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The first image is bright and photographic, levels 2 through 4 show increasingly simpler and more faded images, and the last—representing complete aphantasia—shows no image at all. Aphantasia (/ ˌ eɪ f æ n ˈ t eɪ ʒ ə / AY-fan-TAY-zhə, / ˌ æ f æ n ˈ t eɪ ʒ ə / AF-an-TAY-zhə) is the inability to visualize. [1]
The condition where a person lacks mental imagery is called aphantasia. The term was first suggested in a 2015 study. [28] Common examples of mental images include daydreaming and the mental visualization that occurs while reading a book.
Autobiographical memory (AM) [1] is a memory system consisting of episodes recollected from an individual's life, based on a combination of episodic (personal experiences and specific objects, people and events experienced at particular time and place) [2] and semantic (general knowledge and facts about the world) memory. [3]
Zeman first became aware that some people cannot form mental images when a man (known as "MX") reported that, after minor heart surgery, he had no mental image of people or places when he thought of them. [a] The case was reported in 2010. [11]
List-length effect: A smaller percentage of items are remembered in a longer list, but as the length of the list increases, the absolute number of items remembered increases as well. [163] Memory inhibition: Being shown some items from a list makes it harder to retrieve the other items (e.g., Slamecka, 1968). Misinformation effect
When a person has Alzheimer's disease, "the brain cells and the brain networks start to die [and] there is dysfunction in terms of the person's ability to cognitively process things," Devi says.
One memory is recorded per cue word, so it can be difficult to know whether this memory is their earliest memory or the first memory that popped to mind. It may be a problem if participants are not asked to record the earliest memory they can recall which relates to the cue.