---
title: Most vivid dreams happen in REM sleep, when the eyes dart about unde… — The brain and nerves · tree and pragmatics
description: Most vivid dreams happen in REM sleep, when the eyes dart about under the eyelids; everyone dreams several times a night, even if they forget. Who acts: Most vivid dreams, eyes, everyone. A sentence of the lesson «The brain and nerves» of the biology course of Mova's primary school with its dependen
---

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# The brain and nerves, sentence 13

<!-- .ven lang=en -->
Most vivid dreams happen in REM sleep, when the eyes dart about under the eyelids; everyone dreams several times a night, even if they forget.

<!-- .vintro -->
**Who acts:** Most vivid dreams, eyes, everyone · **What happens:** happen, dart about, dream, forget · **To what, where:** REM sleep, eyelids

<!-- .vabout -->
This is a sentence of the lesson «The brain and nerves» of the biology course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Most vivid dreams, eyes, everyone), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:068-the-brain-and-nerves.lesson:13
# text = Most vivid dreams happen in REM sleep, when the eyes dart about under the eyelids; everyone dreams several times a night, even if they forget.
# source = school lesson (ours)
# course = biology
# lesson = 068-the-brain-and-nerves.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×2
1	Most	most	ADJ	JJS	Degree=Sup	3	amod	_	_
2	vivid	vivid	ADJ	JJ	Degree=Pos	3	amod	_	_
3	dreams	dream	NOUN	NNS	Number=Plur	4	nsubj	_	_
4	happen	happen	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	in	in	ADP	IN	_	7	case	_	_
6	REM	rem	NOUN	NN	Number=Sing	7	compound	_	_
7	sleep	sleep	NOUN	NN	Number=Sing	4	obl	_	_
8	,	,	PUNCT	,	_	12	punct	_	_
9	when	when	ADV	WRB	PronType=Rel	12	advmod	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	eyes	eye	NOUN	NNS	Number=Plur	12	nsubj	_	_
12	dart	dart	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	advcl	_	Agree=R5-strong|Haiku=7:acl:relcl
13	about	about	ADV	RB	_	12	advmod	_	Agree=R5-strong|Haiku=16:case|HaikuPos=ADP:IN:_
14	under	under	ADP	IN	_	16	case	_	_
15	the	the	DET	DT	Definite=Def|PronType=Art	16	det	_	_
16	eyelids	eyelid	NOUN	NNS	Number=Plur	12	obl	_	_
17	;	;	PUNCT	,	_	19	punct	_	_
18	everyone	everyone	PRON	NN	Number=Sing|PronType=Tot	19	nsubj	_	_
19	dreams	dream	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	parataxis	_	_
20	several	several	ADJ	JJ	Degree=Pos	21	amod	_	_
21	times	time	NOUN	NNS	Number=Plur	19	obl:unmarked	_	_
22	a	a	DET	DT	Definite=Ind|PronType=Art	23	det	_	_
23	night	night	NOUN	NN	Number=Sing	21	nmod:unmarked	_	_
24	,	,	PUNCT	,	_	28	punct	_	_
25	even	even	ADV	RB	_	28	advmod	_	_
26	if	if	SCONJ	IN	_	28	mark	_	_
27	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	28	nsubj	_	_
28	forget	forget	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	19	advcl	_	_
29	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **happen** | present | Most vivid dreams |  |  | REM sleep |  |  | vn occur-48.3-1 «NP V PP»: agent=Theme in sleep=Location |
| 2 | **dart about** | present | the eyes |  |  | the eyelids |  | about *property* | vn run-51.3.2-2 «NP V PP.location»: agent=Theme under eyelid=Trajectory |
| 3 | **dream** | present | everyone |  |  |  | time |  | vn cognize-85 «NP V PP.topic»: agent=Agent |
| 4 | **forget** *a condition, not said to happen* | present | eyes *= eye* |  |  |  |  |  | tree rules |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:biology:068-the-brain-and-nerves.lesson:13`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×2. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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