The paper presents an updated "Enhanced Perceptual Functioning" (EPF) model for understanding perceptual differences in autism. The original EPF model, proposed by Mottron and Burack (2001), suggested that autistic individuals have superior perceptual functioning in tasks involving local visual and auditory processing, enhanced low-level discrimination, and a more posterior network for complex visual tasks. It also proposed that autistic individuals have enhanced perception of static stimuli, diminished perception of complex movement, and a unique relationship between perception and general intelligence. The model was proposed as an alternative to the Weak Central Coherence model. The revised EPF model incorporates eight principles of autistic perception, including enhanced perceptual functioning, local and global processing, and the relationship between perception and intelligence. The model suggests that enhanced perceptual functioning may explain the special abilities of savant autistics and the variability in presentations within PDD. The overfunctioning of brain regions involved in primary perceptual functions may explain the autistic perceptual endophenotype. The original EPF model was based on savant syndrome, with the example of EC, an autistic savant draftsman, who showed a local bias in processing. The model proposed a "hierarchization deficit" where local features are more numerous than global features, leading to a preference for local processing. However, attempts to generalize these findings to non-savant autistic individuals produced conflicting results. The model was also challenged by findings of enhanced visual discrimination in non-savant autistic individuals, suggesting that primary perceptual analysis may underlie both local biases and accurate reproduction of surface properties. The paper concludes that the EPF model needs to be revisited in light of new evidence and that the mechanisms underlying EPF remain unclear.The paper presents an updated "Enhanced Perceptual Functioning" (EPF) model for understanding perceptual differences in autism. The original EPF model, proposed by Mottron and Burack (2001), suggested that autistic individuals have superior perceptual functioning in tasks involving local visual and auditory processing, enhanced low-level discrimination, and a more posterior network for complex visual tasks. It also proposed that autistic individuals have enhanced perception of static stimuli, diminished perception of complex movement, and a unique relationship between perception and general intelligence. The model was proposed as an alternative to the Weak Central Coherence model. The revised EPF model incorporates eight principles of autistic perception, including enhanced perceptual functioning, local and global processing, and the relationship between perception and intelligence. The model suggests that enhanced perceptual functioning may explain the special abilities of savant autistics and the variability in presentations within PDD. The overfunctioning of brain regions involved in primary perceptual functions may explain the autistic perceptual endophenotype. The original EPF model was based on savant syndrome, with the example of EC, an autistic savant draftsman, who showed a local bias in processing. The model proposed a "hierarchization deficit" where local features are more numerous than global features, leading to a preference for local processing. However, attempts to generalize these findings to non-savant autistic individuals produced conflicting results. The model was also challenged by findings of enhanced visual discrimination in non-savant autistic individuals, suggesting that primary perceptual analysis may underlie both local biases and accurate reproduction of surface properties. The paper concludes that the EPF model needs to be revisited in light of new evidence and that the mechanisms underlying EPF remain unclear.