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The recognition potential and conscious awareness

A P Rudell¹, J Hua

¹Department of Physiology, State University of New York, Health Science Center at Brooklyn 11203, USA.

Electroencephalography and Clinical Neurophysiology

|April 1, 1996

Summary

Conscious awareness is necessary for recognition potential (RP). Bilinguals largely missed words they didn't attend to, showing selective attention impacts visual perception and RP evocation.

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Area of Science:

Cognitive Psychology
Neuroscience
Visual Perception

Background:

The recognition potential (RP) is an indicator of image processing.
The role of conscious awareness in evoking RP is not fully understood.

Purpose of the Study:

To investigate if conscious awareness is necessary for evoking recognition potential (RP).
To examine the effect of selective attention on RP.
To determine if RP can differentiate between attended and non-attended stimuli.

Main Methods:

Bilingual subjects selectively attended to superimposed English and Chinese word images.
Subjects reported detection of words in attended vs. non-attended languages.
Recognition potential (RP) latency was measured for both languages.

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Main Results:

Attended word images evoked RP, while non-attended words did not.
Selective attention significantly influenced RP evocation.
RP latency was shorter for Chinese than English words, allowing inference of the attended language.

Conclusions:

Conscious awareness appears necessary for evoking recognition potential (RP).
Selective attention powerfully modulates visual processing and RP.
RP is a sensitive, low-variance indicator of visual perception, valuable for further research.