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Article History

Received: 14 April 2025

Accepted: 26 October 2025

First Online: 15 December 2025

Declarations

Ethics approval: All procedures were in accordance with the national ethical standards on human experimentation and with the Declaration of Helsinki of 1975, as revised in 2008. The study was in full accordance with the ethical guidelines of the University of Bamberg and was approved by an umbrella evaluation for psychophysical testing of the university ethics committee (Ethikrat) on 18 August 2017.

Consent to participate: All participants in this study provided explicit, informed consent to voluntarily participate. Before involvement, each participant received detailed information about the study's purpose, procedures, potential risks, and benefits.

Consent for publication: All data collected in this study have been fully anonymized to ensure the privacy and confidentiality of participants. Participants provided informed consent for the publication of anonymized data, acknowledging that no identifying information would be disclosed in any reports, publications, or presentations resulting from this research.

Conflicts of interest/Competing interests: All authors declare that they have no conflicts of interest.