The hearing of sound that is not present in acoustic input. Auditory hallucinations are also included in subjective tone. SUBJECTIVE EXAMINATION, SUBJECTIVE TONE: “Hearing multiple tones at one time or no tone is an example of subjective tone.”
Introduction to Adult Sensorineural Lesions Adult sensorineural lesions represent a diverse category of pathological injuries that affect the auditory system, extending from the highly specialized structures of the inner ear, specifically the cochlea, through the eighth cranial nerve (the vestibulocochlear nerve), and culminating in the complex auditory perception centers located within the cerebral cortex. This […]
Defining Cortical Hearing Loss and Central Auditory Processing Disorders Cortical Hearing Loss (CHL) represents a specific and often challenging form of auditory impairment that is fundamentally correlated with hearing disorders resulting from injury to the superior neurologic areas within the brain, particularly the primary and secondary auditory cortices located in the temporal lobes. Unlike typical […]
Definition and Phenomenological Description The concept of the tonal gap, sometimes referred to clinically as a scotoma or notch, describes a highly specific auditory deficit characterized by a restricted range of frequencies to which an individual exhibits partial or complete insensitivity. Crucially, the affected person retains normal or near-normal sensitivity to pitches positioned immediately outside […]
Recruitment Phenomenon in Auditory Perception and Neurophysiology The Core Definition of Auditory Recruitment Recruitment is a complex and often distressing clinical symptom characterized by an abnormally rapid growth in the perception of loudness as the intensity of an acoustic stimulus increases. For individuals experiencing this phenomenon, sounds that are just barely audible quickly become perceived […]
Otoneurology: An Encyclopedia Entry Introduction to Otoneurology Otoneurology is a highly specialized medical field dedicated to the diagnosis, treatment, and management of disorders affecting the auditory system and the vestibular system. These two intricate systems, both housed primarily within the inner ear, are fundamentally responsible for our sense of hearing and our ability to maintain […]