As I sit in the park watching my grandson play tag with other kids on the playscape, the noise from all the children is deafening, yet I can pick out my grandson’s voice amidst the din. It makes me wonder how we are able to tune things out that are not important to us at the time, and yet when it’s necessary we’re able to tune into something such as someone’s voice, effectively filtering what we need from the noise. [Read more…]