TY - JOUR
T1 - Mutual Information of Image Fragments Predicts Categorization in Humans: Electrophysiological and Behavioral Evidence
AU - Harel, Assaf
AU - Ullman, Shimon
AU - Epshtein, Boris
AU - Bentin, Shlomo
PY - 2007/7/1
Y1 - 2007/7/1
N2 - Computational models suggest that features of intermediate complexity (IC) play a central role in object categorization [Ullman, S., Vidal-Naquet, M., & Sali, E. (2002). Visual features of intermediate complexity and their use in classification. Nature Neuroscience, 5 , 682–687.]. The critical aspect of these features is the amount of mutual information (MI) they deliver. We examined the relation between MI, human categorization and an electrophysiological response to IC features. Categorization performance correlated with MI level as well as with the amplitude of a posterior temporal potential, peaking around 270 ms. Hence, an objective MI measure predicts human object categorization performance and its underlying neural activity. These results demonstrate that informative IC features serve as categorization features in human vision.
AB - Computational models suggest that features of intermediate complexity (IC) play a central role in object categorization [Ullman, S., Vidal-Naquet, M., & Sali, E. (2002). Visual features of intermediate complexity and their use in classification. Nature Neuroscience, 5 , 682–687.]. The critical aspect of these features is the amount of mutual information (MI) they deliver. We examined the relation between MI, human categorization and an electrophysiological response to IC features. Categorization performance correlated with MI level as well as with the amplitude of a posterior temporal potential, peaking around 270 ms. Hence, an objective MI measure predicts human object categorization performance and its underlying neural activity. These results demonstrate that informative IC features serve as categorization features in human vision.
KW - Categorization
KW - Event-related Potentials (ERPs)
KW - Features
KW - Human Performance
KW - Object Recognition
UR - https://corescholar.libraries.wright.edu/psychology/249
UR - http://www.sciencedirect.com/science/article/pii/S0042698907001551
U2 - 10.1016/j.visres.2007.04.004
DO - 10.1016/j.visres.2007.04.004
M3 - Article
VL - 47
JO - Vision Research
JF - Vision Research
ER -