"Synaesthetics" Natural Recordings by Native Speakers
Synesthesia (note: the correct spelling) is a neurological phenomenon in which the stimulation of one sensory pathway leads to an automatic, involuntary experience in another sensory pathway. For example, seeing numbers or letters in specific colors, or tasting a particular flavor when hearing a particular sound.
The term "symptomology" refers to the branch of medicine that deals with the study of symptoms. It involves the classification, analysis, and interpretation of symptoms exhibited by a patient, in order to diagnose and understand the underlying causes of a disease or illness.