The Psychobiology of Conscience: Signatures in Brain Regions of Interest

Abstract

OBJECTIVES: 1) to highlight studies in the last eight years in which functional magnetic resonance imaging or other neuroimaging techniques have been employed in identifying brain activities as putative correlates of various TASKS proposed to represent essential MORAL PSYCHOLOGICAL FUNCTIONS and 2) to consider how NEUROIMAGING STUDIES of CONSCIENCE FUNCTIONAL TASKS might be conducted which provide more depth and meaning in future moral psychobiological investigation. METHOD: Brief descriptions of the principles and caveats of interpreting findings from NEUROIMAGING are provided. A GLOSSARY OF TERMS derived from cognitive sciences including neuropsychology and developmental psychology is presented. These terms, it is suggested, are necessary but not sufficient in understanding the DOMAINS OF CONSCIENCE. Existing NEUROIMAGING STUDIES of putative MORAL PSYCHOLOGICAL FUNCTIONAL TASKS that (at least nominally) address aspects of each CONSCIENCE DOMAIN are reviewed. These STUDIES are organized according to the following subtitles (with the CONSCIENCE DOMAIN of concern identified parenthetically): MORAL COGNITION: MORAL JUDGMENT AND VALENCE (CONSCIENCE DOMAIN: VALUATION), EMPATHY (CONSCIENCE DOMAIN: MORALIZED ATTACHMENT), MORAL EMOTIONS (CONSCIENCE DOMAIN: MORAL EMOTIONAL RESPONSIVENESS), and SELF CONTROL (CONSCIENCE DOMAIN: MORAL VOLITION). No existing NEUROIMAGING STUDIES clearly correspond to the anchor domain, CONCEPTUALIZATION OF CONSCIENCE. The CONSCIENCE DOMAINS are briefly characterized with reference to the empirical research supporting each. CONCLUSIONS: In the last several years, a number of intriguing findings have emerged from NEURO-IMAGING STUDIES relevant to putative MORAL PSYCHOLOGICAL FUNCTIONAL TASKS. However, in addition to caveats attaching to any attribution of activity to neurological structures and their connections based upon signals captured via NEURO-IMAGING, serious concerns also arise regarding the validity of the TASKS currently employed in these studies as truly representative of CONSCIENCE FUNCTIONS. Instruments designed to inquire into relevant CONSCIENCE DOMAINS are put forward. Complementary TASKS more sensitive to each CONSCIENCE DOMAIN are imagined and offered for consideration as ways to provide more depth and meaning to future NEUROIMAGING STUDIES OF CONSCIENCE.