L. Dunne†, H. L. Gomez, E. da Cunha, S. Charlot, S. Dye, S. Eales, S.J. Maddox K. Rowlands, D.J.B. Smith, R. Auld, M. Baes, D.G. Bonfield, N. Bourne S. Buttiglione, A. Cava, D. L. Clements, K. E. K. Coppin, A. Cooray, A. Dariush G. de Zotti, S. Driver, J. Fritz, J. Geach, R. Hopwood, E. Ibar, R.J. Ivison M.J. Jarvis, L. Kelvin, E. Pascale, M. Pohlen, C. Popescu E.E. Rigby, A. Robotham G. Rodigh...

We investigated the impact of rod-bipolar signal transfer on visual sensitivity. Two observations indicate that rod-rod bipolar signal transfer is nonlinear. First, responses of rods increased linearly with flash strength, while those of rod bipolars increased supralinearly. Second, fluctuations in the responses of rod bipolars were larger than expected from linear summation of the rod inputs. ...

The retina responds to a wide range of light stimuli by adaptation of retinal signaling to background light intensity and the use of two different photoreceptors: rods that sense dim light and cones that sense bright light. Rods signal to rod bipolar cells that receive significant inhibition from amacrine cells in the dark, especially from a rod bipolar cell-activated GABAergic amacrine cell. T...

A Heron quadrilateral is a cyclic quadri­ lateral whose area and side lengths are rational. In this work, we establish a correspondence between Heron quadri­ laterals and a family of elliptic curves of the form y2 = 3 2 x + αx2 − n x. This correspondence generalizes the no­ tions of Goins and Maddox who established a similar connec­ tion between Heron triangles and elliptic curves. We further s...

1 Pepin L. et al. (1995) Heredity 74, 53–61. 2 de Gortari et al. (1997) Anim Genet 28, 274–90. 3 Maddox J. F. (2000) Anim Genet 31, 144–5. 4 Levin I. et al. (1995) Anim Genet 26, 107–10. 5 Liu Z. et al. (1996) Anim Genet 27, 191–3. 6 Pang S. et al. (1999) Anim Genet 30, 195–9. 7 Moran C. (1993) J Hered 84, 274–80. 8 Archibald et al. (1995) Mamm Genome 6, 157–75. 9 Rohrer G. et al. (1994) Geneti...

Because the mouse retina has become an important model system, we have begun to identify its specific neuron types and their synaptic connections. Here, based on electron micrographs of serial sections, we report that the wild-type mouse retina expresses the standard rod pathways known in other mammals: (1) rod --> cone (via gap junctions) to inject rod signals into the cone bipolar circuit; an...

Considerable behavioral evidence has been cited in support of the COVIS dual-system model of category learning (Ashby & Valentin, 2016). The validity of the inferences drawn from these data critically depend on the accurate identification of participants’ categorization strategies. In the COVIS literature, participants’ strategies are identified using a model-based analysis inspired by General ...

We present preliminary results of a neutral hydrogen (HI) redshift survey to find low surface brightness (LSB) galaxies in the very nearby universe. Our sample consists of all galaxies in the APM catalog (Maddox et al. 1990) with a mean surface brightness of μ ≥ 24 mag/arcsec, down to a magnitude limit of bj ≤ 17. With the Parkes 64m radiotelescope 35 objects were detected at v < 4300 km s. The...