Palm muting is a guitar technique used to create a muted, percussive sound. It involves resting the edge of the picking hand lightly on the strings near the bridge while strumming or picking. This technique can produce a softer tone and is often used in various music genres, especially in rock and metal. By adjusting the pressure and position of the hand, guitarists can control the degree of muting, allowing for a range of sounds. Palm muting is commonly used in riffs and rhythms, adding depth and texture to the music while maintaining a strong rhythmic foundation.