I have just finished my master's. I wrote my thesis in the field of visual attention and visual working memory (VWM). Recently, evidence arose that pupil size serves as a proxy for VWM encoding and maintenance. This has, however, only been tested for a single search template. I investigated whether the pupil can reflect maintenance of two search templates simultaneously.
I want to conduct a visual STM experiment where stimuli are presented focally in an area of 7.3°x7.3°. I have seen in some papers that authors give additional information of minimum and maximum center-to-center distance of stimuli. While I understand the minimum distance is important to differentiate these as two separate objects, I'm wondering, is the maximum distance within an already so limited area necessary?