Toward noninvasive 3-D imaging of the time course of cortical activity: investigation of the depth of the event-related optical signal

G Gratton, A Sarno, E Maclin, PM Corballis, M Fabiani - Neuroimage, 2000 - Elsevier
… In the present study we investigated whether the depth of the … The fMRI data indicated that
the depth from the head surface … thus the depth) at which the EROS effect was observed. The …

Multichannel optical mapping: Investigation of depth information

I Sase, H Eda, A Seiyama, HC Tanabe… - Optical Tomography …, 2001 - spiedigitallibrary.org
… precisely, and depth information was also acquired by placing each pair of illumination and
detection fibers at various distances. These results indicate that optical method can provide …

[HTML][HTML] Examination of optical depth effects on fluorescence imaging of cardiac propagation

MA Bray, JP Wikswo - Biophysical journal, 2003 - cell.com
… Our results indicate that the depth-dependent optical signal has significant consequences …
to catalog the effects of depth-weighting of the optical signal on epicardial propagation activity, …

Novel functional imaging technique from brain surface with optical coherence tomography enabling visualization of depth resolved functional structure in vivo

RU Maheswari, H Takaoka, H Kadono… - Journal of neuroscience …, 2003 - Elsevier
… In order to investigate the fluctuations in the signal, we divided the data obtained for blank
into two groups consisting of odd scans and even scans. Next we calculated <γ diff (d)> using …

[HTML][HTML] Determination of detection depth of optical probe in pedicle screw measurement device

W Li, Y Liu, Z Qian - Biomedical engineering online, 2014 - Springer
… a warning signal before the … , optical fiber probe to investigate detection depth and identify
tissue types by using NIRs. Figure 5 demonstrates the consistent values of the detection depth

Measurement of signal intensity depth profiles in rat brains with cardiac arrest using wide-field optical coherence tomography

M Sato, MS Hrebesh, I Nishidate - Applied optics, 2009 - opg.optica.org
… To investigate the reproducibility of the variation of the signal intensity ratio with time, we
conducted similar measurements using Rats 2 and 3 (Fig. 17). The measured place in the en …

An investigation of methods for determining depth from focus

J Ens, P Lawrence - IEEE Transactions on pattern analysis and …, 1993 - ieeexplore.ieee.org
… Abstract-The concept of depth from focus involves calculating … on images acquired with a
small depth of field. This technique … lowcost optical systems, the geometric optics model should …

Techniques for extraction of depth-resolved in vivo human retinal intrinsic optical signals with optical coherence tomography

AR Tumlinson, B Hermann, B Hofer, B Považay… - Japanese journal of …, 2009 - Springer
… After normalizations, the signal correlated with the stimulus appears strongest at the … signal
variability. This single trial warrants further investigation of intrinsic optical signals to observe …

In vivo rat brain measurements of changes in signal intensity depth profiles as a function of temperature using wide-field optical coherence tomography

M Sato, D Nomura, T Tsunenari, I Nishidate - Applied optics, 2010 - opg.optica.org
… of optical intrinsic signal (OIS) [7] has been obtained by imaging situations or activities in
brains [8, 9, 10, 11]. OIS images are produced from optical signals, … necessary to investigate the …

Comprehensive investigation of three-dimensional diffuse optical tomography with depth compensation algorithm

H Niu, ZJ Lin, F Tian, S Dhamne… - … of biomedical optics, 2010 - spiedigitallibrary.org
… the depth localization of diffuse optical tomography (DOT) by compensating the exponentially
decreased sensitivity in the deep tissue. In this study, DCA is investigated … in optical signals