An Emerging Framework
In December 2024, building on the groundbreaking work of neuroscientist Adam Zeman, we introduced a new way to understand mental imagery, identifying fifteen distinct types that reflect the complexity of how people visualise internally—expanded to twenty in February 2025.
These types fall on a vividness spectrum, ranging from aphantasia (the absence of mental imagery) to hyperphantasia (extremely vivid imagery). This framework reveals over a billion possible combinations, highlighting the vast diversity of mental image experiences across individuals.
Our work goes beyond categorisation, highlighting the importance of recognising and valuing neurodiversity. Each person’s unique mental imagery offers vital insights into mental processes, imagination, and perception.