Seat-to-Head Transmissibility Responses of Seated Human Body Coupled with Visco-Elastic Seats
Round 1
Reviewer 1 Report
1) The vibration frequencies within the studied range may coincide with the frequencies of the rhythms of the cerebrum. It seems to be necessary to investigate the influence of these frequencies.
2) The authors must provide DOI indexes to all references, if exist.
Author Response
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Author Response File: 
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Reviewer 2 Report
Main comments
The paper presents a study of the transmission of vibration through seats and through the human body. The effect of various factors has been investigated including the presence of a back support and vibration magnitude. A clear and well-presented paper. I offer my comments on the manuscript.
The line numbers below correspond to those on the draft manuscript.
Comments
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Change “… Padan …” to “… Paddan …”. Reference ‘Paddan and Griffin 1988’ does not appear in the references list.
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The vibration magnitude should be presented as ‘m/s2 r.m.s.’. This applies throughout the manuscript.
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Label ‘c’ is missing from the figure.
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This section discusses the effect of back support on the transmission of vertical axis seat vibration to vertical axis at the head, and vertical axis seat vibration to fore-and-aft axis at the head. This is also presented in Griffin (1990, ‘Handbook of Human Vibration’) chapter 8. A reference and discussion of the two studies is required.
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Reference ‘Paddan and Griffin, 1988’ does not appear in the references list.
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Reference ‘Kitazaki and Griffin (1998)’ is dated 1997 in the references list.
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Reference ‘Kitazaki and Griffin (1998)’ is dated 1997 in the references list.
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Author Response
Thanks for your review!
Please check the attached file.
Author Response File: Author Response.docx
Reviewer 3 Report
This is an original and very thorough article investigating seat to head transmissibility (STHT). STHT is not a research area I have conducted work in so several of my comments a geared to explaining this work to readers, who like me, may not be experienced in the area.
In the introduction, I think you need to make it clear on why this work is being done, I have a comment in the introduction that addresses this.
In the methods, I think you need reiterate and explain why a rigid seat is used and why sitting without a backrest is tested, as these two seating scenarios do not occur in vehicles or heavy equipment. Finally, please explain why a white noise vibration signal is used rather than real WBV data from a vehicle. The random signal is artificial but must be needed for experimental control purposes.
The paper is long and needs to be shortened in my opinion, I am not sure if the journal has limits. The conclusion succinctly summarize what was identified in the study and the results and discussion should succinctly identify the same important findings. Currently, all finding are presented in the result and I feel the most important finding should be discussed. The discussion is long (~3000 words and I think it should be cut in half. I am used to research papers with around 7 tables and figures total and a limit of 4500 words. In other words, best when the research is concise.
Please see the specific comments in the PDF.
Comments for author File: Comments.zip
Author Response
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Please check the attached file.
Author Response File: Author Response.docx
