Abstract
Adaptation is widely used as a tool for studying selectivity to visual features. In these studies it is usually assumed that the loci of feature selective neural responses and adaptation coincide. We used an adaptation paradigm to investigate the relationship between response and adaptation selectivity in event-related potentials (ERPs). ERPs were evoked by the presentation of colored Glass patterns in a form discrimination task. Response selectivities to form and, to some extent, color of the patterns were reflected in the C1 and N1 ERP components. Adaptation selectivity to color was reflected in N1 and was followed by a late (300–500 ms after stimulus onset) effect of form adaptation. Thus for form, response and adaptation selectivity were manifested in non-overlapping intervals. These results indicate that adaptation and response selectivity can be associated with different processes. Therefore, inferring selectivity from an adaptation paradigm requires analysis of both adaptation and neural response data.
Highlights
Adaptation is a change in the response properties of neurons, which alters the responses to subsequent stimuli (Kohn, 2007)
We examined response selectivities by comparing the event-related potentials (ERPs) evoked by Glass patterns of different colors and of different forms
We grouped the behavioral data into four conditions: adaptation and test stimuli having the same form and color, same form and different color, different form and same color, and different form and color
Summary
Adaptation is a change in the response properties of neurons, which alters the responses to subsequent stimuli (Kohn, 2007). We examined adaptation selectivities by comparing the ERPs of the test patterns that were preceded by adapting stimuli of the same and different forms (form adaptation), and of the same and different colors (color adaptation) Due to their excellent temporal resolution, ERP recordings are an ideal tool for the examination of the processing stage of a certain experimental effect. The coincidence of response and adaptation selectivities was found for the ERP component N170 which is specific for face perception (Jacques et al, 2007; Kovacs et al, 2007; Vizioli et al, 2010) We test whether this is the case for perception of color and form. We consider other ERP components in the www.frontiersin.org range 50–500 ms after stimulus presentation as possible indices of adaptation and response selectivity
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
