Abstract
Objectives : This paper aims to understand the meaning of '少陰人 心之範圍' and to determine its clinical implication. Methods : First, the meaning of the verb '範圍' was examined in 『IChing·XiCi(周易·繫辭傳)』 from where it originated. Based on the findings, the meaning of '心之範圍' in the context of the nature and emotion[性情] of So-eumin as explained in the 『DongUisusebowon(東醫壽世保元)』 was further investigated. Moreover, the clinical significance of the observation of '心之範圍' in relation to determining prognosis was discussed in regards to 'visceral syncope[藏厥]' and 'exuberating yin separating yang[陰盛隔陽]' which come under the severe symptoms[危證] category in the disease pattern of So-eumin. Results : '範圍' as mentioned in 『IChing·XiCi(周易·繫辭傳)』 refers to the process of creating a framework that takes after the tendencies of the patterns of change of the external world that influences mankind. The objective of this process is to prepare for the excessiveness and insufficiency of the change that happens in the external world so as to ultimately protect all existences. The workings of '範圍' could be assumed on a personal level as well. As the nature and emotion of So-eumin is closely related to the purpose and object of '範圍', Yi Jema suggested that through observing whether the So-eumin exhibits '心之範圍' or not, that it could be determined whether his/her innate nature is being properly exercised or not. Conclusions : Whether one's agitation calms down or not even for a moment is the criteria for determining prognosis of the entire disease, while its calming-down relies on proper functioning of '心之範圍'. The way to determine this is through observation of the manifest attitude of the So-eumin. If the So-eumin displays a poised and autonomous[綽綽卓卓] attitude even for a moment, it could be understood as the '心之範圍' process being properly functioning, indicating the overall direction to be heading towards relief of the sense of instability, allowing for a positive outlook on treatment.