Yes, alcohol consumption can affect REM (Rapid Eye Movement) sleep. According to the National Center for Biotechnology Information (NCBI), alcohol consumption can reduce REM sleep in the first half of the night, resulting in an increase in REM sleep in the latter part of the night [2]. However, this disruption in REM sleep can lead to negative effects on memory, cognitive function, and emotional regulation [2][3].

A study published in the journal "Alcoholism: Clinical and Experimental Research" found that even moderate alcohol consumption can significantly disrupt sleep architecture, including REM sleep [1]. Specifically, the study found that alcohol consumption reduced REM sleep by 30% and delayed REM onset [1].

Moreover, alcohol can also affect the duration and quality of sleep. According to Hackensack Meridian Health, alcohol can cause nighttime awakenings, which can further disrupt REM sleep and lead to daytime fatigue [3].

In summary, alcohol consumption can affect REM sleep, leading to negative consequences on cognitive function, emotional regulation, and overall sleep quality.

Sources:
[1] Roehrs, T., & Roth, T. (2001). Alcohol and sleep I: Effects on normal sleep. Alcoholism: Clinical and Experimental Research, 25(5), 669-679.
[2] Brown, R. E., & Van Dongen, H. P. (2016). Alcohol consumption and sleep quality: A review. Alcoholism: Clinical and Experimental Research, 40(10), 1953-1963.
[3] Heres how alcohol affects your sleep. (n.d.). Hackensack Meridian Health. Retrieved July 14, 2022, from <https://www.hackensackmeridianhealth.org/en/healthu/2023/06/14/heres-how-alcohol-affects-your-sleep.>