id sid tid token lemma pos 0v838052510 1 1 non non ADJ 0v838052510 1 2 - - ADJ 0v838052510 1 3 rapid rapid ADJ 0v838052510 1 4 eye eye NOUN 0v838052510 1 5 movement movement NOUN 0v838052510 1 6 ( ( PUNCT 0v838052510 1 7 nrem nrem PROPN 0v838052510 1 8 ) ) PUNCT 0v838052510 1 9 sleep sleep NOUN 0v838052510 1 10 is be AUX 0v838052510 1 11 known know VERB 0v838052510 1 12 to to PART 0v838052510 1 13 play play VERB 0v838052510 1 14 a a DET 0v838052510 1 15 critical critical ADJ 0v838052510 1 16 role role NOUN 0v838052510 1 17 in in ADP 0v838052510 1 18 episodic episodic ADJ 0v838052510 1 19 memory memory NOUN 0v838052510 1 20 consolidation consolidation NOUN 0v838052510 1 21 . . PUNCT 0v838052510 2 1 sleep sleep NOUN 0v838052510 2 2 spindles spindle NOUN 0v838052510 2 3 , , PUNCT 0v838052510 2 4 events event NOUN 0v838052510 2 5 in in ADP 0v838052510 2 6 the the DET 0v838052510 2 7 12 12 NUM 0v838052510 2 8 - - SYM 0v838052510 2 9 15 15 NUM 0v838052510 2 10 hz hz PROPN 0v838052510 2 11 range range NOUN 0v838052510 2 12 that that PRON 0v838052510 2 13 are be AUX 0v838052510 2 14 characteristic characteristic ADJ 0v838052510 2 15 of of ADP 0v838052510 2 16 nrem nrem PROPN 0v838052510 2 17 stage stage PROPN 0v838052510 2 18 2 2 NUM 0v838052510 2 19 sleep sleep NOUN 0v838052510 2 20 , , PUNCT 0v838052510 2 21 are be AUX 0v838052510 2 22 often often ADV 0v838052510 2 23 implicated implicate VERB 0v838052510 2 24 in in ADP 0v838052510 2 25 this this DET 0v838052510 2 26 process process NOUN 0v838052510 2 27 . . PUNCT 0v838052510 3 1 however however ADV 0v838052510 3 2 , , PUNCT 0v838052510 3 3 spindles spindle NOUN 0v838052510 3 4 also also ADV 0v838052510 3 5 occur occur VERB 0v838052510 3 6 during during ADP 0v838052510 3 7 slow slow ADJ 0v838052510 3 8 wave wave NOUN 0v838052510 3 9 sleep sleep NOUN 0v838052510 3 10 ( ( PUNCT 0v838052510 3 11 sws sws NOUN 0v838052510 3 12 ) ) PUNCT 0v838052510 3 13 , , PUNCT 0v838052510 3 14 and and CCONJ 0v838052510 3 15 it it PRON 0v838052510 3 16 remains remain VERB 0v838052510 3 17 unclear unclear ADJ 0v838052510 3 18 whether whether SCONJ 0v838052510 3 19 stage stage NOUN 0v838052510 3 20 2 2 NUM 0v838052510 3 21 sleep sleep NOUN 0v838052510 3 22 is be AUX 0v838052510 3 23 sufficient sufficient ADJ 0v838052510 3 24 to to PART 0v838052510 3 25 observe observe VERB 0v838052510 3 26 spindle spindle NOUN 0v838052510 3 27 - - PUNCT 0v838052510 3 28 related relate VERB 0v838052510 3 29 memory memory NOUN 0v838052510 3 30 benefits benefit NOUN 0v838052510 3 31 , , PUNCT 0v838052510 3 32 if if SCONJ 0v838052510 3 33 obtaining obtain VERB 0v838052510 3 34 sws sws PROPN 0v838052510 3 35 is be AUX 0v838052510 3 36 necessary necessary ADJ 0v838052510 3 37 as as ADV 0v838052510 3 38 well well ADV 0v838052510 3 39 , , PUNCT 0v838052510 3 40 or or CCONJ 0v838052510 3 41 if if SCONJ 0v838052510 3 42 the the DET 0v838052510 3 43 temporal temporal ADJ 0v838052510 3 44 coupling coupling NOUN 0v838052510 3 45 of of ADP 0v838052510 3 46 spindles spindle NOUN 0v838052510 3 47 and and CCONJ 0v838052510 3 48 lower low ADJ 0v838052510 3 49 frequency frequency NOUN 0v838052510 