有人作夢是第三人稱的，也就是夢中的自己並不是自己而是他人（或動物），我知道後覺得很新鮮，很好奇為什麼。
英文討論串裏，有非專業人士說REM時期的夢是第一人稱，非REM時期的夢是第三人稱。
但我從Google Book查到下面的書，第三段是關於這個問題，說得反而相反，是REM時期顳葉與頂葉銜接處右側的活動降低，導致第一人稱與第三人稱的區別降低，所以才會作第三人稱的夢。
可是我就不懂了，作夢主要是在REM時期，醒來時記得的夢，也應該是在REM時期，為什麼我從來沒作過第三人稱的夢？
參考此篇：睡眠的階段
http://www.dls.ym.edu.tw/neuroscience/sleep_c.html
The Boundaries of Consciousness: Neurobiology and Neuropathology
Steven Laureys （編者）
Elsevier, Jun 9, 2006
頁225：
The frontal (額葉的) and parietal (頂葉的) areas and mind representation during REM sleep
The medial frontal (二字：額葉內側) areas are active during REM sleep (快速眼動睡眠) as during wakefulness. In this respect, REM sleep is very different from SWS (慢波睡眠) because the same regions are relatively less active in SWS, as compared to either wakefulness or REM sleep. Theory of mind refers to the ability to attribute intentions, thoughts and feelings to oneself and to others (Carruthers and Smith, 1996). It is an inductive reasoning allowing interpretation and understanding of others actions and speech, and prediction of their behavior. In comparison to reasoning applied to physical events or to lower level tasks, theory of mind was shown to reliably involve medial prefrontal cortex (三字：前額葉皮質內側), temporo-parietal (顳骨的-頂骨的) junction especially in the right hemisphere and temporal (顳骨的) poles (Fletcher et al., 1995; Brunet et al., 2000, for a review Frith, 2001 ).
Dreaming usually appears as a multisensorial narrative involving characters interacting with each other. These oneiric (夢一般的) characters are credited thoughts, intentions, and emotions by the dreamer himself. Mind representation is thus a key feature of dreaming. We hypothesize that the persistence of a level of activity in the medial frontal areas similar to the activity observed during wakefulness might participate to mind representation during REM sleep.
However, during REM sleep, the preserved activity in the medial prefrontal areas (as compared to wakefulness) contrasts with the low activity in the inferior parietal cortex (三字：頂葉皮質下側). In the right hemiphere, this area is a part of the network activated during mind representation at wakefulness and is involved in the distinction of first versus third person perspective in the representation of action, mind and emotion (Ruby and Decety. 2001, 2003, 2004; Chaminade and Decety. 2002: Farrer et al. 2003). During REM sleep, the low activation of the right temporo-parietal junction might be related to a loosening in the distinction between first and third level perspectives. Accordingly, in dream report, the self can participate to the dream action both in a first-person (i.e., the self sees and act) and in a third-person perspective (i.e., the dreamer sees the self acting in the dream).
Finally, social emotion such as jealousy, pride, embarrassment, infatuation. sexual love, shame. guilt and pride are often reported in dreaming (Adolphs, 2002; Schwartz and Maquet, 2002). Neuropsychological and neuroimaging studies in humans have demonstrated that medial prefrontal cortex and amygdala (杏仁核) are consistently involved in basic and social emotions processing and more generally in social cognition (Adolphs, 1999; Phan et al., 2002; Ruby and Decety, 2004). The amygdala are known to be very active during REM sleep (Maquet et al., 1996). The preserved activity in the medial prefrontal cortex might also account for the high proportion of dreams involving social emotions. |
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