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Graphomotor and Handwriting Disabilities Rating Scale (GHDRS): towards complex and objective assessment
(Australian Journal of Learning Difficulties. 2024 Mar;29(1):2024, 2024-03)Graphomotor and handwriting disabilities (GD and HD, respectively) could significantly reduce children’s quality of life. Effective remediation depends on proper diagnosis; however, current approaches ... -
Computerized assessment of handwriting in de novo Parkinson’s disease: a kinematic study
(Parkinsonism & Related Disorders. 2024 Sep;126:107072, 2024-09)Introduction: Dysgraphia, a recognized PD motor symptom, lacks effective clinical assessment. Current evaluation relies on motor assessment scales. Computational methods introduced over the past decade ... -
Computer-aided diagnosis of graphomotor difficulties utilizing direction-based fractional order derivatives
(Cognitive Computation. 2024 Nov;17(13), 2024-11)Children who do not sufficiently develop graphomotor skills essential for handwriting often develop graphomotor disabilities (GD), impacting the self-esteem and academic performance of the individual. ... -
Effects of acute beetroot juice intake on performance, maximal oxygen uptake, and ventilatory efficiency in well-trained master rowers: a randomized, double-blinded crossover study
(Journal of the International Society of Sports Nutrition. 2024;21(1):2373170, 2024)Background: Beetroot juice (BRJ) intake has been considereda practical nutritional strategy among well-trained athletes. Thisstudy aimed to assess the effects of BRJ intake on performance,cardiorespiratory ... -
Cognitive impairment detection based on frontal camera scene while performing handwriting tasks
(Cognitive Computation. 2024;16:1004-1021, 2024)Diagnosing cognitive impairment is an ongoing field of research especially in the elderly. Assessing the health status of the elderly can be a complex process that requires both subjective and objective ... -
Online signature recognition: a biologically inspired feature vector splitting approach
(Cognitive Computation. 2024;16:265-277, 2024)This research introduces an innovative approach to explore the cognitive and biologically inspired underpinnings of feature vector splitting for analyzing the significance of different attributes in ... -
Discriminative power of handwriting and drawing features in depression
(International Journal of Neural Systems. 2024;34(2):2350069, 2024)This study contributes knowledge on the detection of depression through handwriting/drawing features, to identify quantitative and noninvasive indicators of the disorder for implementing algorithms for ... -
Analysis of gender differences in online handwriting signals for enhancing e-health and e-security applications
(Cognitive Computations. 2023;15:208-219, 2023)Handwriting is a complex perceptual–motor skill that is mastered around the age of 8. Although its computerized analysis has been utilized in many biometric and digital health applications, the possible ... -
A comparative study of in-air trajectories at short and long distances in online handwriting
(Cognitive Computation. 2017;9:712–720, 2017)Existing literature about online handwriting analysis to support pathology diagnosis has taken advantage of in-air trajectories. A similar situation occurred in biometric security applications where the ... -
Automatic analysis of Archimedes’ spiral for characterization of genetic essential tremor based on Shannon’s entropy and fractal dimension
(Entropy. 2018;20(7):531, 2018-07-16)Among neural disorders related to movement, essential tremor has the highest prevalence; in fact, it is twenty times more common than Parkinson’s disease. The drawing of the Archimedes’ spiral is the ... -
Quantitative analysis of relationship between hypokinetic dysarthria and the freezing of gait in Parkinson’s disease
(Cognitive Computation. 2018;10(6):1006-1018, 2018)Hypokinetic dysarthria (HD) and freezing of gait (FOG) are both axial symptoms that occur in patients with Parkinson’s disease (PD). It is assumed they have some common pathophysiological mechanisms and ... -
Changes in phonation and their relations with progress of Parkinson’s disease
(Applied Sciences. 2018;8(12):2339, 2018-11-22)Hypokinetic dysarthria, which is associated with Parkinson’s disease (PD), affects several speech dimensions, including phonation. Although the scientific community has dealt with a quantitative analysis ... -
Identification and monitoring of Parkinson’s disease dysgraphia based on fractional-order derivatives of online handwriting
(Applied Sciences. 2018;8(12):2566, 2018-12-11)Parkinson’s disease dysgraphia affects the majority of Parkinson’s disease (PD) patients and is the result of handwriting abnormalities mainly caused by motor dysfunctions. Several effective approaches ... -
Analysis of various fractional order derivatives approaches in assessment of graphomotor difficulties
(IEEE Access. 2020 Dec 4; 8:218234-218244, 2020-12-04)Graphomotor disabilities (GD) are present in up to 30% of school-aged children and are associated with several symptoms in the field of kinematics. Although the basic kinematic features such as velocity, ... -
Advanced parametrization of graphomotor difficulties in school-aged children
(IEEE Acces. 2020 Jun 17;8:112883-112897, 2020-06-17)School-aged children spend 31–60% of their time at school performing handwriting, which is a complex perceptual-motor skill composed of a coordinated combination of fine graphomotor movements. As up to ... -
Handwriting biometrics: applications and future trends in e-security and e-health
(Cognitive Computation. 2020;12;940–953, 2020)Online handwritten analysis presents many applications in e-security, signature biometrics being the most popular but not the only one. Handwriting analysis also has an important set of applications in ... -
On the analysis of speech and disfluencies for automatic detection of Mild Cognitive Impairment
(Neural Computing and Applications. 2020;32:15761–15769, 2018-05-08)Alzheimer’s disease is characterized by a progressive and irreversible cognitive deterioration. In a previous stage, the so-called Mild Cognitive Impairment or cognitive loss appears. Nevertheless, this ... -
Comparison of CNN-learned vs. handcrafted features for detection of Parkinson's disease dysgraphia in a multilingual dataset
(Frontiers in Neuroinformatics. 2022;(16):877139, 2022)Parkinson’s disease dysgraphia (PDYS), one of the earliest signs of Parkinson’s disease (PD), has been researched as a promising biomarker of PD and as the target of a noninvasive and inexpensive ... -
Reliability and validity of the Polar V800 sports watch for estimating vertical jump height
(Journal of Sports Science and Medicine. 2021;(20):149-157, 2021)This study aimed to assess the reliability and validity of the Polar V800 to measure vertical jump height. Twenty-two physically active healthy men (age: 22.89 ± 4.23 years; body mass: 70.74 ± 8.04 kg; ... -
On handwriting pressure normalization for interoperability of different acquisition stylus
(IEEE Access. 2021 Jan 21;9:18443-18453, 2021-01-21)In this paper, we present a pressure characterization and normalization procedure for online handwritten acquisition. Normalization process has been tested in biometric recognition experiments (identification ...