People with bad AVANTASIA distinguished episodic memory

Australian scientists have described the influence of Afanasii (inability to create visual images with no external stimulation) to other cognitive processes. A survey of 267 people with fanatasy and 396 of the control group, the researchers found that AVANTASIA limits the ability to compose images, not only visual, but also auditory modality, stopping to retrieve memories and separate the facts from episodic memory, but also makes dreams less vivid. Article published in Scientific Reports.

Preparation of visual images with no external stimulation is important not only for the imagination: the human ability to imagine something in the “visible” parts in a lot of founded and the work is episodic, prospective and working memory (at least its visual component), as well as dreams and the ability to dream. To compile the visual images, however, can not all people — and in this case the meal to talk about “AVANTASIA” or inability to imagine: according to rough estimates, this condition is typical for two percent of the people.

In this research Afanasii very little, mostly due to the fact that dedicated to her research field is quite young: in detail for the first time, scientists have described this phenomenon in 2015. In particular, it is still not empirically studied the effect of AVANTASIA on those same cognitive processes that are so important to be able to create visual images.

Fix it decided scientists under the leadership of Alexey dose (Alexei Dawes) from the University of New South Wales. Their study involved 267 people with AVANTASIA: its presence is checked by using the poll on the brightness of visual images, presented in 1973. Together with them, participated and 396 people in the control group (without any problems with the compilation of visual images): the students and volunteers gathered with the help of crowdsource.

All participants completed several surveys: in addition to the brightness of visual images, the scientists also evaluated the ability of volunteers to imagine and evaluate objects and spaces (for example, it was necessary to assess how a person visualizes the face of a close friend or how well he plays Tetris), the ability to retrieve memories of episodic memory (in the form of facts and scenes), how often they dream and dream (and how bright it is what they see) and how they react to painful experiences in the past psychological trauma (particularly how well they remember details about them).

Analysis of survey results showed that people with anatasia inferior to the control group not only in the ability to make visual images: they also could not make the multimodal images (i.e., for example, to imagine the melody), and could not imagine individual objects in detail.

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