ver1.3 (2023.6.23)

• Fixed a bug that gradient images were not displayed with MacOS / iOS / Safari
• Corrected GQ4 illustration in response to public comment that the EEG picture is not EEG-like and misleading
• Corrected the wording of the “Preface” to response to the release of the evidence book

ver1.2 (2023.2.14)

• Translated the entire book into English.
• Changed preface partially (added that it was originally published in Japanese, and deleted the last paragraph of the Japanese version due to space limitation).
• Moved Acknowledgements to p26 due to space limitation, which was on p2 in the Japanese version．
• Added details as Note where Japanese laws and systems are mentioned.
• Added references, corrected numbers as appropriate, these for due to the above changes.

ver1.1 (2022.10.21)

• Moved the following three items from the beginning of the guidebook to the end as supplementary information: the process of developing the guidebook, reasons for the selection of External Review Board members, and methods of COI management.
• Corrected the numbering of references.
• Added web URL for COI management policy and public comments in annotations.
• Corrected minor typographical errors.
• Changed some coloring in the text.

ver1.0 (2022.9.28)

• Obtained doi and published the first edition (https://doi.org/10.14991/KO52004001) in Japanese
• A part of the contents has been revised in response to public comments. (https://brains.link/en/braintech_guidebook/comment_answer)
• The Guidebook development process and reasons for the selection of External Review Board members are added at the beginning of the Guidebook.

ver0.10 (2022.08.01)

• A draft released for public comment