Shane Williams (an aphant) hosts a podcast where he interviews people using a set of questions designed to probe their inner sensory world. From it I’ve learned, for example, that some people can taste food when reading a menu, or have a conversation with a deceased loved one and actually hear their voice. One of his prompts is whether guests can place themselves inside a photo of a carnival (which he provides); many say they can smell the cotton candy or hear the chatter of the crowd.
It’s striking how little we really know about the variety of inner sensory experiences: Discovering Your Mind – Aphantasia and Beyond https://podcasts.apple.com/us/podcast/discovering-your-mind-...
A favorite research paper compares brain activity in identical twin sisters, only one of whom is aphantasic: The Neural Underpinnings of Aphantasia: A Case Study of Identical Twins https://www.biorxiv.org/content/10.1101/2024.09.23.614521v2