Energetic and motor responses to increasing force requirements.
J Exp Psychol Anim Behav Process
; 17(2): 174-85, 1991 Apr.
Article
em En
| MEDLINE
| ID: mdl-2045772
ABSTRACT
The effects of increasing work (force) requirements on energy expenditure and response topography were examined in 7 rats pressing a beam to earn food. For the 1st 16 days, the force requirement was 5.52 x 10(-2) N (5.625 g). This increased by 4.91 x 10(-2) N (5 g) every 7th session until Ss had experienced 10 upward shifts. Following the 54.57 x 10(-2) N (55.625 g) condition, the original criterion was reinstated. During the augmented phase. Ss maintained stable reinforcement rates across conditions by increasing the peak force of beam pressing. These higher forces, occurring within 20 reinforcements of changing the force criterion, were produced primarily by increases in the rate of change of force (delta F/delta T). Also, while the rate of work performed on the beam increased, the overall energy expenditure fell. In contrast to these rapid adjustments, reinstating the original 5.52 x 10(-2) N (5.625 g) criterion resulted in only gradual alterations in motor performance.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Comportamento Apetitivo
/
Desempenho Psicomotor
/
Metabolismo Energético
/
Esforço Físico
/
Motivação
Limite:
Animals
Idioma:
En
Revista:
J Exp Psychol Anim Behav Process
Ano de publicação:
1991
Tipo de documento:
Article