User profiles for J. Rapela

Joaquin Rapela

Research Software Engineer, Gatsby Computational Neurosciecne Unit, Sainsbury …
Verified email at ucl.ac.uk
Cited by 181

Internet2-based 3D PET image reconstruction using a PC cluster

…, J Rapela, E Asma, A Chatzioannou, J Qi… - Physics in Medicine …, 2002 - iopscience.iop.org
We describe an approach to fast iterative reconstruction from fully three-dimensional (3D)
PET data using a network of PentiumIII PCs configured as a Beowulf cluster. To facilitate the …

[HTML][HTML] Estimating nonlinear receptive fields from natural images

J Rapela, JM Mendel, NM Grzywacz - Journal of Vision, 2006 - jov.arvojournals.org
… For example, for k 2 , we have the symmetry k 2 ( i 1 , j 1 , i 2 , j 2 ) = k 2 ( i 2 , j 2 , i 1 , j 1 ), …
( i 1 , j 1 ) and plot the value k 2 ( i 1 , j 1 , i 2 , j 2 ) on the vertical axis, with i 2 and j 2 on the X- …

Assisting autistic children with wireless EOG technology

J Rapela, TY Lin, M Westerfield… - … Conference of the …, 2012 - ieeexplore.ieee.org
We propose a novel intervention to train the speed and accuracy of attention orienting and
eye movements in Autism Spectrum Disorder (ASD). Training eye movements and attention …

Brain oscillations in switching vs. focusing audio-visual attention

J Rapela, K Gramann, M Westerfield… - … Conference of the …, 2012 - ieeexplore.ieee.org
… Torki, and J. Townsend. Modalityspecificity of sensory aging in vision and audition: evidence
… Davies, Christopher J. James, Samer A. Abdallah and Mark D Plumbley, Lecture Notes in …

ePPR: a new strategy for the characterization of sensory cells from input/output data

J Rapela, G Felsen, J Touryan, JM Mendel… - … in Neural Systems, 2010 - Taylor & Francis
… For each number of terms, n, the value j along the y-axis, 1 ≤ j ≤ 8, is the correlation
coefficient between the responses from the simulated cell to images in the jth validation subset, …

Automatically combining ranking heuristics for HTML documents

J Rapela - Proceedings of the 3rd international workshop on Web …, 2001 - dl.acm.org
Current search engines use several criteria or heuristics to rank HTML documents. HTML
ranking heuristics need to be combined into a ranking function that given a text query returns a …

[PDF][PDF] Surgical trap of a routine procedure. Scrotal hernia with concomitant sliding of the urinary bladder–case report

B Cybułka, M Podgórny, J Rapeła… - Polish Journal of …, 2015 - bibliotekanauki.pl
The content of the hernial sac may comprise peritoneal cavity elements, such as small and
large bowel loops, visceral adipose tissue, the greater omentum, appendix (amyand hernia), …

The Río de la Plata craton and the assembly of SW Gondwana

CW Rapela, RJ Pankhurst, C Casquet… - Earth-Science …, 2007 - Elsevier
The extent and nature of the Archaean–Palaeoproterozoic craton of Río de la Plata of southern
South America, a major but poorly understood crustal component in Neoproterozoic plate …

Gondwanide continental collision and the origin of Patagonia

RJ Pankhurst, CW Rapela, CM Fanning… - Earth-Science …, 2006 - Elsevier
A review of the post-Cambrian igneous, structural and metamorphic history of Patagonia,
largely revealed by a five-year programme of U–Pb zircon dating (32 samples), geochemical …

Traveling waves appear and disappear in unison with produced speech

J Rapela - arXiv preprint arXiv:1806.09559, 2018 - arxiv.org
… In Rapela (2016) we reported the existence of TWs in a speech processing brain region. In
Rapela (2017) we showed that, at times of CVS transitions, TWs are precisely synchronized, …