Perception

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  • Tic-Toc-Trac: New Watch Gadget Measures Time Perception For The Self-Quantifying

    forbes.com 2 hours, 51 minutes ago

    The conundrum of time has plagued physicists and philosophers since man first acknowledged its passing. At times, it creeps; at others, it fleets. But can we quantitatively measure our individual perception of this grim reaper? Two recent Cornell University electrical and computer engineering graduates say yes. For a senior class project, Brian Schiffer and Sima ...

  • Perception And Reality Still At Conflict In Arab World

    jerusalempost.com 18 hours, 18 minutes ago

    Yalla peace: Female beauty in West is considered important factor, while in Islamic world has been considered haram, a sin.

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  • The Doors of Perception — Fotopedia - via Daymix
  • based on human perception: - via Daymix
  • the public's perception of - via Daymix
  • Change in perception - via Daymix
  • Here we have another perception of Rodney's Pillar atop Breidden Hill, - via Daymix
  • The Internet Archive was the - via Daymix
  • Walking slowly through the 'Organ of Corti' alters the perception of sound - via Daymix

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via Wikipedia
Perception is the organization, identification, and interpretation of sensory information in order to fabricate a mental representation through the process of transduction, which sensors in the body transform signals from the environment into encoded neural signals. All perception involves signals in the nervous system, which in turn result from physical stimulation of the sense organs. For example, vision involves light striking the retinas of the eyes, smell is mediated by odor molecules and hearing involves pressure waves. Perception is not the passive receipt of these signals, but can be shaped by learning, memory and expectation. Perception involves these "top-down" effects as well as the "bottom-up" process of processing sensory input. The "bottom-up" processing is basically low-level information that's used to build up higher-level information. The "top-down" processing refers to a person's concept and expectations that influence perception. Perception depends on complex functions of the nervous system, but subjectively seems mostly effortless because this processing happens outside conscious awareness.

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