Abstracts - faqs.org

Abstracts

Psychology and mental health

Search abstracts:
Abstracts » Psychology and mental health

Lightness constancy in the presence of specular highlights

Article Abstract:

Author Abstract: Visible surfaces in a natural environment often have multiple components of reflectance, including a diffuse component, by which light is scattered isotropically in all possible directions, and a specular component, by which light is reflected anisotropically within a limited range of directions. The research described in the present article was designed to investigate how these different components of reflectance influence the perception of lightness. Human observers were presented with shaded images of smoothly curved surfaces and asked to compare the relative lightness of different surface regions whose diffuse and specular components of luminance were independently manipulated. The results revealed that observers are able to discount the presence of specular highlights so that the relative lightness among different regions is determined almost entirely by the diffuse component of surface reflectance.

Author: Todd, James T., Norman, J. Farley, Mingolla, Ennio
Publisher: Blackwell Publishers Ltd.
Publication Name: Psychological Science
Subject: Psychology and mental health
ISSN: 0956-7976
Year: 2004
Psychological aspects, Diffusion, Diffusion (Physics), Light scattering

User Contributions:

Comment about this article or add new information about this topic:

CAPTCHA


Hunger sensation in patients with compensated and uncompensated type 1 and type 2 diabetes mellitus

Article Abstract:

Type 1 and Type 2 diabetes mellitus patients experience periprandial, interprandial and nocturnal peaks in their hunger sensation. (HS). An amplification of the three peaks corresponding to meal times in compensated type 1 DM patients increases HS. In uncompensated type 1 DM patients, HS increases due to additional orectic peaks in the nocturnal and diurnal parts of the day. Interposed diurnal peaks and an increase in periprandial peaks cause elevated levels of HS in type 2 DM patients.

Author: Cugini, Pietro, Fatati, Giuseppe, Paggi, Anna, Coaccioli, Stefano, Paci, Francesca, Palazzi, Mariangela, Puxeddu, Adolfo
Publisher: John Wiley & Sons, Inc.
Publication Name: The International Journal of Eating Disorders
Subject: Psychology and mental health
ISSN: 0276-3478
Year: 1996
Physiological aspects, Diabetes, Diabetes mellitus, Hunger

User Contributions:

Comment about this article or add new information about this topic:

CAPTCHA


Similar abstracts:
  • Abstracts: The construction of situation models in narrative comprehension: an event-indexing model. Verification of statements about story worlds that deviate from normal conceptions of time: what is true about 'Einstein's Dreams'?
  • Abstracts: Emergency psychiatric assessment of violence. Psychiatric complications in a patient with complex partial seizures
  • Abstracts: Brain neurotransmitter changes in three patients who had a fatal hyperthermia syndrome. Autoantibodies to brain lipids in schizophrenia
  • Abstracts: Eating disorder behaviors of ethnically diverse urban female adolescent athletes and non-athletes. Associated factors for self-reported binge eating among male and female adolescents
  • Abstracts: How local is the impact of a specific learning difficulty on premature children's evaluation of their own competence?
This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.
Some parts © 2025 Advameg, Inc.