A cognitive profile of multi-sensory imagery, memory and dreaming in aphantasia
Abstract
For most people, visual imagery is an innate feature of many of our internal experiences, and appears to play a critical role in supporting core cognitive processes. Some individuals, however, lack the ability to voluntarily generate visual imagery altogether – a condition termed “aphantasia”. Recent research suggests that aphantasia is a condition defined by the absence of visual imagery, rather than a lack of metacognitive awareness of internal visual imagery. Here we further illustrate a cognitive “fingerprint” of aphantasia, demonstrating that compared to control participants with imagery ability, aphantasic individuals report decreased imagery in other sensory domains, although not all report a complete lack of multi-sensory imagery. They also report less vivid and phenomenologically rich autobiographical memories and imagined future scenarios, suggesting a constructive role for visual imagery in representing episodic events. Interestingly, aphantasic individuals report fewer and qualitatively impoverished dreams compared to controls. However, spatial abilities appear unaffected, and aphantasic individuals do not appear to be considerably protected against all forms of trauma symptomatology in response to stressful life events. Collectively, these data suggest that imagery may be a normative representational tool for wider cognitive processes, highlighting the large inter-individual variability that characterises our internal mental representations.
Authors
- Alexei Joel Dawes3
- Rebecca Keogh14
- Thomas Andrillon2
- Joel Pearson28
Understanding Aphantasia: A Peek into the Mind's Eye
Overview/Introduction
Methodology
Key Findings
- Reduced Sensory Imagery: Aphantasic individuals reported significantly lower imagery across all sensory domains, not just visual. However, only about 26% reported a complete absence of multi-sensory imagery.
- Memory and Imagination: Participants with aphantasia experienced less vivid autobiographical memories and struggled to imagine future scenarios in detail, suggesting that visual imagery plays a crucial role in these processes.
- Dreaming: Aphantasic individuals reported fewer and less vivid dreams compared to controls, indicating that visual imagery might contribute to the richness of dream experiences.
- Spatial Abilities: Despite their lack of visual imagery, aphantasic individuals showed no significant differences in spatial abilities, suggesting that these skills are preserved.
- Trauma Response: The absence of visual imagery did not significantly protect aphantasic individuals from trauma-related symptoms, although they reported fewer intrusive memories.