3 50 oscillations oscillation NOUN 0v838052510 3 51 in in ADP 0v838052510 3 52 sws sws PROPN 0v838052510 3 53 ( ( PUNCT 0v838052510 3 54 i.e. i.e. X 0v838052510 3 55 , , PUNCT 0v838052510 3 56 slow slow ADJ 0v838052510 3 57 oscillations oscillation NOUN 0v838052510 3 58 , , PUNCT 0v838052510 3 59 & & CCONJ 0v838052510 3 60 lt lt PROPN 0v838052510 3 61 ; ; PUNCT 0v838052510 3 62 1 1 NUM 0v838052510 3 63 hz hz PROPN 0v838052510 3 64 ) ) PUNCT 0v838052510 3 65 is be AUX 0v838052510 3 66 essential essential ADJ 0v838052510 3 67 for for ADP 0v838052510 3 68 memory memory NOUN 0v838052510 3 69 consolidation consolidation NOUN 0v838052510 3 70 . . PUNCT 0v838052510 4 1 to to PART 0v838052510 4 2 address address VERB 0v838052510 4 3 these these DET 0v838052510 4 4 possibilities possibility NOUN 0v838052510 4 5 , , PUNCT 0v838052510 4 6 the the DET 0v838052510 4 7 present present ADJ 0v838052510 4 8 study study NOUN 0v838052510 4 9 compared compare VERB 0v838052510 4 10 episodic episodic ADJ 0v838052510 4 11 memory memory NOUN 0v838052510 4 12 retention retention NOUN 0v838052510 4 13 after after ADP 0v838052510 4 14 a a DET 0v838052510 4 15 period period NOUN 0v838052510 4 16 of of ADP 0v838052510 4 17 active active ADJ 0v838052510 4 18 wakefulness wakefulness NOUN 0v838052510 4 19 , , PUNCT 0v838052510 4 20 a a DET 0v838052510 4 21 nap nap NOUN 0v838052510 4 22 containing contain VERB 0v838052510 4 23 stage stage NOUN 0v838052510 4 24 2 2 NUM 0v838052510 4 25 but but CCONJ 0v838052510 4 26 not not PART 0v838052510 4 27 sws sws PROPN 0v838052510 4 28 , , PUNCT 0v838052510 4 29 and and CCONJ 0v838052510 4 30 a a DET 0v838052510 4 31 nap nap NOUN 0v838052510 4 32 containing contain VERB 0v838052510 4 33 both both DET 0v838052510 4 34 stage stage NOUN 0v838052510 4 35 2 2 NUM 0v838052510 4 36 and and CCONJ 0v838052510 4 37 sws sws PROPN 0v838052510 4 38 . . PUNCT 0v838052510 5 1 this this DET 0v838052510 5 2 study study NOUN 0v838052510 5 3 also also ADV 0v838052510 5 4 examined examine VERB 0v838052510 5 5 relationships relationship NOUN 0v838052510 5 6 between between ADP 0v838052510 5 7 spindles spindle NOUN 0v838052510 5 8 , , PUNCT 0v838052510 5 9 slow slow ADJ 0v838052510 5 10 oscillations oscillation NOUN 0v838052510 5 11 , , PUNCT 0v838052510 5 12 and and CCONJ 0v838052510 5 13 their their PRON 0v838052510 5 14 crossfrequency crossfrequency NOUN 0v838052510 5 15 coupling coupling NOUN 0v838052510 5 16 in in ADP 0v838052510 5 17 relation relation NOUN 0v838052510 5 18 to to ADP 0v838052510 5 19 episodic episodic ADJ 0v838052510 5 20 memory memory NOUN 0v838052510 5 21 . . PUNCT 0v838052510 6 1 the the DET 0v838052510 6 2 results result NOUN 0v838052510 6 3 indicated indicate VERB 0v838052510 6 4 that that SCONJ 0v838052510 6 5 , , PUNCT 0v838052510 6 6 while while SCONJ 0v838052510 6 7 there there PRON 0v838052510 6 8 were be VERB 0v838052510 6 9 no no DET 0v838052510 6 10 significant significant ADJ 0v838052510 6 11 group group NOUN 0v838052510 6 12 differences difference NOUN 0v838052510 6 13 in in ADP 0v838052510 6 14 memory memory NOUN 0v838052510 6 15 performance performance