signaling

Blurring, chopping and blocking. Three online items this week all deal with some pretty dynamic phenomena. The blurring is in our perceptions. It turns out that if you even think you have lost money in an experiment, your ability to distinguish between musical notes will be hampered. What’s the connection? Dr. Rony Paz has been showing that this tendency to lump sounds together is tied to fear. In our evolutionary past, humans may have survived because anything that sounded remotely like a predator aroused an immediate “fight or flight” response. But if mild stress can provoke a similar…