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Related Concept Videos

Factors Affecting Perception01:25

Factors Affecting Perception

Perception is influenced by perceptual set, context, motivation, and emotion. Perceptual set, or perceptual expectancy, refers to the tendency to perceive things in a particular way, influenced by previous experiences and expectations. This phenomenon affects the interpretation of stimuli, creating a set of mental tendencies and assumptions that impact sensory perceptions of sound, taste, touch, and sight.
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Decision Making

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A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss
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Adaptive criterion setting in perceptual decision making.

Maik C Stüttgen1, Ali Yildiz, Onur Güntürkün

  • 1Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, GAFO 05/620, University of Bochum, Bochum, Germany. maik.stuettgen@rub.de

Journal of the Experimental Analysis of Behavior
|September 13, 2011
PubMed
Summary
This summary is machine-generated.

Pigeons demonstrated rapid, biphasic adjustments to changing reinforcement rules in a perceptual task. Initial overshooting was followed by near-optimal response allocation, challenging expected value maximization models.

Keywords:
expected valuegeneralized matching lawkey peckoptimal choicepigeonpsychophysicssignal detection theoryyes-no task

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Area of Science:

  • Animal Cognition
  • Behavioral Neuroscience
  • Perceptual Psychology

Background:

  • Understanding decision-making processes in animals is crucial for cognitive science.
  • Pigeons (Columba livia) are widely used models for studying perception and learning.
  • Previous research explored reinforcement learning but often assumed rational choice strategies.

Purpose of the Study:

  • To investigate pigeon's adjustment process to altered reinforcement contingencies in a perceptual categorization task.
  • To model the behavioral changes using signal detection theory and alternative frameworks.
  • To determine if pigeons employ strategies maximizing expected value.

Main Methods:

  • Pigeons performed a perceptual categorization task using six shades of gray stimuli.
  • Reinforcement probabilities for correct responses were systematically varied.
  • Behavioral data were analyzed using a signal detection model and a reinforcement probability-based model.

Main Results:

  • Pigeons exhibited a biphasic adjustment: initial bias towards the favored option, followed by a return to unbiased allocation.
  • A signal detection model with a shifting criterion effectively described the data.
  • Pigeons showed near-optimal response distribution post-adjustment, despite minimal overall benefit.

Conclusions:

  • Pigeon's rapid adjustments to reinforcement changes suggest a mechanism beyond simple expected value maximization.
  • A model where reinforcement probabilities directly influence choice allocation better explains the observed swift behavioral shifts.
  • Minute changes in reinforcement probability exert a strong influence on pigeon's choice behavior.