Experimental Study on Cerebral Hemodynamics during Observation of Plants
Psychological and physiological effects of plants were studied by investigating human responses while observing plants. Eighteen healthy adult male (aged between 19～25 years) participated in this study. Semantic differential method (SD method) and multi- channel near-infrared spectroscopy (NIRS) were used to survey verbal and non-verbal response, respectively. Cerebral hemodynamics as a new evaluation index of brain activity was recorded for right brain hemisphere where visual information is mainly delivered. Thirty seconds of cerebral blood flow in forty seven channels were calculated when watching five types of picture images with different rates of hedge against gray block wall; 0: 10, 3: 7, 5: 5, 7: 3, 10: 0. In the SD results, similar evaluations were found in all subjects. However, the change of cerebral hemodynamics as a non-verbal response varied among subjects. Largely two patterns of hemodynamics change were found with increasing plants rate in picture images; group A showed significant decreases of blood flow volume in many cortical regions, Group B had significant increase of blood flow volume in the occipital region for the scenes seen comparatively more plant. Our findings on the cerebral hemodynamics may indicate that there are two patterns of brain activity during observation of plants; group A in which brain areas associated with visual information and thinking work simultaneously to the visual stimuli; group B in which brain areas associated only with visual information work.
Psychological and Physiological Effect of Plant Cerebral Hemodynamics Nirs Hedge Block Wall
Ayumu Suda Lee Ju-Young Eijiro Fujii
Graduate School of Science and Technology, Chiba University Faculty of Horticulture, Chiba University
国际会议
第10届中日韩国际风景园林学术研讨会(10th International Landscape Architecture Symposium of Korea,China and Japan)
韩国京畿道
英文
214-219
2007-10-01（万方平台首次上网日期，不代表论文的发表时间）