The Effects of Early Life Stress on Impulsivity
Overview
Psychology
Social Sciences
Affiliations
Elevated impulsivity is a symptom shared by various psychiatric disorders such as substance use disorder, bipolar disorder, and attention-deficit/hyperactivity disorder. However, impulsivity is not a unitary construct and impulsive behaviors fall into two subcategories: impulsive action and impulsive choice. Impulsive choice refers to the tendency to prefer immediate, small rewards over delayed, large rewards, whereas impulsive action involves difficulty inhibiting rash, premature, or mistimed behaviors. These behaviors are mediated by the mesocorticolimbic dopamine (DA) system, which consists of projections from the ventral tegmental area to the nucleus accumbens and prefrontal cortex. Early life stress (ELS) alters both impulsive choice and impulsive action in rodents. ELS also changes DA receptor expression, transmission, and activity within the mesocorticolimbic system. This review integrates the dopamine, impulsivity, and ELS literature to provide evidence that ELS alters impulsivity via inducing changes in the mesocorticolimbic DA system. Understanding how ELS affects brain circuits associated with impulsivity can help advance treatments aimed towards reducing impulsivity symptoms in a variety of psychiatric disorders.
Effects of chronic stress on cognitive function - From neurobiology to intervention.
Girotti M, Bulin S, Carreno F Neurobiol Stress. 2024; 33:100670.
PMID: 39295772 PMC: 11407068. DOI: 10.1016/j.ynstr.2024.100670.
A mixed methods experience sampling study of a posttraumatic growth model for addiction recovery.
Runyan J, Vermilya S, St Pierre M, Brooks N, Fowler A, Brewer T Sci Rep. 2024; 14(1):3511.
PMID: 38383566 PMC: 10881473. DOI: 10.1038/s41598-024-53740-7.
Biro L, Miskolczi C, Szebik H, Bruzsik B, Varga Z, Szente L Neurobiol Stress. 2023; 25:100546.
PMID: 37323648 PMC: 10265620. DOI: 10.1016/j.ynstr.2023.100546.
Hardy K, Hart D, Rosen M Front Behav Neurosci. 2023; 17:1128586.
PMID: 37234406 PMC: 10206074. DOI: 10.3389/fnbeh.2023.1128586.
Sex differences in addiction-relevant behavioral outcomes in rodents following early life stress.
Rincon-Cortes M Addict Neurosci. 2023; 6.
PMID: 37101684 PMC: 10124992. DOI: 10.1016/j.addicn.2023.100067.