Research on the Application of the Dynamic Assisted Sleep Light to Smart Mobile Devices

Round 1

Reviewer 1 Report

The topic of the paper sounds promising; would the use of dynamic light be able to support human sleep? However, the paper from its structure and readability is not entirely clear what exactly has been studied and also what the results may tell us. 

Introduction: Not entirely clear what the research question and the aim was of your study - maybe highlight this a bit more in the last paragraph of your introduction section.

The method and results sections need major revisions, there are too many aspects unclear or not thoroughly explained in the text. Please have a look at the detailed comments in the attached document. 

In the discussion and conclusion it's important to inform the reader what we can learn from your study and if so how we can apply this in practice. 

 

Comments for author File: Comments.pdf

Author Response

Thank you for your review. The following reply is an amendment to the content of the article.

1. Line 132-134, ref[27-29] is the research result of our team.
2. Line 135-136, in order to understand the results of the research by ref[27-29] and apply its light control method to other devices, this article is to verify the effect of this light in other light source devices, and at the same time, it is hoped that there will be more development in different devices.
3. Line 160, “ experimental light source measurement equipment-如圖4-6。
4. 文章162-163行，Up to 40 measurement indexes are provided, such as CCT, CRI, CIE1931/1976, LUX, TLCI, etc.” Is the function provided by UPRtek MK350N, and it is also the equipment used for light source measurement.
5. Line 194, To provide readers with an understanding of the content of the typing test software designed in this study.
6. Line 198, Figure 9 Measurement As described in the article, the measurement method is ref.30-31, which is not the predicted value.
7. Line 209-210, Correcting readability.
8. Line 222, This paper studies the backlight of intelligent mobile devices, with the same title and introduction, in which lines 199 to 213 illustrate the setting and regulation of intelligent mobile devices in this study.
9. Line 228-229, The experimental sequence is arranged in the same order as the previous experimental method, and verified by non-random numbers, so as to avoid the unquantifiable experimental effect caused by changing the experimental method.
10. Line 240, After measurement, the tool library provided by CIE S 026 is used to calculate the results.
11. Line 243, Correcting readability.
12. Line 244, Explanation of supplementary questionnaire contents.
13. Line 256-257, Correcting readability.
14. Line 259, Figure 13 is a supplementary explanation.
15. Line 263, Modify the text description, and the tabular calculation results provide the tabular calculation results for CIE S 026.
16. Line 266, Modify the description of the title of Table 2.
17. Line 270, This study applies for recruiting experimental subjects through IRB, such as providing relevant contents at the end of the article; Revise the narrative mode of recruiters.
18. Line 277-278, Revise the subjects recruited in this experiment.
19. Line 284-286, Modify the narrative method of analysis to explain the statistical analysis of Kruskal-Wallis.
20. Line 343, Provide it to researchers and revise it in the article.
21. Line 348-349, Correct the readability and text errors of the article.
22. Line 422-426, Correcting readability.
23. Line 436-439, In this paper, it is shown that there are significant differences between dynamic color temperature and fixed color temperature in environmental statistics, but they are not two results.
24. Line 458 and 460, Correcting readability.
25. Line 524, Correcting readability.
26. The column classification of the analysis results is described in lines 233-243 of the article.
27. The wearing time and process of non-subjective physiological data measuring instruments are shown in the time flow chart of Figure 13.
28. Figure 25. As indicated in lines 433-435, there is no significant difference in the results.
29. 27. There is a significant difference between the results of the typing test and the results of the side-by-side test. As mentioned by the review, 508 lines in the article were revised to learning efficiency. Thanks to the guidance of the review committee.
30. Conclusion Some new articles provide future research directions and applications.

Author Response File: Author Response.pdf

Reviewer 2 Report

This manuscript proposed a dynamic sleep-assisting light to assist sleep by controlling the backlight device of the smart mobile device. Some notes could be improved on its manuscript :

In experiments, Equipment Biopac MP-150 is used for EEG and ECG measurement. Are wired electrodes used for measurement during experiments? Because the EEG and ECG signals are also used for sleep quality evaluation, how does the problem uncomfortable due to using wired electrodes take into account for brain wave and HRV analysis?

For brain wave analysis, Figures 20, 21,22,23 and 24,  the short description about (%) wave is unclear? What baseline is brain wave defined for analysis?  

In Figure 20, 21,22,23, and 24,  you mention brain wave is evaluated for about 60 minutes. How can we be sure that subject is  sleep during period? please give more description about this

About the dynamic color temperature in Figure 14, its sure that the color temperature changes in duration 60 seconds? What is color temperature change during 60 minutes experiments?

Reference on line 600-604, please re-checking

References published in the last five years need to be added.

Author Response

1. In experiments, Equipment Biopac MP-150 is used for EEG and ECG measurement. Are wired electrodes used for measurement during experiments? Because the EEG and ECG signals are also used for sleep quality evaluation, how does the problem uncomfortable due to using wired electrodes take into account for brain wave and HRV analysis?

Ans.

• In this study, wired electrodes were used for measurement.
• The experimental environments of the subjects in this study were all the same, and the sleep environment equipment was selected to provide more pillows for the subjects to choose, so as to conform to the subjects' daily sleep habits and reduce the discomfort caused by additional equipment.

 

2. For brain wave analysis, Figures 20, 21,22,23 and 24,  the short description about (%) wave is unclear?

Ans.

Make up in the chart.

 

3. What baseline is brain wave defined for analysis? 

Ans.

Central brain (Cz).

 

4. In Figure 20, 21,22,23, and 24,  you mention brain wave is evaluated for about 60 minutes. How can we be sure that subject is  sleep during period?

Ans.

In this study, it was temporarily impossible to directly analyze when to enter sleep, but the analysis and discussion were based on the measurement of non-subjective physiological information such as electroencephalogram energy, cardiac rhythm variation and sleep bracelet as well as the sleep questionnaire. In the sleep experiment, the changes of electroencephalogram Delta and Theta and the variation of cardiac rhythm variation were discussed. The statistically significant difference was taken as the gradual entry of sleep as a reference, and it was included in the comprehensive evaluation of sleep latency and sleep efficiency of sleep bracelet. Finally, the analysis and discussion of typing tasks after sleep were conducted.

 

5. About the dynamic color temperature in Figure 14, its sure that the color temperature changes in duration 60 seconds? What is color temperature change during 60 minutes experiments?

Ans.

The dynamic diagram 14 is a cycle every 60 seconds until the end of the experiment.

6. References published in the last five years need to be added.

Ans.

REF.27-29 is the PAPER published in the last five years.

Author Response File: Author Response.docx