Predators track prey while navigating complex environments. A new study in freely moving ferrets reveals that, during visual pursuit, saccadic eye movements optimize optic flow patterns, rather than track targets.
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Visual pursuit: Coordinated eye and head movements guide navigation over fixation.
Curr Biol
March 2025
Department of Physiology and Biophysics, University of Colorado School of Medicine, Aurora, CO 80045, USA. Electronic address:
Predators track prey while navigating complex environments. A new study in freely moving ferrets reveals that, during visual pursuit, saccadic eye movements optimize optic flow patterns, rather than track targets.
View Article and Find Full Text PDFUnderstanding diagnostic delays among newly diagnosed breast cancer patients at a tertiary cancer care center in a low-middle-income country like Bangladesh.
Medicine (Baltimore)
March 2025
Department of Public Health, Atish Dipankar University of Science and Technology, Dhaka, Bangladesh.
Breast cancer poses a significant health challenge for women globally, with survival rates varying widely between and within countries. The correlation between delayed diagnosis and lower survival rates is well-established, emphasizing the importance of addressing barriers to early presentation to improve survival rates in low-middle-income countries like Bangladesh. The objective of the study was to assess how often breast cancer patients present late, pinpoint the underlying reasons for the delay, and examine any potential links between delayed presentation and socio-demographic factors in our context.
View Article and Find Full Text PDFCorrelation between non-motor symptoms and eye movements in Parkinson's disease patients.
Neurol Sci
March 2025
Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia.
Introduction: Parkinson's disease (PD) presents with a variety of non-motor symptoms such as sleep disorders, hyposmia, pain, cognitive dysfunction, neuropsychiatric and autonomic symptoms. One of the most neglected motor symptoms is the impairment of eye movements, which occurs in 75% of PD patients. The aim of our study was to investigate the relationship between the severity of non-motor symptoms and the impairment of different types of eye movements.
View Article and Find Full Text PDFSpatio-Temporal Decoding of the Navon Task Challenges Rigid Hemispheric Asymmetries in Global-Local Processing.
Psychophysiology
March 2025
Centre for Cognitive Neuroscience, University of Salzburg, Salzburg, Austria.
Functional hemispheric asymmetries are considered a key factor in intra- and interindividual variability of global precedence effects. However, research in this area is permeated by a considerable number of inconsistent findings which may stem from significant methodological limitations. In pursuit of a more detailed model of global-local processing by combining both high temporal and spatial resolution, we employed Multivariate Pattern Analysis (MVPA) on Magnetoencephalography (MEG) recordings from 63 participants performing a divided visual field, divided attention Navon paradigm.
View Article and Find Full Text PDFTeleoperator Coupling Dynamics Impact Human Motor Control Across Pursuit Tracking Speeds.
IEEE Trans Haptics
February 2025
Robotic teleoperators introduce novel electromechanical dynamics between the user and the environment. While considerable effort has focused on minimizing these dynamics, we lack a robust understanding of their impact on user task performance across the range of human motor control ability. Here, we utilize a 1-DoF teleoperator testbed with interchangeable mechanical and electromechanical couplings between the leader and follower to investigate to what extent, if any, the dynamics of the teleoperator influence performance in a visual-motor pursuit tracking task.
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