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Evaluation of Negative Symptoms and Cognitive Function After Administration of Antipsychotics in Healthy Volunteer

Evaluation of Negative Symptoms and Cognitive Function After Administration of Antipsychotics in Healthy Volunteer: a Double-blind, Randomized Trial of a Single Dose of Placebo, Haloperidol, Amisulpride, Risperidone and Aripiprazole

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT01185418
Enrollment
80
Registered
2010-08-20
Start date
2009-03-31
Completion date
2009-07-31
Last updated
2010-08-20

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

Conditions

Normal Volunteers

Brief summary

The aim of the study is to investigate the negative symptoms and cognitive function after administration of antipsychotics in healthy volunteer.

Interventions

DRUGrisperidone
DRUGaripiprazole
DRUGhaloperidol
DRUGamisulpride
DRUGlactose

Sponsors

Chonbuk National University Hospital
Lead SponsorOTHER

Study design

Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to 38 Years
Healthy volunteers
Yes

Inclusion criteria

* Aged 18-38 years and meet no DSM-IV diagnostic criteria as assessed by using the Structured Clinical Interview for DSM-IV, research version.

Exclusion criteria

* 1\) anyone who participated in other clinical trials within 30 days from the start of this clinical trial or is currently participating in one, * 2\) anyone who has progressive disease or in unstable medical condition unfit for the trial, * 3\) anyone who has been diagnosed in psychiatric terms in the past, depends on psychotropic substance, or has overdosed or depended on the substance or alcohol (except for coffee or tobacco) within 1 month from the trial start, * 4\) anyone who is suicidal or highly probable of suicides, or * 5\) anyone who has test results considered clinically meaningful

Design outcomes

Primary

MeasureTime frameDescription
Symptoms assessment by objective and subjective rating scale2 hourVAS - mental sedation (alert-drowsy, muzzy-clear headed, mentally slow-quick witted, attentive-dreamy), physical sedation (strong-feeble, well coordinated-clumsy, lethargic-energetic, incompetent-proficient), tranquilization (calm-excited, contented-discontented, troubled-tranquil, tense-relaxed)
Symptoms assessment by objective and subjective rating scales & CNT4hourSANS-alogia and blunted affect, SDSS-Subjective Deficit Syndrome Scale ,self-report questionnaire to measure lack of energy, blunted affect, and difficulty in or altered thinking, consisting of 19 questions, with the scales from 0 to 4 NIDSS-consists of 20 items with a five-point Likert scale (from 0, none to 4, severe) and has three subscales: avolition (five items), blunted affect (five items), and cognition (ten items), CNT-computerized neuropsychological test, VAS
Symptoms assessment by objective and subjective rating scales24hourSANS, SDSS, NIDSS, VAS SANS-alogia and blunted affect, SDSS-Subjective Deficit Syndrome Scale ,self-report questionnaire to measure lack of energy, blunted affect, and difficulty in or altered thinking, consisting of 19 questions, with the scales from 0 to 4 NIDSS-consists of 20 items with a five-point Likert scale (from 0, none to 4, severe) and has three subscales: avolition (five items), blunted affect (five items), and cognition (ten items), VAS

Secondary

MeasureTime frameDescription
Symptoms assessment by objective rating scale4hourBARS-Barnes akathisia rating scale (BAS), consisting of 4 items, identifies drug-induced akathisia and measures severity, SAS-Simpson-angus scale (SAS), consisting of 10 items, measures neuroleptic induced parkinsonism

Countries

South Korea

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026