Conventional univariate fMRI analysis typically examines each voxel in isolation despite the fact that voxel interactions may be another indication of brain activation. Here, we propose using a graph-theoretical algorithm called “Random Walker” (RW), to estimate probabilistic activation maps that encompass both activation effects and functional connectivity. The RW algorithm has the distinct ad...

ABSTRACf Let us consider the linear model Y = XO + E in the usual matrix notation, where the errors are independent and identically distributed. Our main objective is to develop robust Wald-type tests for a large class of hypotheses on OJ by 'robust' we mean robustness in terms of size and power against long tailed error distributions. First, assume that the error distribution is symmetric abou...

IMPORTANCE Detection of treatment-requiring retinopathy of prematurity (ROP) involves serial eye examinations. An ROP prediction model using predictive factors could identify high-risk infants and reduce required eye examinations. OBJECTIVE To determine predictive factors for the development of referral-warranted (RW) ROP. DESIGN, SETTING, AND PARTICIPANTS This multicenter observational coh...

PURPOSE To investigate the roles of interaction between OX40 and OX40 ligand (OX40L) in the development of experimental allergic conjunctivitis (EC) in mice. METHODS BALB/c mice actively immunized with short ragweed pollen (RW) were intraperitoneally injected on days 0, 2, 4, 6, and 8 with agonistic anti-OX40 Ab, blocking anti-OX40L Ab, or normal rat (nr)IgG. On day 10, the mice were challeng...

We use time-resolved spectra of the cataclysmic variable RW Tri in the I and Kband to determine the orbital velocity of the secondary star using skew mapping and cross correlation techniques respectively. We find radial velocity amplitudes of 250±47 km/s in the I-band, and 221±29 km/s in the K-band. We also determine the rotational velocity of the secondary star using the K-band data and find a...

This essay looks at the historical significance of two APS classic papers that are freely available online: Sperry RW. Optic nerve regeneration with return of vision in anurans. J Neurophysiol 7: 57–69, 1944 (http://jn.physiology.org/cgi/reprint/7/1/57). Sperry RW. Restoration of vision after crossing of optic nerves and after contralateral transplantation of eye. J Neurophysiol 8: 15–28, 1945 ...

This essay looks at the historical significance of two APS classic papers that are freely available online: Sperry RW. Optic nerve regeneration with return of vision in anurans. J Neurophysiol 7: 57-69, 1944 (http://jn.physiology.org/cgi/reprint/7/1/57). Sperry RW. Restoration of vision after crossing of optic nerves and after contralateral transplantation of eye. J Neurophysiol 8: 15-28, 1945 ...

3 McCallum RW, Kline MM, Curry N, Sturdevant RAL. Comparative efforts of metoclopramide and bethanechol on lower esophageal sphincter pressure in reflux patients. Gastroenterology 1975;68:1 114-8. McCallum RW, Berkowitz DM. The frequency of delayed gastric emptying in patients with gastroesophageal reflux and its response to metoclopramide and bethanechol. Gastroenterology 1978 ;74:1135. Gugler...