caa a22 4500 445353678 CHVBK 20180317142852.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1007/s00221-011-2734-8 doi (NATIONALLICENCE)springer-10.1007/s00221-011-2734-8 An electrophysiological study of task demands on concreteness effects: evidence for dual coding theory [Elektronische Daten] [Suzanne Welcome, Allan Paivio, Ken McRae, Marc Joanisse] We examined ERP responses during the generation of word associates or mental images in response to concrete and abstract concepts. Of interest were the predictions of dual coding theory (DCT), which proposes that processing lexical concepts depends on functionally independent but interconnected verbal and nonverbal systems. ERP responses were time-locked to either stimulus onset or response to compensate for potential latency differences across conditions. During word associate generation, but not mental imagery, concrete items elicited a greater N400 than abstract items. A concreteness effect emerged at a later time point during the mental imagery task. Data were also analyzed using time-frequency analysis that investigated synchronization of neuronal populations over time during processing. Concrete words elicited an enhanced late going desynchronization of theta-band power (723-938ms post stimulus onset) during associate generation. During mental imagery, abstract items elicited greater delta-band power from 800 to 1,000ms following stimulus onset, theta-band power from 350 to 205ms before response, and alpha-band power from 900 to 800ms before response. Overall, the findings support DCT in suggesting that lexical concepts are not amodal and that concreteness effects are modulated by tasks that focus participants on verbal versus nonverbal, imagery-based knowledge. Springer-Verlag, 2011 Imagery nationallicence N400 nationallicence Semantic processing nationallicence Time-frequency analysis nationallicence Theta band nationallicence Alpha band nationallicence Delta band nationallicence Welcome Suzanne Centre for Brain and Mind, Department of Psychology, The University of Western Ontario, The Natural Sciences Centre, Room 206, N6A 5B7, London, ON, Canada aut Paivio Allan Department of Psychology, The University of Western Ontario, Room 7418 Social Science Centre, N6A 5C2, London, ON, Canada aut McRae Ken Department of Psychology, The University of Western Ontario, Room 7418 Social Science Centre, N6A 5C2, London, ON, Canada aut Joanisse Marc Centre for Brain and Mind, Department of Psychology, The University of Western Ontario, The Natural Sciences Centre, Room 206, N6A 5B7, London, ON, Canada aut Experimental Brain Research Springer-Verlag 212/3(2011-07-01), 347-358 0014-4819 212:3<347 2011 212 221 https://doi.org/10.1007/s00221-011-2734-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00221-011-2734-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Welcome Suzanne Centre for Brain and Mind, Department of Psychology, The University of Western Ontario, The Natural Sciences Centre, Room 206, N6A 5B7, London, ON, Canada aut NATIONALLICENCE 700 1- Paivio Allan Department of Psychology, The University of Western Ontario, Room 7418 Social Science Centre, N6A 5C2, London, ON, Canada aut NATIONALLICENCE 700 1- McRae Ken Department of Psychology, The University of Western Ontario, Room 7418 Social Science Centre, N6A 5C2, London, ON, Canada aut NATIONALLICENCE 700 1- Joanisse Marc Centre for Brain and Mind, Department of Psychology, The University of Western Ontario, The Natural Sciences Centre, Room 206, N6A 5B7, London, ON, Canada aut NATIONALLICENCE 773 0- Experimental Brain Research Springer-Verlag 212/3(2011-07-01), 347-358 0014-4819 212:3<347 2011 212 221 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer