RESUMEN
Aggregations of social organisms exhibit a remarkable range of properties and functionalities. Multiple examples, such as fire ants or slime mold, show how a population of individuals is able to overcome an existential threat by gathering into a solid-like aggregate with emergent functionality. Surprisingly, these aggregates are driven by simple rules, and their mechanisms show great parallelism among species. At the same time, great effort has been made by the scientific community to develop active colloidal materials, such as microbubbles or Janus particles, which exhibit similar behaviors. However, a direct connection between these two realms is still not evident, and it would greatly benefit future studies. In this review, we first discuss the current understanding of living aggregates, point out the mechanisms in their formation and explore the vast range of emergent properties. Second, we review the current knowledge in aggregated colloidal systems, the methods used to achieve the aggregations and their potential functionalities. Based on this knowledge, we finally identify a set of over-arching principles commonly found in biological aggregations, and further suggest potential future directions for the creation of bio-inspired colloid aggregations.
RESUMEN
The aim of this paper is an attempt to show up the possible variations of latencies of the waves of brainstem auditory evoked potentials (SP), in daily practice, without actual otoneurological pathology. The AA. made this study in 62 normal hearing ears from healthy young people with the BSP derived tracings at several intensities of stimulation (60, 75 and 90 db) with the help of two different equipments. They considered the mean and standard latency deviations of I, III and V waves and their intervals and found out that the maximum and minima values were compatible with any otoneurological pathology, that they could't prove afterwards.