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Longterm effects of cannabis and amphetamin use and social-emotional brainfunctions

Longterm effects of cannabis and amphetamin use and social-emotional brainfunctions

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
DRKS
Registry ID
DRKS00004526
Enrollment
150
Registered
2013-03-11
Start date
2013-06-01
Completion date
Unknown
Last updated
2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

F15.2 F12.2

Interventions

Group 1: probands with cannabinoid dependence: fMRT: two task to test the processing of social-emotional cues. During the fMRI-procedure the probands will take part in an animated ball tossing game (C

Sponsors

Ministerium für Innovation, Wissenschaft, Forschung und Technologie
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 60 Years

Inclusion criteria

Inclusion criteria: Cannabinoid-dependence, Amphetamin-dependence according to the criteria of the ICD-10: control group: persons without any mental disorder and no consumption of any illicit drugs more than five times in life

Exclusion criteria

Exclusion criteria: Epilepsy, apoplexia, multiple sclerosis, myasthenia gravia, coronary heart disease, Diabetes Mellitus, chronic obstructive pulmonary diseases, psychiatric medication, long-term medication (exception: contraceptives), consumption of legal or illegal psychotropic drugs during the last 28 days (exception: nicotine, alcohol), alcohol consumption for the day of the procedure, heart/head operation, hearing aids, cardiac pacemaker, drug pumps, removable dental protheses, metal parts in or around the body (e. g. metal shivers, artificial hip-joints, acupuncture devices, implanted, electrodes, unremovable piercings, metal-containing tattoos), claustrophobia, pregnancy, lactation, unsecure contraception, axis I or II mental disorder (DSM-IV) except cannabis or amphetamin dependence. consumption of acohol more than twice a month excessively or frequent heavy drinkung during the past six month.

Design outcomes

Primary

MeasureTime frame
Procentual personal signal change of the fMRI-signal in the task related target areas. measurement during the processing of the socia-emotional tasks and before and after taking part in the virtual ball game (Cyberball).

Secondary

MeasureTime frame
General parameters of social-cognitive functions, measured by the emotional recognition task. Effects of taking part in the cyberball game in the manipulation check using the need-threat-scale. Group differences on the rejection sensitivity scale with pre-post-comparison.

Countries

Germany

Contacts

Public ContactWolfgang Dau

LVR-Klinik Bonn, Abt. für Abhängigkeitserkrankungen und Psychotherapie

Wolfgang.Dau@lvr.de0228-551-2363

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026