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What do I want and when do I want it: brain correlates of decisions made for self and other.

ABSTRACT: A number of recent functional Magnetic Resonance Imaging (fMRI) studies on intertemporal choice behavior have demonstrated that so-called emotion- and reward-related brain areas are preferentially activated by decisions involving immediately available (but smaller) rewards as compared to (larger) delayed rewards. This pattern of activation was not seen, however, when intertemporal choices were made for another (unknown) individual, which speaks to that activation having been triggered by self-relatedness. In the present fMRI study, we investigated the brain correlates of individuals who passively observed intertemporal choices being made either for themselves or for an unknown person. We found higher activation within the ventral striatum, medial prefrontal and orbitofrontal cortex, pregenual anterior cingulate cortex, and posterior cingulate cortex when an immediate reward was possible for the observer herself, which is in line with findings from studies in which individuals actively chose immediately available rewards. Additionally, activation in the dorsal anterior cingulate cortex, posterior cingulate cortex, and precuneus was higher for choices that included immediate options than for choices that offered only delayed options, irrespective of who was to be the beneficiary. These results indicate that (1) the activations found in active intertemporal decision making are also present when the same decisions are merely observed, thus supporting the assumption that a robust brain network is engaged in immediate gratification; and (2) with immediate rewards, certain brain areas are activated irrespective of whether the observer or another person is the beneficiary of a decision, suggesting that immediacy plays a more general role for neural activation. An explorative analysis of participants' brain activation corresponding to chosen rewards, further indicates that activation in the aforementioned brain areas depends on the mere presence, availability, or actual reception of immediate rewards.

SUBMITTER: Albrecht K

PROVIDER: S-EPMC3749998 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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What do I want and when do I want it: brain correlates of decisions made for self and other.

Albrecht Konstanze K Volz Kirsten G KG Sutter Matthias M von Cramon D Yves DY

PloS one 20130822 8

A number of recent functional Magnetic Resonance Imaging (fMRI) studies on intertemporal choice behavior have demonstrated that so-called emotion- and reward-related brain areas are preferentially activated by decisions involving immediately available (but smaller) rewards as compared to (larger) delayed rewards. This pattern of activation was not seen, however, when intertemporal choices were made for another (unknown) individual, which speaks to that activation having been triggered by self-re ...[more]

PMID: 23991196

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Project description:Impulsivity transcends psychiatric diagnoses and is often related to anhedonia. This ad hoc cross-sectional investigation explored 1) whether self-reported trait impulsivity mapped onto a common structural brain substrate across healthy controls (HCs) and psychiatric patients, and 2) in a more exploratory fashion, whether impulsivity and anhedonia were related to each other and shared overlapping brain correlates. Structural magnetic resonance imaging (sMRI) datasets from 234 participants including HCs (n = 109) and patients with opioid use disorder (OUD, n = 22), cocaine use disorder (CUD, n = 43), borderline personality disorder (BPD, n = 45) and schizophrenia (SZ, n = 15) were included. Trait impulsivity was measured with the Barratt Impulsiveness Scale (BIS-11) and anhedonia with a subscore of the Beck Depression Inventory (BDI). BIS-11 global score data were available for the entire sample, while data on the BIS-11 2nd order factors attentional, motor and non-planning were additionally in hand for a subsample consisting of HCs, OUD and BPD patients (n = 116). Voxel-based morphometry analyses were conducted for identifying dimensional associations between grey matter volume and impulsivity/anhedonia. Partial correlations were further performed to exploratory test the relationships between impulsivity and anhedonia and their corresponding volumetric brain substrates. Volume of the left opercular part of the inferior frontal gyrus (IFG) was negatively related to global impulsivity across the entire sample and specifically to motor impulsivity in the subsample of HCs, OUD and BPD patients. Across patients anhedonia expression was negatively correlated with left putamen volume. Although there was no relationship between global impulsivity and anhedonia across all patients, only across OUD and BPD patients anhedonia was positively associated with attentional impulsivity. Finally, also across OUD and BPD patients, motor impulsivity associated left IFG volume was positively linked with anhedonia-associated volume in the left putamen. Our findings suggest a critical role of left IFG volume in self-reported global impulsivity across healthy participants and patients with substance use disorder, BPD and SZ. Preliminary findings in OUD and BPD patients further suggests associations between impulsivity and anhedonia that are related to grey matter reductions in the left IFG and putamen.

Project description:ObjectivesShared decision-making has continuously gained importance over the last years. However, few studies have investigated the current state of shared decision-making implementation in routine cancer care. This study aimed to investigate how treatment decisions are made in routine cancer care and to explore barriers and facilitators to shared decision-making using an observational approach (three independent observers). Furthermore, the study aimed to extend the understanding of current decision-making processes beyond the dyadic physician-patient interaction.DesignCross-sectional qualitative study using participant observation with semistructured field notes, which were analysed using qualitative content analysis as described by Hsieh and Shannon.Setting and participantsField notes from participant observations were collected at n=54?outpatient consultations and during two 1-week-long observations at two inpatient wards in different clinics of one comprehensive cancer centre in Germany.ResultsMost of the time, either one physician alone or a group of physicians made the treatment decisions. Patients were seldom actively involved. Patients who were 'active' (ie, asked questions, demanded participation, opposed treatment recommendations) facilitated shared decision-making. Time pressure, frequent alternation of responsible physicians and poor coordination of care were the main observed barriers for shared decision-making. We found high variation in decision-making behaviour between different physicians as well as the same physician with different patients.ConclusionMost of the time physicians made the treatment decisions. Shared decision-making was very rarely implemented in current routine cancer care. The entire decision-making process was not observed to follow the principles of shared decision-making. However, some aspects of shared decision-making were occasionally incorporated. Individual as well as organisational factors were found to influence the degree of shared decision-making. If future routine cancer care wishes to follow the principles of shared decision-making, strategies are needed to foster shared decision-making in routine cancer care.

Dataset Information

What do I want and when do I want it: brain correlates of decisions made for self and other.

Publications

What do I want and when do I want it: brain correlates of decisions made for self and other.

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