Photoresponsive function in biological membranes and artificial systems.

Biological Membranes Architecture and Function

Permeability and Function of Biological Membranes

with the history of cardiac surgery, there may be difficulty in finding the reference to a particular point. Usually, however, the major points are indexed and it is only ones ancillary to cardiac surgery that one must search for. The margins are liberally sprinkled with line drawings of many of the pioneers. The sketches add charm to the presentation, even though they are not always good liken...

Motion Segmentation in Artificial and Biological Systems*

In the early steps of visual information processing motion is one of the most important queues for the development of spatial representations. Obstacle detection and egomotion estimation are only two examples of the powerfulness of visual motion detection systems. The underlying process of information extraction has to be active due to the observer’s capabilities of egomotion. This means that t...

Cooperativity in biological systems

Living organisms can sense and respond to external and internal stimuli. Response isdemonstrated in many forms including modulation of gene expression profiles, motility,secretion, cell death, etc. Nevertheless, all forms share a basic property: they depend on sensingsmall changes in the concentration of an effector molecule or subtle conformational changes ina protein and invoking the appropri...

Embodied spatial cognition: Biological and artificial systems

In this paper we sketch out a computational theory of spatial cognition motivated by navigational behaviours, ecological requirements, and neural mechanisms as identified in animals and man. Spatial cognition is considered in the context of a cognitive agent built around the action-perception cycle. Besides sensors and effectors, the agent comprises multiple memory structures including a workin...