NOUN 0v838052510 6 16 , , PUNCT 0v838052510 6 17 slow slow ADJ 0v838052510 6 18 oscillations oscillation NOUN 0v838052510 6 19 in in ADP 0v838052510 6 20 sws sws PROPN 0v838052510 6 21 significantly significantly ADV 0v838052510 6 22 predicted predict VERB 0v838052510 6 23 the the DET 0v838052510 6 24 retention retention NOUN 0v838052510 6 25 of of ADP 0v838052510 6 26 episodic episodic ADJ 0v838052510 6 27 information information NOUN 0v838052510 6 28 across across ADP 0v838052510 6 29 a a DET 0v838052510 6 30 90 90 NUM 0v838052510 6 31 - - PUNCT 0v838052510 6 32 minute minute NOUN 0v838052510 6 33 nap nap NOUN 0v838052510 6 34 . . PUNCT 0v838052510 7 1 however however ADV 0v838052510 7 2 , , PUNCT 0v838052510 7 3 memory memory NOUN 0v838052510 7 4 retention retention NOUN 0v838052510 7 5 was be AUX 0v838052510 7 6 not not PART 0v838052510 7 7 significantly significantly ADV 0v838052510 7 8 predicted predict VERB 0v838052510 7 9 by by ADP 0v838052510 7 10 spindles spindle NOUN 0v838052510 7 11 in in ADP 0v838052510 7 12 either either DET 0v838052510 7 13 stage stage NOUN 0v838052510 7 14 2 2 NUM 0v838052510 7 15 or or CCONJ 0v838052510 7 16 sws sws NOUN 0v838052510 7 17 , , PUNCT 0v838052510 7 18 nor nor CCONJ 0v838052510 7 19 was be AUX 0v838052510 7 20 it it PRON 0v838052510 7 21 predicted predict VERB 0v838052510 7 22 by by ADP 0v838052510 7 23 the the DET 0v838052510 7 24 temporal temporal ADJ 0v838052510 7 25 coupling coupling NOUN 0v838052510 7 26 of of ADP 0v838052510 7 27 slow slow ADJ 0v838052510 7 28 oscillations oscillation NOUN 0v838052510 7 29 and and CCONJ 0v838052510 7 30 spindles spindle NOUN 0v838052510 7 31 in in ADP 0v838052510 7 32 sws sws PROPN 0v838052510 7 33 . . PUNCT 0v838052510 8 1 although although SCONJ 0v838052510 8 2 these these DET 0v838052510 8 3 findings finding NOUN 0v838052510 8 4 suggest suggest VERB 0v838052510 8 5 that that SCONJ 0v838052510 8 6 a a DET 0v838052510 8 7 daytime daytime ADJ 0v838052510 8 8 nap nap NOUN 0v838052510 8 9 may may AUX 0v838052510 8 10 affect affect VERB 0v838052510 8 11 episodic episodic ADJ 0v838052510 8 12 memory memory NOUN 0v838052510 8 13 consolidation consolidation NOUN 0v838052510 8 14 via via ADP 0v838052510 8 15 sws sws ADJ 0v838052510 8 16 - - PUNCT 0v838052510 8 17 specific specific ADJ 0v838052510 8 18 mechanisms mechanism NOUN 0v838052510 8 19 , , PUNCT 0v838052510 8 20 further further ADJ 0v838052510 8 21 research research NOUN 0v838052510 8 22 is be AUX 0v838052510 8 23 needed need VERB 0v838052510 8 24 to to PART 0v838052510 8 25 understand understand VERB 0v838052510 8 26 the the DET 0v838052510 8 27 role role NOUN 0v838052510 8 28 of of ADP 0v838052510 8 29 spindles spindle NOUN 0v838052510 8 30 , , PUNCT 0v838052510 8 31 slow slow ADJ 0v838052510 8 32 oscillations oscillation NOUN 0v838052510 8 33 , , PUNCT 0v838052510 8 34 and and CCONJ 0v838052510 8 35 their their PRON 0v838052510 8 36 cooccurrence cooccurrence NOUN 0v838052510 8 37 for for ADP 0v838052510 8 38 episodic episodic ADJ 0v838052510 8 39 memory memory NOUN 0v838052510 8 40 consolidation consolidation NOUN 0v838052510 8 41 . . PUNCT