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Purpose: Greater fear of falling (FOF) is associated with an increased risk of falling in patients aged 65 and older. This study aims to assess the impact of physiotherapy on FOF in older patients and investigates the feasibility of such an intervention in the emergency department (ED) setting., Methods: All patients aged 65 or older, who presented to the ED of the University Hospital Basel after a fall between January 2022 and June 2023 were screened for inclusion. Participants were assigned to an intervention or control group depending on the randomized presence or absence of a physiotherapist at inclusion. Both groups received the same fall prevention booklet. Physiotherapists instructed and performed exercises with patients in the intervention group. The primary outcome was the difference in FOF between groups 7 days post inclusion, assessed by short Falls Efficacy Scale International (sFES-I). Secondary outcomes included feasibility, overall reduction of FOF, patient satisfaction, the occurrence of falls post inclusion and the use of medical resources., Results: Of the 1204 patients screened for inclusion, 104 older adults with a recent fall were enrolled (intervention: n = 44, control: n = 60); median age was 81 years and 59.1% were female. There was no between-group difference in FOF as measured by sFES-I within a week of inclusion (p = 0.663, effect size = 0.012 [95% confidence interval (CI) - 0.377 to 0.593]). Despite the intervention being deemed feasible from the physiotherapist's perspective, the study encountered challenges, such as low recruitment (with the planned sample size not being reached) and a notable dropout rate before the first follow-up., Conclusion: A physiotherapy intervention in the ED showed no improvement in FOF when compared to a control group., Trial Registration: Trial registration number and date NCT05156944, 01.12.2021., Competing Interests: Declarations Conflict of interest The authors have no relevant financial or non-financial interests to disclose. Ethical approval This study was performed in line with the principles of the Declaration of Helsinki. Approval was granted by the local ethics committee (N° 2021-02165, 07.12.2021). Consent to participate Informed consent was obtained from all individual participants included in the study., (© 2024. The Author(s).)

In neuroscience, time-frequency analysis is widely used to investigate brain rhythms in brain recordings. In event-related protocols, it is applied to quantify how the brain responds to a stimulation repeated over many trials. We here focus on two common measures: the power of the transform for each single trial averaged across trials, avgPOW; and the power of the transform of the average evoked potential, POWavg. We investigate the influence of additive noise on these two measures. We quantify the expected effect using theoretical calculations, simulated data and experimental brain recordings. We also consider the case of color noise. We extract the main factors influencing the effect of noise on POWavg and avgPOW, such as the noise variance, the number of trials, the sampling rate, the type of noise, the type of time-frequency transform and the frequency of interest. When dealing with time-frequency analysis, the impact of noise on the neuroscientist's work can drastically vary depending on these factors. The present results should help researchers improve their understanding and interpretation of time-frequency diagrams, as well as optimize their experimental designs and analyses based on their neuroscientific question., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Author(s).)