David H. Hubel

Given the unique combination of topics provided, it seems there might have been a misunderstanding or a mix-up in the request. C70 fullerene and David H. Hubel represent two vastly different areas of study. C70 fullerene pertains to the field of chemistry and nanotechnology, specifically a type of fullerene molecule, which is a form of carbon allotrope. On the other hand, David H. Hubel was a neurophysiologist known for his work on the structure and function of the visual cortex, for which he shared the Nobel Prize in Physiology or Medicine in 1981 with Torsten Wiesel and Roger Sperry.

Given this, I'll create two separate sections within the same article to address both topics adequately, though it's important to note that in a real encyclopedia, these would likely be separate entries.

C70 Fullerene

C70 fullerene, also known as Dodecahedrane, is a molecule composed of 70 carbon atoms. It is a member of the fullerene family, which includes molecules composed entirely of carbon, in the form of a hollow sphere, ellipsoid, or tube. C70 fullerene is characterized by its unique structure, resembling a rugby ball, made up of 25 hexagons and 12 pentagons, with no two pentagons sharing an edge. This structure is a result of the Euler's theorem and is significant in the study of nanotechnology and material science.

C70 fullerene has been the subject of extensive research due to its unique properties, including the ability to act as a semiconductor, its durability, and its potential applications in the field of medicine, particularly in drug delivery systems. Its ability to absorb free radicals makes it a topic of interest in the study of antioxidants and aging.

David H. Hubel

David H. Hubel (1926–2013) was a Canadian-American neurophysiologist renowned for his groundbreaking work on the structure and function of the visual cortex. Alongside his colleague Torsten Wiesel, Hubel discovered that the visual sensory inputs from the eyes are processed in the visual cortex in a highly organized manner. Their work demonstrated that certain neurons in the visual cortex are specifically responsive to edges, angles, and movement, which they described through their concept of simple cells and complex cells.

This discovery was pivotal in understanding how visual information is processed by the brain, leading to significant advancements in the field of neuroscience and visual perception. For their contributions, Hubel and Wiesel were awarded the Nobel Prize in Physiology or Medicine in 1981, sharing it with Roger Sperry, who was recognized for his independent research on the cerebral hemispheres.

Hubel's work has had a profound impact on the development of treatments for visual disorders and has influenced the fields of neurology, psychology, and ophthalmology. His research has also contributed to the understanding of neuroplasticity, the brain's ability to reorganize itself by forming new neural connections throughout life.

Given the constraints of the request, this article provides a basic overview of both C70 fullerene and David H. Hubel, with internal links to related topics and categories for further classification. Each section is designed to reflect the distinct nature of the subjects while providing a concise summary of their significance.