{"pk":27571,"title":"Attention Modulation Effects on Visual Feature-selectivity of Neurons inBrain-inspired Categorization Models","subtitle":null,"abstract":"Most Brain-inspired Visual Object Recognition Models(BVORMs) do not consider local and global reciprocal con-nections in visual pathway. We addressed this weakness and implemented an attention modulation mechanism based on feed-back connections in BVORMs, where feature-selectivity is shaped and modulated by categorization of objects based on theirvisual features. This modification is inspired by the top-down neuromodulatory signals that make changes in post-synapticactivities of the feature-selective neurons. We also incorporated an implicit memory unit in BVORMs to accumulate recentHebbian synaptic plasticity’s of the neurons in each task. This mechanism guides the top-down feature-based attention modula-tion to retrieve the interrelated feature-selectivity pattern for each task.HMax and CNN models were used as two BVORMs andtested on a visual categorization problem: natural versus artificial objects in CALTECH-256. Based on experimental results,our proposed modifications not only increased their biological-plausibility but also significantly improved their categorizationaccuracies compared to the original models.","language":"eng","license":{"name":"","short_name":"","text":null,"url":""},"keywords":[],"section":"Posters: Member Abstracts","is_remote":true,"remote_url":"https://escholarship.org/uc/item/9vd6671x","frozenauthors":[{"first_name":"Saeed","middle_name":"","last_name":"Masoudnia","name_suffix":"","institution":"University of Tehran","department":""},{"first_name":"Abdol-Hossein","middle_name":"","last_name":"Vahabie","name_suffix":"","institution":"Institute for Research in Fundamental Sciences","department":""},{"first_name":"Majid","middle_name":"Nili","last_name":"Ahmadabadi","name_suffix":"","institution":"University of Tehran","department":""},{"first_name":"Babak","middle_name":"Nadjar","last_name":"Araabi","name_suffix":"","institution":"University of Tehran","department":""}],"date_submitted":null,"date_accepted":null,"date_published":"2017-01-01T18:00:00Z","render_galley":null,"galleys":[{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/27571/galley/17207/download/"}]}