- Does the introduction explain the objective of the research presented in the preprint?
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Yes
- The authors gave a broad overview of the subject with a logical flow, aligning with the study's objectives.
The objectives were stated in the last paragraph of the introduction and read as follows: "First, we aimed to expand on previous review studies by examining recent studies that shed light on the neural correlates of EG interventions in
aging, focusing on changes in the brain structure, functional networks and molecular markers.Second, we extended the range of our population of interest to include older adults with a neurocognitive disorder, assessing whether EG interventions impacted neural correlates relevant to these diseases."
- Are the methods well-suited for this research?
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Highly appropriate
- The authors used a structured search strategy guided by PRISMA guidelines and a PICO framework. This is appropriate for a systematic review, ensuring transparency and reproducibility while reducing bias.
- Are the conclusions supported by the data?
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Highly supported
- Are the data presentations, including visualizations, well-suited to represent the data?
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Highly appropriate and clear
- The data presentations and visualizatons were highly appropriate for a secondary study.
- How clearly do the authors discuss, explain, and interpret their findings and potential next steps for the research?
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Very clearly
- The findings were well-structured and organized into categories. The use of citations in the second figure is especially commendable.
- Is the preprint likely to advance academic knowledge?
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Highly likely
- Would it benefit from language editing?
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No
- While the paper does not require major rewriting, it would benefit from editing to improve the flow and readability.
For instance:
1. "Mixt reality": Introduction section, last line of second paragraph.
2. "CRUNCH hypothesis": The full meaning of the abbreviation was not given before its use.
- Would you recommend this preprint to others?
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Yes, but it needs to be improved
- Is it ready for attention from an editor, publisher or broader audience?
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Yes, after minor changes
- Kindly refer to the comment in the section on language editing.
Competing interests
The authors declare that they have no competing interests.