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Verk
Global Burden of Cardiovascular Diseases and Risks, 1990-2022
(2023-12-19) Global Burden of Cardiovascular Diseases and Risks Collaborators; Department of Psychology
Verk
Sensorimotor recalibration of postural control strategies occurs after whole body vibration
(2023-12) Rigoni, Isotta; Degano, Giulio; Hassan, Mahmoud; Fratini, Antonio
Efficient postural control results from an effective interplay between sensory feedbacks integration and muscle modulation and can be affected by ageing and neuromuscular injuries. With this study, we investigated the effect of whole-body vibratory stimulation on postural control strategies employed to maintain an upright posture. We explored both physiological and posturography metrics, through corticomuscular and intramuscular coherence, and muscle networks analyses. The stimulation disrupts balance in the short term, but leads to a greater contribution of cortical activity, necessary to modulate muscle activation via the formation of (new) synergies. We also observed a reconfiguration of muscle recruitment patterns that returned to pre-stimulation levels after few minutes, accompanied by a slight improvement of balance in the anterior–posterior direction. Our results suggest that, in the context of postural control, appropriate mechanical stimulation is capable of triggering a recalibration of the sensorimotor set and might offer new perspectives for motor re-education.
Verk
Differences between hemispheres and in saccade latency regarding volleyball athletes and non-athletes during saccadic eye movements : an analysis using EEG
(2023-10-18) Vicente, Renan; Bittencourt, Juliana; Costa, Élida; Nicoliche, Eduardo; Gongora, Mariana; Giacomo, Jessé Di; Bastos, Victor Hugo; Teixeira, Silmar; Orsini, Marco; Budde, Henning; Cagy, Mauricio; Velasques, Bruna; Ribeiro, Pedro
Background The saccadic eye movement is responsible for providing focus to a visual object of interest to the retina. In sports like volleyball, identifying relevant targets quickly is essential to a masterful performance. The training improves cortical regions underlying saccadic action, enabling more automated processing in athletes. Objective We investigated changes in the latency during the saccadic eye movement and the absolute theta power on the frontal and prefrontal cortices during the execution of the saccadic eye movement task in volleyball athletes and non-athletes. We hypothesized that the saccade latency and theta power would be lower due to training and perceptual-cognitive enhancement in volleyball players. Methods We recruited 30 healthy volunteers: 15 volleyball athletes (11 men and 4 women; mean age: 15.08 1.06 years) and 15 non-athletes (5 men and 10 women; mean age: 18.00 1.46 years). All tasks were performed simultaneously with electroencephalography signal recording. Results The latency of the saccadic eye movement presented a significant difference between the groups; a shorter time was observed among the athletes, associated with the players’ superiority in terms of attention level. During the experiment, the athletes observed a decrease in absolute theta power compared to non-athletes on the electrodes of each frontal and prefrontal area. Conclusion In the present study, we observed the behavior of reaction time and absolute theta power in athletes and non-athletes during a saccadic movement task. Our findings corroborate the premise of cognitive improvement, mainly due to the reduction of saccadic latency and lower beta power, validating the neural efficiency hypothesis.
Verk
Sick and tired of being sick and tired! : What to do about fatigue associated with cancer and its treatment.
(2021) Fox, Rina S.; Wu, Lisa Maria; Department of Psychology
Verk
Editorial : Sleep and circadian rhythms in cancer patients and their relationship with quality of life
(2022-11-28) Perrier, Joy; Giffard, Bénédicte; Wu, Lisa M.; Savard, Josée; Amidi, Ali; Department of Psychology

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