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Keith Summey North Charleston Library
Closed due to operational issues.
Phone: (843) 744-2489
Folly Beach Library
9 a.m. - 2 p.m.
*open the 2nd and 4th Saturday
*open the 2nd and 4th Saturday
Phone: (843) 588-2001
Main Library
9 a.m. - 5 p.m.
Phone: (843) 805-6930
West Ashley Library
9 a.m. - 5 p.m.
Phone: (843) 766-6635
Wando Mount Pleasant Library
9 a.m. - 5 p.m.
Phone: (843) 805-6888
McClellanville Library
9 a.m. – 1 p.m.
Phone: (843) 887-3699
Miss Jane's Building (Edisto Library Temporary Location)
9 a.m. – 1 p.m.
Phone: (843) 869-2355
John L. Dart Library
9 a.m. - 5 p.m.
Phone: (843) 722-7550
St. Paul's/Hollywood Library
9 a.m. - 5 p.m.
Phone: (843) 889-3300
Mt. Pleasant Library
9 a.m. – 5 p.m.
Phone: (843) 849-6161
Dorchester Road Library
9 a.m. - 5 p.m.
Phone: (843) 552-6466
Edgar Allan Poe/Sullivan's Island Library
9 a.m. - 1 p.m.
Phone: (843) 883-3914
John's Island Library
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Phone: (843) 559-1945
Otranto Road Library
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Phone: (843) 572-4094
Hurd/St. Andrews Library
9 a.m. - 5 p.m.
Phone: (843) 766-2546
Baxter-Patrick James Island
9 a.m. - 5 p.m.
Phone: (843) 795-6679
Bees Ferry West Ashley Library
9 a.m. - 5 p.m.
Phone: (843) 805-6892
Village Library
9 a.m. - 1 p.m.
Phone: (843) 884-9741
Mobile Library
Closed
Phone: (843) 805-6909
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Thinking and hallucinating: Reciprocal changes in sleep.
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- Author(s): Fosse, Roar; Stickgold, Robert; Hobson, J. Allan
- Source:
Psychophysiology; Mar2004, Vol. 41 Issue 2, p298-305, 8p, 5 Charts, 1 Graph- Subject Terms:
- Source:
- Additional Information
- Abstract: Internal deliberations (focused thoughts) and endogenous percepts (hallucinations) vary in a reciprocal manner across the states of waking and sleep, paralleling changes in regional brain activation. As subjects go from waking through sleep onset to NREM sleep and then to REM sleep, they report progressively more hallucinoid imagery and progressively less thinking. We have investigated whether this reciprocity in cognition between NREM and REM is maintained throughout the night. To do so, we analyzed 229 REM and 165 NREM reports collected with the Nightcap sleep monitoring system from 16 participants in their homes over 14 nights. The reports were scored for the presence of hallucinations and directed thinking by external judges. As predicted, hallucinations were more frequent in REM than in NREM for each segment of the night, and directed thinking was more frequent in NREM in the first 5 h of the night. Late in the night, directed thinking was equally infrequent in NREM and REM. At the same time, hallucinations increased within both NREM and REM as the night progressed, whereas directed thinking decreased in NREM and remained at a stable, low level in REM. These findings suggest that a reciprocal shift in focused thinking and hallucinating is a general property of cognitive activity across the wake–sleep cycle. Biological evidence supports the hypothesis that these cognitive changes are governed by specific state regulatory and neurocognitive processes at several levels of the brain. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Psychophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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