The spatial distribution of attention

Understanding how spatial attention is distributed over space (i.e. the attentional window) is highly important for theoretical, methodological, as well as applied reasons. One fundamental challenge to the study of the attentional window is that most of our current knowledge is based on measuring distractors interference, or relying in some other way on properties of the participants' responses (e.g. response time). However, other factors such as distractor visibility may mediate distractor interference, and in general participants' response can be influenced by many other factors including higher-level strategies, experience, response history, response biases, and so on. Recent paradigms, which do not rely on participants' response, such as measuring attentional modulations of the pupillary light response, may help us face this challenge.