Risk taking and the insular cortex

Hironori Ishii, Kenichiro Tsutsui, Toshio Iijima

Research output: Contribution to journalReview article

1 Citation (Scopus)

Abstract

Risk taking can lead to ruin, but sometimes, it can also provide great success. How does our brain make a decision on whether to take a risk or to play it safe? Recent studies have revealed the neural basis of risky decision making. In this review, we focus on the role of the anterior insular cortex (AIC) in risky decision making. Although human imaging studies have shown activations of the AIC in various gambling tasks, the causal involvement of the AIC in risky decision making was still unclear. Recently, we demonstrated a causality of the AIC in risky decision making by using a pharmacological approach in behaving rats - temporary inactivation of the AIC decreased the risk preference in gambling tasks, whereas temporary inactivation of the adjacent orbitofrontal cortex (OFC) increased the risk preference. The latter finding is consistent with a previous finding that patients with damage to the OFC take abnormally risky decisions in the Iowa gambling task. On the basis of these observations, we hypothesize that the intact AIC promotes risk-seeking behavior, and that the AIC and OFC are crucial for balancing the opposing motives of whether to take a risk or avoid it. However, the functional relationship between the AIC and OFC remains unclear. Future combinations of inactivation and electrophysiological studies may promote further understanding of risky decision making.

Original languageEnglish
Pages (from-to)965-972
Number of pages8
JournalBrain and Nerve
Volume65
Issue number8
Publication statusPublished - 2013 Aug 1

Keywords

  • Anterior insular cortex
  • Decision making
  • Orbitofrontal cortex
  • Risk

ASJC Scopus subject areas

  • Clinical Neurology

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  • Cite this

    Ishii, H., Tsutsui, K., & Iijima, T. (2013). Risk taking and the insular cortex. Brain and Nerve, 65(8), 965-972.