Flexible usage of object and global scene information during human scene categorization

Area of Science:

• Cognitive Psychology
• Visual Perception
• Neuroscience

Background:

• Human scene categorization relies on integrating object-specific details and global scene properties.
• Understanding the temporal dynamics of how these information sources are utilized is crucial for explaining recognition processes.

Purpose of the Study:

• To compare the utility of object versus global scene information for categorization.
• To investigate the time course of how object and global scene information are used.
• To determine factors influencing the preference for object or global information.

Main Methods:

• Three experiments were conducted in 2024, manipulating scene information into single objects or global textures.
• Stimulus-onset asynchrony, object size, and eccentricity were varied to assess information preference.
• Behavioral data were collected to analyze categorization performance and information usage patterns.

Main Results:

• Both object and global scene information demonstrated comparable utility under controlled conditions and could be used concurrently.
• A simple additive model of object and global information was insufficient to account for rapid scene categorization.
• Participant preference for object or global information varied based on stimulus timing, size, and location.
• A sequential local-to-global information processing advantage was observed on average.

Conclusions:

• Both object and global scene information are vital for effective human scene categorization.
• The utilization of visual information over time is flexible, adapting to the availability of object-related cues.
• Findings suggest a dynamic interplay between local object features and global scene context in visual processing.