There was recently published the paper "Dreams of the deceased: A scoping and mixed-methods systematic review" by Zulkayda Mamat and others. Here are some highlights:
- "Liang & He [38] reported that the theme 'a person now dead as alive' ranked among the top three most common dream types across Naxi (82.1 %) and Han (49.7 %) Chinese college students. Similarly, Yoshioka [39] found this theme to be the third most frequent in a Japanese sample (n = 559), with higher prevalence among women. In Germany, Kunzendorf and colleagues [40] found that 44 % of subjects reported at least one dream of a deceased relative or friend."
- "Yoshioka [39] found an increasing prevalence with age, rising from 0 % among youth (18–25 years) to 15 % among those aged 65 and above. Maggiolini and colleagues [41] corroborated these findings in a larger study (n = 1546), reporting higher frequencies of such dreams among older participants...Among participants aged 60+, prevalence ranged from 39.6 % to 56.1 %, compared to 8.9 %–29.5 % in those aged 18–59 [42]."
- "In Canadian nursing homes, 64 % of staff observed residents reporting vivid dreams of deceased people or pets [19]. Among Canadian hospice volunteers, 44 % reported witnessing similar dreams [18]. In India, 50 % of terminally ill patients reported seeing deceased relatives, friends, or acquaintances in dreams [20]. In U.S. hospice patients, 46 % reported dreams or visions of deceased relatives or friends, making them the most frequent end-of-life experience in this sample [55]. In Moldova, caregivers reported that deceased mothers were the most common figures in deathbed visions, with a median of two deceased visitors per patient [35]."
- "Most respondents’ dreams of the deceased were pleasant (55.3 %) or a mix of pleasant and disturbing (31.1 %), while fewer were only disturbing (6.8 %); common themes included pleasant past memories (65.2 %), the deceased appearing free of illness (40.4 %), memories of their illness (34.8 %), seeing them peaceful in the afterlife (26.7 %), or the deceased communicating a message (25.5 %)."



















