Research library
Papers about aphantasia and mental imagery, with summaries in plain words. The summaries are generated by AI and may contain errors.
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Montabes de la Cruz and colleagues · Current Biology
Twenty-three people with aphantasia listened to recorded sound scenes of a forest, a crowd and traffic while blindfolded in a brain scanner. The type of sound could mostly not be read from their early visual areas, except in two small regions, although it could be in earlier studies of sighted and blind people. The drop was clear against a small blind group but not statistically reliable against 10 sighted people scanned years before. The authors suggest that signals from hearing areas into the visual cortex may be weaker in aphantasia, not only those used for imagery.
Bergmann and Ortiz-Tudela · Neuroscience & Biobehavioral Reviews
Researchers propose that aphantasia stems from specific deficits in high-level feedback signals along the visual "what" stream during memory retrieval. This suggests that memory impairments in aphantasia are tied to the inability to reinstate precise object features rather than a general episodic memory failure.
Königsmark, Bergmann and Reeder · Cortex
People with aphantasia are significantly less likely to experience vivid or complex pseudo-hallucinations during rhythmic flicker stimulation. This suggests that the ability to generate voluntary mental imagery increases susceptibility to anomalous perceptual experiences.
Keogh, Bergmann and Pearson · eLife
In brain scans and magnetic stimulation tests, people with lower visual cortex activity and excitability had stronger imagery on an objective test. Lowering excitability with electrical stimulation strengthened imagery but not rated vividness.