ePoster

Neural correlates of autobiographical memory in congenitally blind people

Sven Lange, Katharina Wall, Bettina Wabbels, Cornelia McCormick
FENS Forum 2024(2024)
Messe Wien Exhibition & Congress Center, Vienna, Austria

Conference

FENS Forum 2024

Messe Wien Exhibition & Congress Center, Vienna, Austria

Resources

Authors & Affiliations

Sven Lange, Katharina Wall, Bettina Wabbels, Cornelia McCormick

Abstract

Mounting evidence suggests that autobiographical memory is crucially dependent on our ability to construct visual mental images. Indeed, we have found previously that aphantasics (people who cannot construct mental images) have more difficulties to recall personal memories than controls and that aphantasics showed decreased hippocampal activation during autobiographical memory. While aphantasia is a subjective condition of deficient mental imagery, in a follow-up study, we examine the neural correlates of autobiographical memory in a very rare patient population, people who are blind from birth. People who are blind from birth never had the opportunity to acquire visual memories, hence presumably lacking the ability to experience visual mental imagery. Up to date, the mental landscape of this rare patient population has not been examined in much detail. Here, we present preliminary functional magnetic resonance imaging (fMRI) data of five congenitally blind people and their matched sighted controls during the performance of an autobiographical memory task. We found that in comparison to controls, blind individuals showed decreased activity in bilateral hippocampi, posterior cingulate cortex, and right angular gyrus. In contrast, blind individuals showed increased activity in the brain regions typically associated with the fronto-parietal attention network, and auditory cortex. These preliminary results provide first insights into the neural correlates of autobiographical memory in congenitally blind people.

Unique ID: fens-24/neural-correlates-autobiographical-356c43fb