The next time you whisper sweet-nothings into someone's ear, you might want to target their left side.
Neuroscientists at the Swiss Federal Institute of Technology Lausanne , Lausanne University Hospital and thein Switzerland have discovered a strange bias in our perception of pleasing voices.
According to the brain scans of 13 adults, positive human sounds, like laughter, trigger stronger neural activity in the brain's auditory system when they are heard from the left-hand side, suggesting the human auditory cortex is specially tuned to the direction of sounds that make us happy.he experiments focused only on changes in activity in the auditory cortex.
Because the left ear feeds information to the right hemisphere of the auditory cortex first, it was assumed that the right side of the brain must be better at processing emotion than the left side.When the study's participants listened to happy human vocalizations from three different directions – either the left, center, or right – both sides of their auditory cortex activated.
The direction of a noise can obviously impact the quality of that sound – think of an ambulance siren as it travels toward you and then away. And it can also impact our perception.
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