Gabriel Rubio Valladolid, MD
Instituto de Salud Carlos III
This is an experimental study in which the efficacy of three psychophysiological intervention modalities based on retrieval-extinction procedures is analyzed.
- Behavioral: Retrieval-Extinction LearningThe intervention consists of the accomplishment of the task of approach-avoidance of alcohol during 4 days of training. Subjects are instructed to respond with an approach movement (pulling a lever) to neutral images and to respond with avoidance movement (pushing the lever) to images of alcohol.
|Ages eligible for Study||18 Years and older|
|Genders eligible for Study||All|
|Accepts Healthy Volunteers||No|
- Alcohol-dependent patients who have been detoxified and abstinent take 10-14 days.
- Patients who do not sign the informed consent.
Behavioral inhibition processes are a particularly relevant in relapses of patients with alcohol dependence. One of the current behavioral techniques to improve inhibitory abilities of these patients is the alcohol Approach Avoidance Task (AAT). However, this technique could be more efficient if patients, before training in this task, were exposed to a variety of alcohol-conditioned stimuli (retrieval) and take advantage of the window period of reconsolidation of these memories to carry out this task (extinction training). This project will attempt to show the pattern of brain connectivity underlying retrieval-extinction learning, its relationship with markers such as Brain-Derived Neurotrophic Factor (BDNF) and their usefulness to reduce relapses of individual with alcohol dependence. To carry out this study 115 patients with alcohol dependence who will be randomized into three groups: Group 1 (N = 35) where the extinction training is performed within the window period (10 minutes); Group 2 (N = 35) extinction will take place outside the time window (6 hours); Group 3 (N = 35), these subjects will be exposed to "non-retrieval" but with extinction-training within the window period. Changes in connectivity will be assessed with Electroencephalogram (EEG) at baseline and after 4 training sessions, using the HERMES platform. BDNF levels will be determined as peripheral markers of neurogenesis. These changes will be are correlated with relapses in the 12 weeks of follow-up.
- Hospital Universitario 12 de OctubrerecruitingMadrid, Spain, 28041
31 December, 2015
06 February, 2017