EN \ NL \ FR
Current Wings Quest 116
Interview!
print ShareShare 

Detecting sleep phase from motion sensors

Post new topic Reply to topic
Page 1 of 1

Author  Message 
Susan_Y
Dream Deity
Dream Deity
Posts: 789
Joined: 12 Aug 2014
Last Visit: 22 Oct 2017
 
Detecting sleep phase from motion sensors
PostPosted: Mon 23 Jan, 2017  Reply with quote

There are are number of devices that claim to be able to detect which phase of sleep you're in, and then trigger lucidity by playing some recorded audio.

I was thinking about making one, and as part of tbe literature search I came across this paper:

Actigraphy detection of REM sleep based on respiratory rate estimation, by Ken Kawamoto and Hiroyuki Kuriyama.

According to this article, detecting whether you're asleep or not works fairly well, but detecting whether you're in REM sleep is harder. What they did was to use the motion sensors to measure breathing in and out, and then use the change in breathing rate to detect the onset of REM sleep.

I thought this paper was interesting because it gives a reason why some of the devices that are on the market won't work very well.


back to top
DTDownUnder
Sunset Chaser
Somniologist
DTDownUnder has successfully completed an LD4all Quest!
20
Posts: 234
Joined: 06 Feb 2016
Last Visit: 17 Oct 2017
LD count: 90ish
Location: Outside on the roof, Dancing under the stars
 
PostPosted: Mon 23 Jan, 2017  Reply with quote

I have found success with using Heart rate monitors to judge sleep patterns. I recorded my HR for a week while I slept, along with a movement sensor (my fitness watch). I found that my HR consistently changes while I sleep. My HR dropped down as low as 30bpm during deep sleep, ( normal for me, big hearts run in my family, you should see my brothers waking bpm, it hangs around 32-34!) , and during light sleep, it would raise to about 60-70 bpm. I also found that whenever I had an exciting dream, my pulse would raise to the 80-90 range. I often considered programing something that would signal me when my HR got over a certain level, probebly 70bpm, but I never got around to it.

A couple years ago I did find some sleep tracking apps that monitored movement and would then play a sound during the right sleep phase to trigger a LD, but when I read the instructions, it said "Place phone on mattress during sleep", I slept on the floor at the time, so I forgot about that idea. ( I now sleep in a hammock, so I guess I could try those apps again...)



Link to My DJ: ld4all.com
back to top
Display posts from previous:
Post new topic Reply to topic
Page 1 of 1


print   ShareShare 

All times are GMT + 2 Hours
Jump to:  

LD4all ~ spreading the art and knowledge of lucid dreaming online since 1996 ~
created and copyright by pasQuale. All rights reserved.
Powered by phpBB © 2001,2005 phpBB Group ~