Source:http://linkedlifedata.com/resource/umls/id/C0004268
MSH: Focusing on certain aspects of current experience to the exclusion of others. It is the act of heeding or taking notice or concentrating.,CSP: selection and perception of a certain stimulus or of a range of stimuli composing a part of a complex stimulus situation; concentration of the mental powers upon an object; a close or careful observing or listening.