Science topics: MedicineSleep MedicineActigraphy
Actigraphy - Science method
The measurement and recording of MOTOR ACTIVITY to assess rest/activity cycles.
Questions related to Actigraphy
We plan to monitor stroke patients' activity using the Philips Actiwatch 2 Activity monitor. Would it be better to fit the monitor on patients' dominant (unaffected) or non-dominant (affected) wrists? Any relevant papers about this?
Our lab is looking into actigraphy devices for sleep study including insomnia and metabolic measurements such as heart rate. Are there any well-validated devices, wearable for 7+ days and with easily exportable data that would be applicable in this setting?
I have an Excel spreadsheet with built-in macro to calculate sleep/wake based on 60s epochs that was provided by the supplier of my Actigraph devices but I am unsure of which algorithm is used and I wish to compare with another.
I need a reliable actigraphy for a sleep deprivation study. Indeed participants should stay awake in the night and I want to monitor if they dont fall sleep. For this purpose I want to use actigraphy. Please suggest some scientifically valid brands.
Is there any validation about the physical activity in the case of wrist actigraphy?
I want to measure sleep and physical activity data with wrist actigraphy
I am looking for suggestions regarding ways to import PDF or other types of data (from reports, such as sleep study report or actigraphy reports) into excel so that they could be uploaded directly in Redcap? I am looking to minimize manual data entry. I have looked at Monarch software but that didn't help me. Thanks
I need to analyse the actigraphy data from MESA sleep exam :
https://sleepdata.org/datasets/mesa . For example find sleep-wakeup events
and amount of movement during sleep . Can anyone suggest how this can be
Thanks for help
I have Actiwatch 2 and Actiwatch Specrum Pro watches to be worn by 6-17 year olds for a study. I have mixed messages from literature in relation to which wrist the watch should be worn.
I am preprocessing actigraphy data coming from disorders of consciousness patients. For data preprocessing I will have to cut out some segmets of my long-term actigraphy data because the movement had an external source (e.g. a nurse). This will lead to missing values in my data.
Does anybody have a suggestion how to replace these missing values best?
i am searching for an online database that provides multi-sensory data of sleep recordings (polysomnography data). It is important that the sensor data includes data of an accelerometer (in the best case wrist worn) as well as an EEG based hypnogram to compare the acceleration to.
Thanks in advance,
Accelerometer data in 5sec epochs, and student on-task behavior in 30-sec Momentary Time Sampling, along with 30-sec teacher teaching style also. Having difficulty determining what the actual 0-149 = sedentary, 150-499 = light, etc. really means? Is that for the steps that Actilife says, or is that based off the vertical axis (axis 1)? Probably need to make all data points at the 30-sec to be more unison, but thoughts on how to analyze the thresholds?
I need instrument to record actigraphy
I have rest-activity data collected using actigraphy, and I am hoping to extract non-parametric variables (interdaily stability, intradaily variability, relative amplitude). I have seen open source R packages and other software for cosinor and Fourier analyses, but not for NPCRA. Any suggestions would be greatly appreciated!
One of my currently assigned project is to develop a system which can assess a person in bettering sleep quality which needs to identify the sleep stages. Currently there are commercial products available like FitBit and Jawbone UP. As per my thinking and research they are using tri-axis accelerometer actigraphy while classifying the actigraphy using polysomnography. But to have a polysomnography classified data is a major hurdle in doing this project. Can anyone suggest me an alternative to proceed with this project? My limitations are that I have to stuck with an accelerometer and pressure sensor.
How can one ensure the quality and authenticity of data entered in the sleep logs (maintained for at least 14 days) especially for those who are not literate like many senior citizens? Is there any other tool like sleep log/sleep diary to elicit sleep patterns (except actigraphy and polysomnography) in a community based survey?
I have a few sets of GT3X+ that I am using to measure levels of physical activity of adolescents. The Actilife software that I have which supports these data is ActiLife 6. Has anyone used these accelerometers to calculate energy expenditure and also to compare the data obtained with a subjective measure like a questionnaire for instance?Thanks
Our lab is looking into actigraphy devices for sleep studies and developing countries. What do you use and why?
I have completed a study with older adults in care homes monitoring sleep and light patterns using actigraphy. I have a mixed set of outputs - some with a regular sleep cycle and others more disrupted patterns. I'm trying to best understand sleep quality and the most relevant variables to extract from the software (Philips respironic actiwatch spectrum). I'm not sure if setting a custom interval would help best or if the pattern shown should determine how to look at the stats. Any thoughts of good references welcomed.
I'm wondering if anyone has developed a script to run in the R statistical package that can validate data files (i.e. sufficient wear time), clean files (remove non-wear time etc.) and produce the usual summary estimates (i.e. cpm, mins of mvpa etc.)?