Recent work has shown that the pupil will adjust in response to illusory brightness. This study shows that the imagery pupillary light response correlates with objective measures of sensory imagery strength. It also demonstrates that there was no evidence for an imagery pupillary light response in a group of individuals without visual imagery (aphantasia). The first physiological validation of aphantasia.

Aphantasia, the loss of mental imagery, is a rare disorder and even more infrequent when acquired. No previous cases have been identified that were caused by transplant-related treatment. We describe a case of acquired aphantasia in a 62-year-old male with refractory IgG kappa multiple myeloma after receiving an autologous stem cell transplant (ASCT) following high-dose melphalan with a complicated hospital admission.

First systematic, wide-ranging neuropsychological and brain imaging study of people with aphantasia (n=24), hyperphantasia (n=25) and mid-range imagery vividness (n=20). These behavioral and neural signatures of visual imagery vividness extremes validate and illuminate this significant but neglected dimension of individual difference.

New study finds visual imagery directly influences how we process information and is not simply a byproduct of cognitive priming. Revealing new evidence in the imagery debate.

A large network of brain activity spanning frontal, parietal, temporal, and visual cortex is involved in generating and maintain images in mind. The anatomy and functionality of visual cortex, including primary visual cortex, have been associated with individual differences in visual imagery ability, pointing to a potential correlate for both aphantasia and hyperphantasia.

People with aphantasia – that is, the inability to visualise mental images – are harder to spook with scary stories, a new UNSW Sydney study shows. According to the findings, scary stories lost their fear factor when the readers couldn’t visually imagine the scene – suggesting imagery may have a closer link to emotions than scientists previously thought.

The majority of aphantasics retain the capacity to experience rich visual dreams, despite being unable to produce visual imagery while awake. Aphantasia raises important theoretical concerns for the ongoing debate in the philosophy and science of consciousness over the nature of dreams.

Rhythmic visual flicker is known to induce illusions and altered states of consciousness. Study finds people with visual imagery were more susceptible to flicker-induced illusions (FII) than people with aphantasia.

Aphantasia, although it does not imply the absence of all forms of imagination, such as perspective taking and narrative construction, is quite literally a disorder affecting the individual’s capacity to form and work with images, and thus the absence of a certain way in which consciousness engages with the image-object, distinct both from perception and thought. This paper examines how phenomenological accounts of imagination can help us to better understand aphantasia, and also the ways in which aphantasia calls into question some aspects of an existential account of self.

Study finds that 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, as well as fewer dreams.