Abstract：
:Neutral buoyancy facilities are used to prepare astronauts and cosmonauts for extra vehicular activities e.g. on-board of the International Space Station. While previous studies indicated a decrease in cognitive performance in an under water setting, they have only provided behavioural data. This study aimed to review whether recording of electro cortical activity by the use of electroencephalography (EEG) is possible in an under water setting and if so, to identify the influence of water immersion at a depth of 4 m on neurocognitive markers. Ten male subjects performed a cognitive choice-reaction times (RT) task that progressed through five levels of increasing difficulty on land and when submerged 4 m under water. N200 latency and amplitude in the occipital and frontal areas were measured, and baseline cortical activity was measured during rest in both conditions. Neither RT nor amplitude or latency of the N200 showed any significant changes between the land and the under water conditions. Also theta, alpha and beta frequencies showed no differences between the two conditions. The data provided in this study demonstrate the possibility of recording EEG even under the extreme conditions of full body water immersion. The lack of cognitive impairment in RT and N200 in the under water condition may be explained by the fact that only experienced divers participated in the study. As a proof of principle, this study generates many new experimental possibilities that will improve our understanding of cognitive processes under water.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Schneider S,Cheung JJ,Frick H,Krehan S,Micke F,Sauer M,Dalecki M,Dern Sdoi
10.1007/s00221-014-4019-5subject
Has Abstractpub_date
2014-10-01 00:00:00pages
3325-31issue
10eissn
0014-4819issn
1432-1106journal_volume
232pub_type
杂志文章abstract：:Electrical activity of neurons in rat hypothalamic ventromedial nucleus was recorded in tissue slices, to investigate central neural mechanisms underlying reduction of food intake caused by TRH and its metabolite, cyclo(His-Pro) [cHP]. Application of TRH had two actions: stimulation of neuronal activity, which was des...
journal_title：Experimental brain research
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journal_title：Experimental brain research
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pub_type： 杂志文章
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journal_title：Experimental brain research
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journal_title：Experimental brain research
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journal_title：Experimental brain research
pub_type： 杂志文章
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00238755
更新日期：1981-01-01 00:00:00
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doi：10.1007/s00221-003-1523-4
更新日期：2003-09-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章,评审
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更新日期：2007-09-01 00:00:00
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journal_title：Experimental brain research
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journal_title：Experimental brain research
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journal_title：Experimental brain research
pub_type： 杂志文章
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