Our attention requires a conscious selection of focus. In doing so, we must extract what is important and then focus on it, while we ignore other stimuli. Every day, you have examples of when you did not ignore other stimuli. For example, when you go through a stop sign, or drive down the wrong street. These are examples of shifting our attention to an unimportant stimulus.
When paying attention, the focus and intensity of active attention varies. (For example, a proof reader must have maximum focus to make sure that there are no errors, while the reader of the magazine may only skim the material.)
There is also the danger of distractions. There are two main types of distractions:
• Sensory distractions (things that are going on around you)
• Emotional distractions (your inner thoughts)
Emotional distractions are more disruptive than sensory. While you are paying attention, at some point the brain may shift between external events into your internal memories and interests. (For example: While listening to a story by a friend, you think of a similar experience from your past). This shift may be important because it allows updating and maintaining of long-term memories. It strengthens the neural networks that contain and process them. However, if your mind wanders towards negative thoughts and begins to focus on self-centered thoughts, then they can seriously impede your ability to pay attention.