**5. Conclusions**

In this review, a holistic experience using synesthesia acquired by people with visual impairment was provided to convey the meaning and contents of the work through rich multi-sensory appreciation. In addition, pictograms, temperatures, scents, music, and new forms incorporating them were explored to find a new way of conveying colors in artworks to the visually impaired. A method that allows people with visual impairments to engage in artwork using a variety of senses, including touch and sound, helps them to appreciate artwork at a deeper level than can be achieved with hearing or touch alone. The development of such art appreciation aids for the visually impaired will ultimately improve their cultural enjoyment and strengthen their access to culture and the arts.

The development of this new concept of post-visual art appreciation aids ultimately expands opportunities for the non-visually impaired as well as the visually impaired to enjoy works of art at the level of weak synesthesia and breaks down the boundaries between the disabled and the non-disabled in the field of culture and arts. It is made through continuous efforts to enhance accessibility. In addition, the developed multisensory expression and delivery tool can be used as an educational tool to increase product and artwork accessibility and usability through multi-modal interaction. Schifferstein [151] observed that vivid images occur in all sensory modalities. The quality of some types of sensory images tends to be better (e.g., vision, audition) than of others (e.g., smell and taste) for sighted people. The quality of visual and auditory images did not differ significantly. Therefore, training these multi-sensory experiences introduced in this paper may lead to more vivid visual imageries or seeing with the mind's eye.

**Author Contributions:** Conceptualization: J.D.C.; methodology: J.D.C.; validation: J.D.C.; formal analysis: J.D.C.; investigation: J.D.C.; resources: J.D.C.; data curation: J.D.C.; writing—original draft preparation: J.D.C.; writing—review and editing: J.D.C.; visualization: J.D.C.; supervision: J.D.C.; project administration and funding acquisition: J.D.C. The author has read and agreed to the published version of the manuscript.

**Funding:** This research was funded by the Science Technology and Humanity Converging Research Program of the National Research Foundation of Korea, gran<sup>t</sup> number 2018M3C1B6061353.

**Conflicts of Interest:** The author declares that he has no conflict of interest.
