Did I See A Panther?

Did WMAP see Moving Local Structures?

The divergence of the momentum density field of the large scale structure generates a secondary anisotropy contribution to the Cosmic Microwave Background (CMB). While the effect is best described as a non-linear extension to the well-known integrated Sachs-Wolfe effect, due to mathematical coincidences, the anisotropy contribution is also described as the lensing of the dipole seen in the rest...

Did I really see that? The complex relationship between the visual stimulus and visual perception.

Laryngeal imaging uses optical and electronic means to visualize the larynx. Understanding some of the issues related to how the human visual system operates and how imaging systems interact with the visual system can help clarify some of the artifacts that arise from these technologies. This article describes how the visual system can construct coherent perceptions from limited information, ho...

Do You See What I See?

Studying visual illusions is critical to understanding typical visual perception. We investigated whether rhesus monkeys (Macaca mulatta) and capuchin monkeys (Cebus apella) perceived the Delboeuf illusion in a similar manner as human adults (Homo sapiens). To test this, in Experiment 1, we presented monkeys and humans with a relative discrimination task that required subjects to choose the lar...

How I See the Yoruba See Themselves

Do You See What I See?

n this issue of the Journal, Hoffmann et al. (1) report on heir comparison of conventional and contrast-enhanced chocardiography, biplane cine angiography, and cardiac agnetic resonance for the detection of regional wall otion abnormalities. Their effort to acquire three or four f these modalities in the same patients creates an opporunity to consider the relative utility of these tests in a gr...