About similar characteristics of visual perceptual learning and LTP

Perceptual learning is an implicit form of learning which induces long-lasting perceptual enhancements. Perceptual learning shows intriguing characteristics. For example, a minimal number of trials per session is needed for learning and the interleaved presentation of more than one stimulus type can hinder learning. Here, we show that these and other characteristics of perceptual learning are very similar to characteristics of long-term potentiation (LTP), the basic mechanism of memory formation. We outline these characteristics and discuss results of electrophysiological experiments which indirectly link LTP and perceptual learning.

► Perceptual learning is an implicit form of learning.
► Recent findings cannot be explained by existing models of perceptual learning.
► Long-term potentiation (LTP) of synaptic transmission has been suggested as the most prominent mechanism in memory formation.
► Here, we show shared characteristics between LTP and perceptual learning.
► We suggest that the mechanisms underlying perceptual learning could be better understood by looking at LTP.