Raymond E. Goldstein

The paper presents a quantitative theory explaining phototaxis sign reversal in Chlamydomonas eyeless mutants due to lensing effects and competing light signals.

The paper examines light refraction and reflection in algal cells, focusing on how localized structures affect light absorption and emission, and establishes duality relationships between these processes.

The paper shows that Chlamydomonas reinhardtii uses an intensity-weighted average of light vectors for phototactic decision-making, with stochastic switching at large angular separations.

The paper quantifies dawn chorus onset in cicadas, showing chorus timing tracks sunrise and reveals a sharp susceptibility peak linked to cooperative decision-making.

The paper investigates the mechanical pumping efficiency of sponge choanocyte chambers by combining imaging and computational models, finding that their spherical shape and outlet angle optimize flow.

The paper studies a microcosm of algae and bacteria, showing that bacterial chemotaxis to oxygen causes algae expulsion from illuminated regions.

The paper uses fluorescent labeling and image analysis to study the stochastic geometry of the extracellular matrix in Volvox carteri during development.

The paper identifies two types of microswimmers, feeders and expellers, with distinct surface interaction behaviors based on their ciliary motion.

The paper examines fluid dynamics in a Petri dish, analyzing flow fields from Stokes flow singularities and their behavior under boundary conditions.

The paper models cellular neighborhood volumes in Volvox using stochastic Voronoi tessellations and shows they follow gamma distributions due to intrinsic biological noise.

The paper uses imaging to analyze nuclear migration in zebrafish retinas and models it as a diffusive process influenced by nuclear concentration gradients.

The paper develops and validates a mathematical model of phototactic steering in Chlamydomonas by linking flagellar photoresponse to cell dynamics and experimental data.