and paper tests. In this article, we explain how to maximise the value of handwriting and of drawing Archimedes spirals and straight lines as clinical assessments. These tasks take a matter of seconds to complete but provide a wealth of information that supplements the standard physical examination. They aid the diagnosis of a tremor disorder and can contribute to its longitudinal monitoring. Watching the patient's upper limb while they write and draw may reveal abnormalities such as bradykinesia, dystonic posturing and distractibility...
August 26, 2017: Practical Neurology
https://www.readbyqxmd.com/read/28802160/the-computerized-perceptual-motor-skills-assessment-a-new-visual-perceptual-motor-skills-evaluation-tool-for-children-in-early-elementary-grades
#12
Tsu-Hsin Howe, Hao-Ling Chen, Candy Chieh Lee, Ying-Dar Chen, Tien-Ni Wang
Visual perceptual motor skills have been proposed as underlying courses of handwriting difficulties. However, there is no evaluation tool currently available to assess these skills comprehensively and to serve as a sensitive measure. The purpose of this study was to validate the Computerized Perceptual Motor Skills Assessment (CPMSA), a newly developed evaluation tool for children in early elementary grades. Its test-retest reliability, concurrent validity, discriminant validity, and responsiveness were examined in 43 typically developing children and 26 children with handwriting difficulty...
August 9, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28767370/lle-score-a-new-filter-based-unsupervised-feature-selection-method-based-on-nonlinear-manifold-embedding-and-its-application-to-image-recognition
#13
Chao Yao, Ya-Feng Liu, Bo Jiang, Jungong Han, Junwei Han
The task of feature selection is to find the most representative features from the original high-dimensional data. Because of the absence of the information of class labels, selecting the appropriate features in unsupervised learning scenarios is much harder than that in supervised scenarios. In this paper, we investigate the potential of Locally Linear Embedding (LLE), which is a popular manifold learning method, in feature selection task. It is straightforward to apply the idea of LLE to the graphpreserving feature selection framework...
July 28, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28767212/drawn-on-paper-a-reproducible-humidity-sensitive-device-by-handwriting
#14
Hongran Zhao, Tong Zhang, Rongrong Qi, Jianxun Dai, Sen Liu, Teng Fei
This article describes the development of a kind of full carbon-based humidity sensor fabricated on the paper substrate by handwriting. The electrodes were written by commercial pencils, and the sensitive layer was drawn with an oxidized multiwalled carbon nanotubes (o-MWCNTs) ink marker. The resultant devices exhibit good reproducibility and stability during the dynamic measurement. The response of the optimized paper-based sensor exhibits about five times higher than sensors fabricated on the ceramic substrate, which is owing to the hydrophilic property of the paper substrate...
August 9, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28750258/myoelectronic-signal-based-methodology-for-the-analysis-of-handwritten-signatures
#15
Cristina Carmona-Duarte, Rafael de Torres-Peralta, Moises Diaz, Miguel A Ferrer, Marcos Martin-Rincon
With the overall aim of improving the synthesis of handwritten signatures, we have studied how muscle activation depends on handwriting style for both text and flourish. Surface electromyographic (EMG) signals from a set of twelve arm and trunk muscles were recorded in synchronization with handwriting produced on a digital Tablet. Correlations between these EMG signals and handwritten trajectory signals were analyzed so as to define the sequence of muscles activated during the different parts of the signature...
July 24, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28718970/activation-of-semantic-information-at-the-sublexical-level-during-handwriting-production-evidence-from-inhibition-effects-of-chinese-semantic-radicals-in-the-picture-word-interference-paradigm
#16
Xuqian Chen, Yuanlan Liao, Xianzhe Chen
Using a non-alphabetic language (e.g., Chinese), the present study tested a novel view that semantic information at the sublexical level should be activated during handwriting production. Over 80% of Chinese characters are phonograms, in which semantic radicals represent category information (e.g., 'chair,' 'peach,' 'orange' are related to plants) while phonetic radicals represent phonetic information (e.g., 'wolf,' 'brightness,' 'male,' are all pronounced /lang/). Under different semantic category conditions at the lexical level (semantically related in Experiment 1; semantically unrelated in Experiment 2), the orthographic relatedness and semantic relatedness of semantic radicals in the picture name and its distractor were manipulated under different SOAs (i...
August 2017: Scandinavian Journal of Psychology
https://www.readbyqxmd.com/read/28717141/children-s-first-handwriting-productions-show-a-rhythmic-structure
#17
Elena Pagliarini, Lisa Scocchia, Mirta Vernice, Marina Zoppello, Umberto Balottin, Sana Bouamama, Maria Teresa Guasti, Natale Stucchi
Although much research has been concerned with the development of kinematic aspects of handwriting, little is known about the development along with age of two principles that govern its rhythmic organization: Homothety and Isochrony. Homothety states that the ratio between the durations of the single motor events composing a motor act remains invariant and independent from the total duration of the movement. Isochrony refers to the proportional relationship between the speed of movement execution and the length of its trajectory...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28689295/inhibitory-rtms-applied-on-somatosensory-cortex-in-wilson-s-disease-patients-with-hand-dystonia
#18
Pierre Lozeron, Aurélia Poujois, Elodie Meppiel, Sana Masmoudi, Thierry Peron Magnan, Eric Vicaut, Emmanuel Houdart, Jean-Pierre Guichard, Jean-Marc Trocello, France Woimant, Nathalie Kubis
Hand dystonia is a common complication of Wilson's disease (WD), responsible for handwriting difficulties and disability. Alteration of sensorimotor integration and overactivity of the somatosensory cortex have been demonstrated in dystonia. This study investigated the immediate after effect of an inhibitory repetitive transcranial magnetic stimulation (rTMS) applied over the somatosensory cortex on the writing function in WD patients with hand dystonia. We performed a pilot prospective randomized double-blind sham-controlled crossover rTMS study...
July 8, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28680652/validity-and-reliability-of-a-pilot-scale-for-assessment-of-multiple-system-atrophy-symptoms
#19
Masaaki Matsushima, Ichiro Yabe, Ikuko Takahashi, Makoto Hirotani, Takahiro Kano, Kazuhiro Horiuchi, Hideki Houzen, Hidenao Sasaki
BACKGROUND: Multiple system atrophy (MSA) is a rare progressive neurodegenerative disorder for which brief yet sensitive scale is required in order for use in clinical trials and general screening. We previously compared several scales for the assessment of MSA symptoms and devised an eight-item pilot scale with large standardized response mean [handwriting, finger taps, transfers, standing with feet together, turning trunk, turning 360°, gait, body sway]. The aim of the present study is to investigate the validity and reliability of a simple pilot scale for assessment of multiple system atrophy symptoms...
2017: Cerebellum & Ataxias
https://www.readbyqxmd.com/read/28670621/changes-in-dti-diffusivity-and-fmri-connectivity-cluster-coefficients-for-students-with-and-without-specific-learning-disabilities-in-written-language-brain-s-response-to-writing-instruction
#20
Todd L Richards, Virginia W Berninger, Kevin J Yagle, Robert D Abbott, Daniel J Peterson
Before and after computerized writing instruction, participants completed assessment with normed measures and DTI and fMRI connectivity scanning. Evidence-based differential diagnosis was used at time 1 to assign them to diagnostic groups: typical oral and written language (n=6), dysgraphia (impaired handwriting, n=10), dyslexia (impaired word spelling and reading, n=20), and OWL LD (impaired syntax construction, n=6). The instruction was aimed at subword letter writing, word spelling, and syntax composing...
April 2017: Journal of Nature and Science
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