The ear can detect a time difference as slight as 30 microseconds and smaller differences ... Time delays of reflections from the ridges of the pinna. The first chart (left) shows the delays (in ...

Ear (aural) hematomas occur when blood vessels in the pinna rupture secondary to trauma or excessive head shaking. Blood fills the space between the skin and the cartilage, causing pain and ...

Our auricular muscles are vestigial, remaining part of our bodies while losing their function – moving the pinna, the outer ear – as evolution took its course. “The exact reason these became ...

Unlike mammals, birds do not have external ear flaps (pinnae). Instead, they have ear openings hidden beneath feathers, ...