Vivid imagery is reported faster than weak imagery

Area of Science:

• Cognitive Psychology
• Neuroscience
• Visual Perception

Background:

• Visual imagery and external perception utilize similar neural representations.
• The subjective appraisal processes for percepts and mental images are not fully understood.
• Perceptual detection tasks show slower responses for absence compared to presence.

Purpose of the Study:

• To investigate if reports of low mental image vividness share mechanisms with reports of target absence.
• To explore commonalities in subjective appraisal across perception and imagery.

Main Methods:

• Analysis of five pre-existing datasets examining imagery vividness ratings and reaction times.
• Inclusion of detection tasks and trait imagery questionnaires in select datasets.
• Correlation analysis between vividness ratings, reaction times, and individual differences in detection asymmetry and imagery traits.

Main Results:

• A robust inverse correlation was found between imagery vividness ratings and reaction times: weaker mental images led to longer response times.
• Individual differences in perceptual detection asymmetries and trait imagery predicted the strength of the vividness-response time relationship in some datasets.
• Slower reaction times for reporting low vividness mental images mirror slower responses for perceptual absence detection.

Conclusions:

• The findings suggest a shared underlying mechanism for evaluating the strength of visual experience in both perception and mental imagery.
• This shared mechanism may contribute to the observed relationship between vividness ratings and reaction times.
• Further research is needed to fully elucidate the neural and cognitive mechanisms driving these effects.