Reference code: | PT/FB/BL-2022-304.04 |
Location: | BF-GMS
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Title:
| The role of serotonin in fear learning and memory: A systematic review of human studies
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Publication year: | 2023
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URL:
| https://www.mdpi.com/2076-3425/13/8/1197
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Abstract/Results: | ABSTRACT:
Fear is characterized by distinct behavioral and physiological responses that are essential for the survival of the human species. Fear conditioning (FC) serves as a valuable model for studying the acquisition, extinction, and expression of fear. The serotonin (5-hydroxytryptamine, 5-HT) system is known to play a significant role in emotional and motivational aspects of human behavior, including fear learning and expression. Accumulating evidence from both animal and human studies suggests that brain regions involved in FC, such as the amygdala, hippocampus, and prefrontal cortex, possess a high density of 5-HT receptors, implicating the crucial involvement of serotonin in aversive learning. Additionally, studies exploring serotonin gene polymorphisms have indicated their potential influence on FC. Therefore, the objective of this work was to review the existing evidence linking 5-HT with fear learning and memory in humans. Through a comprehensive screening of the PubMed and Web of Science databases, 29 relevant studies were included in the final review. These studies investigated the relationship between serotonin and fear learning using drug manipulations or by studying 5-HT-related gene polymorphisms. The results suggest that elevated levels of 5-HT enhance aversive learning, indicating that the modulation of serotonin 5-HT2A receptors regulates the expression of fear responses in humans. Understanding the role of this neurochemical messenger in associative aversive learning can provide insights into psychiatric disorders such as anxiety and post-traumatic stress disorder (PTSD), among others.
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Accessibility: | Document exists in file
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Language:
| eng
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Related objects:
| BL-2018-160.09
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Author: | Tortora, F.
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Secondary author(s):
| Hadipour, A. L., Battaglia, S., Falzone, A., Avenanti, A., Vicario, C. M.
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Document type:
| Article-d
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Number of reproductions:
| 1
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Reference:
| Tortora, F., Hadipour, A. L., Battaglia, S., Falzone, A., Avenanti, A., & Vicario, C. M. (2023). The role of serotonin in fear learning and memory: A systematic review of human studies. Brain Sciences, 13(8), 1197. https://doi.org/10.3390/brainsci13081197
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2-year Impact Factor: | 3.3|2022
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Impact factor notes: | Impact factor not available yet for 2023
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Times cited: | 2|2024-02-16
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Indexed document: | Yes
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Quartile: | Q2
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Keywords: | Human fear conditioning / Fear memory / Serotonin / 5-HT receptor / Selective serotonin reuptake inhibitors (SSRIs) / Acute tryptophan depletion (ATD) / 5-HTT polymorphisms
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The role of serotonin in fear learning and mMemory: A systematic review of human studies |