The INSPEC now detects REM perfectly on when the face is sideways, with no false positives from head movement. I slept for 2 hours before this session started, which is why the first REM episode starts so early.
Recent firmware updates that improve REM detection:
- Each eye has its own detection region, so it still works with one eye in the pillow like in the minute above.
- Slow head movement and head rocking from breathing patterns are also filtered out.
- False faces found in the pillow and bedding with patterns are ignored.
- Eye frames are compared with frames from 250 ms earlier, which works better for picking up small movements under closed eyelids.
- A single movement no longer counts on its own. Another has to follow within 2.5 seconds, which filters out artifacts from breathing.
Firmware updates can now also be installed from the app over Bluetooth.
Download entry as Lucid Scribe Data (LSD) (3.1 MB).
