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Primitive intelligence in sensory cortices| old_uid | 1121 |
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| title | Primitive intelligence in sensory cortices |
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| start_date | 2006/04/27 |
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| schedule | 13h-14h |
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| online | no |
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| location_info | FIL seminar room |
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| details | Special EEG seminar |
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| summary | The view about the level of sensory information processing has changed quite dramatically in the past two decades. Sensory processing is no longer regarded as mere feature extraction, but rather as an intelligent function solving difficult computational problems while adapting to the external stimulation as well as to central requirements (such as the current goals of behavior). Event-related potential (ERP) studies have provided important evidence about intelligent sensory processes by disclosing sensory memory systems that implicitly register regular features of the environment and thus enable the detection of new (unpredicted) information. The mismatch negativity (MMN) ERP component is elicited by violating some sensory regularity, whether by stimuli breaking a simple stimulus feature repetition or by deviation from an abstract sensory rule (such as “the higher the pitch the lower the sound intensity”). MMN is elicited both by attended and unattended stimuli. Whereas MMN has been used in the study of the auditory system for over two decades, its visual analogue, termed vMMN has only been established in recent years. The existence of MMN in two modalities provides an excellent opportunity for studying similarities and differences of sensory processing between the two modalities. In particular, the talk will focus on comparing the two modalities in the role of attention in integrating sensory features, temporal integration and the processing of temporal patterns, and object related sensory processing. The similarities found across the two modalities encourage the search for modality independent theories of perception. |
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| responsibles | <not specified> |
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