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, 17 (4), 503-508

Difference in Cognitive Function by First Onset Age of Alcohol Induced Blackout and Its Duration


Difference in Cognitive Function by First Onset Age of Alcohol Induced Blackout and Its Duration

Eun-Jeong Min et al. Clin Psychopharmacol Neurosci.


Objective: Alcohol-induced blackout (blackout) is a typical early symptom of cognitive impairment caused by drinking. However, the first onset age of blackout or the duration after onset of blackout has not been directly compared in previous studies. The purpose of this study was to investigate the differences in cognitive function to the first start age of blackouts and their duration.

Methods: Thirty-one male subjects were included in this study. Their age at the first blackout and the duration after the onset of blackout were investigated. Neuropsychological tests were conducted to determine their attention, memory, and executive function. Subjects were divided into three groups according to their age of the first onset blackout (group O1, < 20 years; group O2, 21-39 years; and group O3, > 40 years). Subjects were also divided into three groups by duration after the onset of blackout (P1, < 10 years; P2, 10-29 years; and P3, > 30 years). We then examined differences in neurocognitive function among these groups.

Results: O1 tended to have a lower memory score than O2 (F = 3.28, p = 0.053). Significant differences were observed in attention and executive function between groups P1 and P3 (Digit Span_backward: F = 6.07, p < 0.05; visual span_forward: F = 4.19, p < 0.05; executive intelligence quotient: F = 3.55, p < 0.05).

Conclusion: Greater memory impairment was detected in subjects having an earlier age of the first blackout. The longer the duration after the onset of blackout, the more impaired their attention and executive function skills.

Keywords: Addiction medicine.; Alcohol-induced blackout; Alcohol-induced disorder; Cognition; Retrograde amnesia.

Conflict of interest statement

Conflicts of Interest

No potential conflict of interest relevant to this article was reported.


Fig. 1
Fig. 1
Differences in memory by the first onset age of blackout. MQ, memory quotient; O1, ≤ 20 years old; O2, 21–39 years old; O3, ≥40 years old. *p < 0.05.
Fig. 2
Fig. 2
Differences in attention by duration after onset age of blackout. Digit Span_B, Digit span_backward; Visual span, visual span_forward; P1, ≤ 10 years period; P2, 11–29 years period; P3, ≥ 30 years period. *p < 0.05.
Fig. 3
Fig. 3
Differences in executive function by duration after onset age of blackout. EIQ, executive intelligence quotient; P1, ≤ 10 years period; P2, 11–29 years period; P3, ≥ 30 years period. *p < 0.05.

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