Prognostic Value of Motor Timing in Treatment Outcome in Patients With Alcohol- and/or Cocaine Use Disorder in a Rehabilitation Program

Blunted neural reward response to alcohol and greater alcohol motivation in binge drinkers in a randomized clinical experiment

BACKGROUND

Alcohol stimulates cerebral blood flow (CBF) in brain reward regions. However, neural processes that support sustained alcohol motivation after the first drink are not well understood.

METHODS

Using a novel placebo-controlled, randomized, crossover experiment, 27 individuals who binge drink (BD; 15 M, 12 F) and 25 social drinkers (SD; 15 M, 10 F) underwent a behavioral test of self-motivated alcohol consumption using an Alcohol Taste Test (ATT) involving alcoholic and nonalcoholic beer on separate days. The test was followed immediately by perfusion functional magnetic resonance imaging (fMRI). On both days, participants then engaged in a post-scan ATT with placebo beer to assess sustained alcohol self-motivation without active alcohol effects. Linear mixed effects models were used to examine the effects of drinking group on the placebo-controlled effect of initial alcohol motivation on brain perfusion (whole brain corrected p < 0.001, cluster corrected p < 0.025) and on the relationship between placebo-controlled brain perfusion and sustained alcohol motivation.

RESULTS

Initial alcohol self-motivation in the alcohol relative to placebo session led to markedly decreased activation in the medial orbitofrontal cortex (OFC) and the ventral striatum in BD relative to SD, indicative of neural reward tolerance. The BD group also showed an enhanced neural response in behavioral intention regions of the supplementary motor area (SMA) and inferior frontal gyrus (IFG) regions. Moreover, there was greater sustained alcohol motivation in BD than SD in the post-scan ATT in the alcohol relative to placebo session. Correspondingly, only in BD and only in the alcohol session, lower alcohol-induced OFC response correlated with concurrent sensitized SMA response, and each predicted the subsequent sustained higher alcohol motivation in the post-scan ATT.

CONCLUSIONS

Alcohol-related OFC tolerance may play an important role in sustained alcohol motivation. Furthermore, both specific alcohol-related neural reward tolerance and premotor sensitization responses may contribute to escalating alcohol motivation to drive excessive alcohol intake, even in individuals without alcohol use disorder.

Visual Art Intervention for People With Stroke on Holistic Well-Being: A Critical Review

Background: After a stroke, a person usually experiences physical, psychosocial, and spiritual consequences, causing distortion of holistic well-being. Existing studies using visual art interventions found some benefits to physiological, psychosocial, and/or spiritual well-being of people with stroke, but little is known about holistic well-being. Objectives: This critical review to identify how visual art interventions are delivered to people with stroke on holistic well-being. Methods: Databases were searched up to September 30, 2019, for published studies on "stroke" AND "art*/visual art*," AND "holistic well*being." Results: Ten studies were included. Heterogeneity was found in study characteristics, intervention modalities, outcome measures, and methodology issues or a lack of clarity in theoretical application. Most participants were people with stroke, with only two studies recruited older people with stroke. All studies were conducted in rehabilitation units or communities, and none in residential care settings. One study reported the effects on holistic well-being. The appraised quality of the included studies was variable. Conclusion: Stroke impacts the holistic well-being of a person, but little has been known for older people with stroke. It remains unclear how visual art interventions can be delivered and benefit the holistic well-being of older people with stroke in residential care settings.