Short inter-stimulus intervals can be used for olfactory electroencephalography in patients of varying olfactory function
Short inter-stimulus intervals can be used for olfactory electroencephalography in patients of varying olfactory function
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短刺激间隔可用于不同嗅觉功能患者的嗅觉脑电图
DOI:
10.1016/j.neuroscience.2017.08.046
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发表时间:
2017
期刊:
影响因子:
3.3
通讯作者:
Thomas Hummel
中科院分区:
文献类型:
--
作者:
K. Whitcroft;K. Whitcroft;K. Whitcroft;M. Aziz;Ilona Croy;Valentin A. Schriever;Thomas Hummel
Use of chemosensory event-related potentials (ERPs) is limited by relatively poor signal-to-noise ratios (SNRs). We hypothesized that by reducing the standard inter-stimulus interval (ISI), the increased number of trial repetitions possible may increase SNR. In order to further investigate this, we performed the largest study to date assessing chemosensory ERP using short and long ISIs in 101 participants of varying olfactory function. Using rose odor (phenylethylalcohol, PEA) as a relatively selective olfactory stimulant, we found no significant difference in the proportion of individuals in whom ERPs were recorded using short or long ISIs. This was true in normosmic, hyposmic and functionally anosmic individuals. We also demonstrated significantly increased SNR using short PEA-ISIs, in the normosmic and functionally anosmic groups. Comparing between groups of different olfactory function, hyposmic patients achieved faster onsets and greater amplitudes than normosmics under the PEA-10s protocol. This could be due to increased stimulus attendance, but requires confirmation with further research.
影响因子:
3.5
作者:
Dalton, P
通讯作者:
Dalton, P
影响因子:
3
作者:
Murphy, C;Morgan, CD;Polich, JM
通讯作者:
Polich, JM
DOI:
10.1016/s0168-5597(97)00020-8
发表时间:
1997
期刊:
Electroencephalography and clinical neurophysiology
影响因子:
--
作者:
Morgan,CD;Covington,JW;Geisler,MW;Polich,J;Murphy,C
通讯作者:
Murphy,C