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Journal of Clinical and
            Basic Psychosomatics                                                   Intervention through natural/digital art



            in the inactivation of blue visual pigments.  A review of   estimated that 613,000 people, or 1.45% of the population
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            lighting design for treating aging populations highlighted   aged 40 – 64, were experiencing social withdrawal. 32
            the  impact  of lighting on  psychophysiological aspects,   It is well-established that the risk of depression
            particularly its role in the consolidation of the sleep-wake   increases with age,  and two characteristics related to
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            circadian cycle, which is strongly related to psychiatric   the mental functions of senior citizens are often cited as
            well-being. 24,25  In particular, blue-enriched light has been   contributing  factors.  First,  in  the  normal  aging  process,
            shown to benefit older dementia patients.  Furthermore,   while cognitive function generally slows down, the ability
                                              26
            a number of studies on depression therapy have reported   to make analogies and process abstract topics tends to
            success with high-intensity, blue-enriched light for   remain intact. Aging adults also tend to make decisions
            depressed seniors. These studies concluded that lighting   based on “impressions” and “intuitions” rather than
            systems in patients’ homes could be modified to serve as   logical thinking. Theories of adult cognitive development
                                                   27
            mood enhancers for depressed elderly patients/  On the   typically distinguish between fluid abilities, which
            other hand, blue light-blocking treatment may be beneficial   require effortful processing at the time of assessment, and
            in the treatment of bipolar disorder.  Another study on the   crystallized abilities, which involve retrieving and applying
                                        28
            efficacy of blue-light therapy conducted a meta-analysis of   knowledge.  While fluid abilities, such as quick reactions,
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            randomized controlled trials examining the efficacy and   memorization, and problem-solving, tend to decline,
            safety of blue-light therapy for both seasonal and non-  crystallized abilities like knowledge and principles are
            seasonal major depressive disorder. This analysis found no   maintained.  For older individuals, it may be easier and
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            evidence of the efficacy of blue light compared to inactive   more effective to use stories with episodes to help them
            conditions in all age groups.  One reason for the lack   understand, rather than providing logical explanations.
                                    29
            of convergence in the results of these studies may be the   This tendency may explain why older people, who decorate
            extreme difficulty in establishing a method for diagnosing   their gardens with multiple illumination motifs, have an
            mental illnesses, such as depression and identifying the   affinity for illumination art.
            causes of these conditions.
                                                                 Second, if communication fluency decreases in seniors,
              The  key  difference  between  these  light  therapies  and   they may tend to stray from the topic or digress.  In
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            our lighting system is that our system combines artistic   such cases, it may be helpful to listen to them patiently,
            and entertaining qualities while also integrating the natural   gently correct their speech, and focus on the main points,
            environment. It features programming control of complex   using emotional expressions with which they are familiar
            and diverse light elements. As a result, we successfully   with  to  help  them  relax.  This  approach  may  prevent
            provided 97 senior home residents with a 2-month light   stress and promote comfort. It is highly likely that the
            therapy program, as shown  in  Figure  7, and achieved a   illumination in the garden in this study contributed to
            high level of satisfaction. Furthermore, we can assert that   stress relief for not only the senior residents but also the
            the program motivated the residents to engage with the   staff and visitors. Regarding individuals around seniors,
            outside world. In our previous research on indoor light   several characteristics are observed in elderly people
            entertainment in senior citizen homes, we used projection   with depression, a common background condition for
            mapping to create images  of natural environments such   social withdrawal. It is said that only 1/3 – 1/4 of elderly
            as  plants.  We found  that  this  approach  improved the   individuals show typical symptoms of depression that are
            motivation of senior residents, regardless of their cognitive   easy to diagnose. Because some symptoms are particularly
            level.  Previous research has also explored mechanisms   pronounced while others, such as low mood or depressive
                9
            other than lighting that may improve senior mental health.   thoughts, may not be as noticeable, depression is often
            For instance, the effects of lipophilic redox reactions of   difficult to recognize in seniors. As a result, diagnoses
            biomolecules.  have been studied, which are thought to   are often missed. However, a decrease in motivation and
                       30
            interact with visual reduction-oxidation molecules such as   concentration, along with psychomotor retardation, are
            rhodopsin, a complex composed of retinal and opsin. 31  more prominent. Depression should be suspected in elderly
              This study also addresses the issue of social withdrawal   individuals who are in poor health and show decreased
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            among elderly individuals, which our findings suggest   mood, cognitive dysfunction, and motivation.  It is also
            could be improved. According to the “KHJ Survey    reported that one in five patients who visit outpatient clinics
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            Report” by the Japan National Federation of Families with   for dementia are diagnosed with depressive disorders.
            Hikikomori, in 2010, around 10% of people aged 40 and   Furthermore, as an awareness of the issues we aim to
            over were affected, but by 2021, this number had risen to   expand on in this research, another characteristic is that
            over 30%. In addition, a 2018 survey by the Cabinet Office   many of the patients experience psychosomatic complaints.


            Volume 3 Issue 4 (2025)                         70                              doi: 10.36922/jcbp.5740
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