The effect of reproducing two-dimensional photographs of flower arrangements in three dimensions on prefrontal blood flow in elderly patients with dementia
Flower arrangement (FA) is a creative process in which cut flowers are set freely in a water-absorbing sponge. We investigated the activation of the visuospatial cognitive and working memory in elderly patients with dementia by presenting them with a completed FA photo and assigning them the task of reproducing it in three dimensions (2D task). A free-running FA involves creating a product in addition to verifying the soundness of visuospatial cognitive and working memory, which complicates the task. Except for the creativity of the work in FA, we thought that the 2D task could evaluate the activation of visuospatial cognitive function. An experiment was performed on 12 women aged 65 or older with mild or moderate dementia. We measured visuospatial cognitive and working memory in the following order: 1) at rest; 2) during general free FA; 3) at rest; and 4) during FA with the 2D task. Relative regional cerebral blood flow (rCBF) increases when human cognitive activity is activated. On the other hand, when self-efficacy is low and cognitive activity is inactivated by lethargy or abandonment, rCBF is low. Since the prefrontal cortex is controlled by the visuospatial cognitive and working memory, rCBF in the prefrontal cortex during work was evaluated using HOT-1000 (NeU Co., Ltd.). Blood flow was continuously measured from the time of rest until the end of FA with the 2D task. Nine people completed the experiment. In the 2D task, rCBF increased in the left and right prefrontal cortex in 6 and 7 patients, respectively. Since chronic reduction of prefrontal rCBF is involved in the progression of dementia, 2D tasks may promote blood flow at the site and help to prevent the progression of dementia. Developing a task that activates the patientRSQUOs cognitive activities using physiological indicators such as rCBF may increase therapeutic effectiveness.
Mita, S., Hosokawa, M. and Hayashi, T. (2021). The effect of reproducing two-dimensional photographs of flower arrangements in three dimensions on prefrontal blood flow in elderly patients with dementia. Acta Hortic. 1330, 139-146
self-efficacy, cognitive activity, relative regional cerebral blood, physiological-indicator