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Related Concept Videos

Anorexia Nervosa01:28

Anorexia Nervosa

355
Anorexia nervosa is a complex and severe eating disorder characterized by an intense fear of weight gain, an unrelenting pursuit of thinness, and a distorted body image. It often leads to dangerously low body weight relative to an individual's age and height. This disorder is marked by significant physical and psychological consequences, making it one of the most life-threatening psychiatric illnesses.
Symptoms and Physical Effects
Individuals with anorexia nervosa commonly exhibit extreme...
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Bulimia Nervosa01:30

Bulimia Nervosa

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Bulimia nervosa is a complex and severe eating disorder characterized by a cyclical pattern of binge-and-purge eating pattern. It generally involves an episode of binge eating, followed by compensatory behaviors such as vomiting, excessive exercise, laxative use, or fasting, to prevent weight gain. Despite often maintaining a normal weight, individuals with bulimia are intensely preoccupied with their body image and harbor an overwhelming fear of gaining weight. This can contribute to the...
301

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Related Experiment Video

Updated: Nov 8, 2025

Assessing Activity-based Anorexia in Mice
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Lower pattern recognition memory scores in anorexia nervosa.

Johanna Keeler1, Ellen Lambert2, Miriam Olivola2,3

  • 1Section of Eating Disorders, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 103 Denmark Hill, London, SE5 8AF, UK. johanna.keeler@kcl.ac.uk.

Journal of Eating Disorders
|April 18, 2021
PubMed
Summary
This summary is machine-generated.

Patients with anorexia nervosa (AN) show impaired pattern recognition memory, a key hippocampus-dependent function. While pattern separation may be enhanced, this requires further investigation in AN cognitive studies.

Keywords:
Anorexia nervosaHippocampusMnemonic similarity taskPattern separationRecognition memory

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Eating Disorders Research

Background:

  • Anorexia nervosa (AN) is associated with hippocampal volume reductions.
  • The impact of these changes on hippocampus-dependent cognitive functions like pattern separation and recognition remains unclear.

Purpose of the Study:

  • To investigate pattern separation and recognition abilities in individuals with AN.
  • To compare these abilities between AN patients and healthy controls using the Mnemonic Similarity Task.

Main Methods:

  • The Mnemonic Similarity Task was administered to 46 patients with AN and 56 healthy controls.
  • Analysis of Covariance controlled for age, antidepressant use, and task delivery method.

Main Results:

  • Individuals with AN exhibited significantly lower pattern recognition memory scores (medium effect size).
  • A non-significant trend suggested higher pattern separation scores in the AN group (small effect size).
  • Neither ability correlated with age, BMI, eating disorder psychopathology, or anxiety.

Conclusions:

  • This study suggests a potential imbalance in pattern separation and recognition abilities in AN.
  • Further research is warranted to explore these hippocampus-dependent cognitive functions in AN.