Hi Nicolas, I loved your presentation. I have a question for you, what area(s) of the brain do you think are involved in ensemble processing? We study several neurodegenerative disease populations and I am wondering if we might expect to see dificits in any of them.
Thanks, and that’s an excellent question Dr. Disbrow! As far as I’m aware there isn’t much research that has tried to isolate where this process is coming from but there are some that have looked at interactions between frontoparietal networks and visual areas during ensemble tasks. Given that I imagine in any neurodegenerative diseases where those connections are impacted ensemble perception could be affected but I cannot say for sure. Thank you for your question.
This is great. Really nice work. Can you give a brief overview of the main takeway for the lay community?
Thank you so much Kevin! To summarize the study we discovered that we might actually process more abstract information (such as numerical value) from groups in the same way that we process things like size or color in groups. Which was somewhat surprising, as intuitively you might assume that to average a group of numbers each number would require individual attention.
Really nice job!
I really liked this presentation. Do you have any followup studies in mind?
Thank you so much Nathan! As our display sizes were 1500ms that could have allowed for several eye fixations or shifts of attention, and since the digits in the 10 and 7 item sets were closer to each other than the 5 item they could have gotten more information from those larger sets with each shift of attention. So they still weren’t necessarily attending to individual items but the displays may have been too long to rule out an effect of attention. In a follow up study we would like to control for this by using shorter display durations and see if the results are similar.