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Perception is a function that endows a person with the capacity to mentally represent internal and external stimuli detected by sensory organs. The realization of this function is the mental representation of the detected stimulus. The inputs to the perception function are typically the outputs of a sensory process. However, perception sometimes occurs in the absence of any sensory stimulus, for example, in hallucination.

Note: (see URU discussion)

The perception process is the process by which sensory outputs (signal generated by a real or imagined sensory stimulus) are transformed to produce both a mental representation and phenomenological experience of the stimulus.  At the physical level, the perception process is instantiated by the perception function - the set of anatomic structures, physiological processes, and rules governing physiological processes that initiate, perform, sustain, and terminate the conversion of sensory outputs to a perceptual experience (i.e., the perception function).  

sensation

1. the process or experience of perceiving through the senses. See sensory system.

2. an irreducible unit of experience produced by stimulation of a sensory receptor and the resultant activation of a specific brain center, producing basic awareness of a sound, odor, color, shape, or taste or of temperature, pressure, pain, muscular tension, position of the body, or change in the internal organs associated with such processes as hunger, thirst, nausea, and sexual excitement. Also called sense datum; sense impression; sensum.

perception

•  Identify the major concept(s) around which to organize a manageable project (scope of work) (artifact: mabh-crg concept plan)
•  Complete the major concept table and iteratively update as project progresses (CRG to finalize the definition for SNOMED once all research has been completed) 

•  Identify any non-standard use cases or pain points in research domain  (artifact: mabh-crg use case document)
•  Identify any non-standard use cases or pain points in clinical domain  (artifact: mabh-crg use case document)

•  Perform environmental scan to identify major theoretical models of construct/concept domain (artifact: mabh-crg theoretical model document)
•  Perform environmental scan to identify disorders and clinical variables relevant to the concept domain  (artifact: mabh-crg clinical model document)
•  Perform environmental scan to identify existing explicit representations of concepts in the domain in terminologies (nomenclatures, nosologies, classification systems, controlled vocabularies, and ontologies) (artifact: mabh-crg umls analysis matrix, mabh-crg terminology matrix)

•  Perform and environmental scan to Identify key stakeholders in the basic research, clinical research, clinical practice, and patient advocacy domain (artifact: mabh-crg stakeholder document)
•  Create and implement a plan for engaging stakeholders willing to participate in the CRG for the duration of the specific concept review, either on calls or via discussion forum, or to provide the following:
  •  Stakeholder experience related to specific pain points or use cases in the domain
  •  Copies or screenshots of note templates, clinical notes, flowsheets, order sets, research protocols, other 

•  Review concepts in observable entity hierarchy
  •  Create dot diagram of current state
  •  Create observable entity spreadsheet
•  Review concepts in clinical finding hierarchy
  •  Create dot diagram of current state
  •  Create observable entity spreadsheet

•  Analyze concepts in observable entity hierarchy
  •  Create observable entity spreadsheet
  •  Create dot diagram of current state
  •  Perform review of dot diagram to identify potential duplicate, outdated, missing or inaccurately modeled concepts
  •  Update spreadsheet with changes including all defining relationships
•  Analyze concepts in clinical finding hierarchy
  •  Create observable entity spreadsheet
  •  Create dot diagram of current state
  •  Perform review of dot diagram to identify potential duplicate, outdated, missing or inaccurately modeled concepts
  •  Update spreadsheet with additions or changes to concepts, including all defining relationships
•  Identify missing concepts in other hierarchies (e.g., qualifier value, body structure) required to completely and accurately model observable entity and clinical finding concepts
•  Create explicit, narrative definitions for all concepts

•  Submit request for changes through CRS system or via template worksheet