Some weeks ago an event happened while I was practising biofeedback (on myself) that I found very interesting and revelatory. I got a glimpse of how spontaneous emotions affect the brain, and I wanted to share what I learned with others.
I was working with HEG neurofeedback. This involves having a sensor mounted over the forehead, in this case an infra-red temperature sensor. I discussed this form of biofeedback in a recent blog post. To summarise, the sensor detects changes in heat radiation from the forehead, which are presumed to come from changes in activity in the prefrontal cortex (which is behind the forehead). When I focus intently, with a bright and vivid awareness, the signal increases. When I drift into day-dreaming or dullness, the signal falls. Continue reading
