BACKGROUND To evaluate the peripapillary choroidal thickness of a healthy Chinese population, and to determine its influencing factors. METHODS A total of 76 healthy volunteers (76 eyes) without ophthalmic or systemic symptoms were enrolled. Choroidal scans (360-degree 3.4 mm diameter peripapillary circle scans) were obtained for all eyes using enhanced depth imaging spectral-domain optical c...

Studies have been made ofmucus glycoprotein biosynthesis in different regions of the lower gastrointestinal tract in normal patients and those with ulcerative colitis (UC), active or inactive, by means of 'H-glucosamine ('HGlcNH2) 35S-sulphate double labelling of epithelial biopsy specimens under culture conditions. The time based rate of 'H-GlcNH, labelling ofmucus in rectal tissue was similar...

We review the electrophysiological studies concerning the effects of caffeine on muscle, lower and upper motor neuron excitability and cognition. Several different methods have been used, such as electromyography, recruitment analysis, H-reflex, transcranial magnetic stimulation (TMS), electroencephalography and event-related potentials. The positive effect of caffeine on vigilance, attention, ...

PURPOSE To study posterior choroidal thickness and its profile based on location in a healthy Chinese population and to determine its correlation with age and refractive error. METHODS A total of 210 healthy volunteers (420 eyes) with no ophthalmic disease history were recruited. Choroidal scans were obtained for all eyes using enhanced depth imaging spectral-domain optical coherence tomograp...

Purpose. To study posterior choroidal thickness and its profile based on location in healthy Japanese subjects and the correlation with axial length, refractive error (RE), and age. Methods. Eighty-six eyes of 43 healthy volunteers with no ophthalmic or systemic symptoms were examined with prototype high-penetration optical coherence tomography using a 1060-nm light source. Eyes with high myopi...

Functional MRI (fMRI) can be applied to study the functional connectivity of the human brain. It has been suggested that fluctuations in the blood oxygenation level-dependent (BOLD) signal during rest reflect the neuronal baseline activity of the brain, representing the state of the human brain in the absence of goal-directed neuronal action and external input, and that these slow fluctuations ...

Monodisperse aerosol particles can be used to non-invasively probe intrapulmonary airspace dimensions. In this study, the aerosol-derived airway morphometry technique was used to study airspace dimensions in 79 healthy subjects, in order to assess reference data for the future clinical application of aerosol-derived airway morphometry, and to investigate the effect of lung inflation, anthropome...

Purpose. To determine the corneal biomechanical properties by using the Ocular Response Analyzer™ and to investigate potential factors associated with the corneal biomechanics in healthy myopic subjects. Methods. 135 eyes from 135 healthy myopic subjects were included in this cross-sectional observational study. Cornea hysteresis (CH), corneal resistance factor (CRF), cornea-compensated intraoc...

Serum ferritin levels were estimated in 78 normal subjects (46 males and 37 females) using radioimmunoassay techniques. The mean serum ferritin level in normal men was 83 ng/ml (range 7.4 190.0 ng/ml), compared with 43 ng/ml (range 5.1 — 104 ng/mI) in normal women. The difference in the mean ferritin level between the two sexes was significant. A concentration below 10 ng/mI was associated with...

Aerosol bolus dispersion is a physiological test of lungs, which uses monodisperse submicron particles to measure intrapulmonary convective gas mixing. In this study, aerosol bolus dispersion was measured in healthy subjects in order to assess reference values for possible clinical applications, to assess the reproducibility of these values, and to identify physical and physiological factors in...