Lichan Liu
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Explore the profile of Lichan Liu including associated specialties, affiliations and a list of published articles.
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18
Citations
177
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Recent Articles
1.
Ioannides A, Orphanides G, Liu L
Curr Res Physiol
. 2022 Mar;
5:118-141.
PMID: 35243361
High amplitude electroencephalogram (EEG) events, like unitary K-complex (KC), are used to partition sleep into stages and hence define the hypnogram, a key instrument of sleep medicine. Throughout sleep the...
2.
Ioannides A, Liu L, Kostopoulos G
Front Neurosci
. 2019 Aug;
13:814.
PMID: 31447635
The large multicomponent K-complex (KC) and the rhythmic spindle are the hallmarks of non-rapid eye movement (NREM)-2 sleep stage. We studied with magnetoencephalography (MEG) the progress of light sleep (NREM-1...
3.
Turnbull L, Hutt M, Ioannides A, Kininmonth S, Poeppl R, Tockner K, et al.
Appl Netw Sci
. 2019 Mar;
3(1):11.
PMID: 30839779
In recent years, parallel developments in disparate disciplines have focused on what has come to be termed ; a concept used in understanding and describing complex systems. Conceptualisations and operationalisations...
4.
Ioannides A, Liu L, Poghosyan V, Kostopoulos G
Front Hum Neurosci
. 2017 Jul;
11:313.
PMID: 28670270
We used tomographic analysis of MEG signals to characterize regional spectral changes in the brain at sleep onset and during light sleep. We identified two key processes that may causally...
5.
Ioannides A, Liu L, Poghosyan V, Saridis G, Gjedde A, Ptito M, et al.
Front Hum Neurosci
. 2013 Aug;
7:429.
PMID: 23935576
Cross-modal activity in visual cortex of blind subjects has been reported during performance of variety of non-visual tasks. A key unanswered question is through which pathways non-visual inputs are funneled...
6.
Ioannides A, Dimitriadis S, Saridis G, Voultsidou M, Poghosyan V, Liu L, et al.
Comput Math Methods Med
. 2012 Oct;
2012:452503.
PMID: 23097678
How the brain works is nowadays synonymous with how different parts of the brain work together and the derivation of mathematical descriptions for the functional connectivity patterns that can be...
7.
Ioannides A, Poghosyan V, Liu L, Saridis G, Tamietto M, Op de Beeck M, et al.
Neuroimage
. 2012 Aug;
63(3):1464-77.
PMID: 22877580
The spatiotemporal profiles of visual processing are normally distributed in two temporal phases, each lasting about 100 ms. Within each phase, cortical processing begins in V1 and traverses the visual...
8.
Ioannides A, Fenwick P, Pitri E, Liu L
Nonlinear Biomed Phys
. 2010 Jun;
4 Suppl 1:S11.
PMID: 20522261
Background: Identifying eye movement related areas in the frontal lobe has a long history, with microstimulation in monkeys producing the most clear-cut results. For humans, however, there is still no...
9.
Liu L, Ioannides A
PLoS One
. 2010 Mar;
5(3):e9790.
PMID: 20339549
It is now apparent that the visual system reacts to stimuli very fast, with many brain areas activated within 100 ms. It is, however, unclear how much detail is extracted...
10.
Ioannides A, Kostopoulos G, Liu L, Fenwick P
Neuroimage
. 2008 Oct;
44(2):455-68.
PMID: 18950718
All sleep stages contain epochs with high-amplitude electrophysiological phasic events, alternating with quieter "core periods." High-amplitude and core state properties cannot be disentangled with PET and fMRI. Here from high...