Pubertal status associations with reward and threat sensitivities and subcortical brain volumes during adolescence

Snežana Urošević, Paul Collins, Ryan Muetzel, Kelvin O. Lim, Monica Luciana

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Adolescence is characterized by complex developmental processes that impact behavior, biology, and social functioning. Two such adolescence-specific processes are puberty and increases in reward sensitivity. Relations between these processes are poorly understood. The present study focused on examining unique effects of puberty, age, and sex on reward and threat sensitivities and volumes of subcortical brain structures relevant for reward/threat processing in a healthy sample of 9-18. year-olds. Unlike age, pubertal status had a significant unique positive relationship with reward sensitivity. In addition, there was a trend for adolescent females to exhibit higher threat sensitivity with more advanced pubertal development and higher reward and threat sensitivity with older age. Similarly, there were significant puberty by sex interaction effects on striatal volumes, i.e., left nucleus accumbens and right pallidum. The present pattern of results suggests that pubertal development, independent of chronological age, is uniquely associated with reward hypersensitivity and with structural differences in striatal regions implicated in reward processing.

Original languageEnglish (US)
Pages (from-to)15-26
Number of pages12
JournalBrain and Cognition
Volume89
DOIs
StatePublished - Aug 2014

Keywords

  • Adolescence
  • Behavioral approach system (BAS)
  • Behavioral inhibition system (BIS)
  • Puberty
  • Reward sensitivity

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