Ears · Anatomical variationDarwin’s tubercle
A small thickening on the upper outer rim of the ear.
Frequency: Varies by individualEars
Ears · Anatomical variation
Ears · Anatomical variationAttached earlobes
Earlobes that meet the cheek without a distinct free lower edge.
Frequency: Varies by individual
Ears · PerceptionBurning red outer ears
Rare attacks combine redness of the outer ear with burning pain.
Frequency: Rare
Ears · PerceptionWhen lips change what you hear
Conflicting mouth movements and speech sounds can produce a third perceived sound.
Frequency: Varies by individual
Ears · PerceptionThe voice from the puppet
The brain often assigns a sound to the visible source that is moving.
Frequency: Varies by individual
Ears · ReflexGaze remains stable
When the head moves, the eyes move in the opposite direction so the image remains stable.
Frequency: Common
Ears · Body soundRinging without a sound
Tinnitus is the perception of a sound or noise without a corresponding external source.
Frequency: Common
Ears · Body soundMusic no one is playing
Music without an external source can be experienced as an actual sound, including in people with hearing loss.
Frequency: Rare
Ears · Body soundClicking in the ear
Jerky contractions of small middle-ear muscles can be heard as clicking or fluttering.
Frequency: Rare
Ears · PerceptionAuditory continuity illusion
An interrupted tone or speech sound can seem to continue when a suitable noise masks the gap.
Frequency: Varies by individual
Ears · Rare abilityHuman echolocation
Some blind people use self-generated clicks and their echoes for orientation.
Frequency: Frequency unclear
Ears · Involuntary responseExploding head syndrome
While falling asleep or waking, a person may experience a sudden loud noise with no external source.
Frequency: Frequency unclear
Ears · ReflexEar popping on swallowing
Swallowing can briefly open the Eustachian tube.
Frequency: CommonSurprisingly quiet here.
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