Perception

Perception (from the Latin perceptio, percipio) is the organization, identification, and interpretation of sensory information in order to represent and understand the environment. All perception involves signals in the nervous system, which in turn result from physical or chemical stimulation of the sense organs. For example, vision involves light striking the retina of the eye, smell is mediated by odor molecules, and hearing involves pressure waves. Perception is not the passive receipt of these signals, but is shaped by learning, memory, expectation, and attention.

Perception can be split into two processes Firstly processing sensory input which transforms these low-level information to higher-level information (e.g., extracts shapes for object recognition). Secondly processing which is connected with person's concept and expectations (knowledge), and selective mechanisms (attention) that influence perception.

Perception depends on complex functions of the nervous system, but subjectively seems mostly effortless because this processing happens outside conscious awareness.

Perceptions (magazine)

Perceptions is an LGBT news magazine which began publication in 1983 in Saskatoon, Saskatchewan, Canada.

History and profile

The periodical, founded by Gens Hellquist, is the longest-running GLBTQ publication in Canada. It provides broad geographical news coverage, but with emphasis on the three Canadian prairie provinces (Saskatchewan, Alberta, and Manitoba). Issues also often carry opinion pieces, book and music reviews, articles on local GLBTQ history, and analytical pieces. Health issues in the GLBTQ community have been an ongoing concern of the publishers. A directory of GLBTQ prairie organizations is printed in each issue.

A detailed index, covering the period 1983 through 2004, is available electronically and in print. The electronic index is freely available to all for searching through the University of Saskatchewan Library's "Saskatchewan Resources for Sexual Diversity" Web site.

Copies of the magazine are held in a number of Canadian libraries, in full or partial runs. See, for example, the holdings of Library and Archives Canada, University of Saskatchewan Library (Saskatoon), University of Toronto's Thomas Fisher Library, and the Canadian Lesbian and Gay Archives (Toronto).

Perceptions (Dizzy Gillespie album)

Perceptions is a composition for trumpet soloist and large jazz orchestra composed and arranged by J. J. Johnson. The piece was commissioned by Dizzy Gillespie and recorded in 1961 for the Verve label. The instrumentation of the orchestra is unusual in that no saxophones or woodwinds are used.

Reception

The Allmusic review states, "Often reminiscent of classical music, Johnson's writing allows plenty of room for Gillespie to improvise. The result is a rather unique set of music that is well worth searching for."

Track listing

All compositions by J. J. Johnson

Personnel