Biomaterial Database

Late visual and auditory ERP components and choice reaction time. 1993

M Falkenstein, and J Hohnsbein, and J Hoormann

Institut für Arbeitsphysiologie Universität Dortmund, Germany.

Some relations between different late positive ERP components and choice reaction time (RT) were studied. In order to identify the different components we used visual and auditory stimuli, as well as simple and choice reaction tasks, since one of the components is thought to be modality dependent and the other one task dependent. In the paradigm the stimulus modalities were mixed, which was expected to lead to a maximum dissociation of the components after auditory stimuli (Hohnsbein et al. (1991). Electroencephalography and Clinical Neurophysiology, 78, 438-446). The results demonstrated the overlap of two positive waves in choice reaction tasks: a central one (P-SR), and a parietal one (P-CR). The latency of the P-SR varied greatly across modalities, but did not vary with RT, whereas the latency of the P-CR varied strongly with RT. The different overlap of these components on fast and slow trials caused amplitude and latency variations of the "P300" and the positive slow wave. Our results suggest a relation of the P-SR with stimulus evaluation (identification), and of the P-CR with response selection (stimulus-response mapping).

UI	MeSH Term	Description	Entries
D008297	Male		Males
D010364	Pattern Recognition, Visual	Mental process to visually perceive a critical number of facts (the pattern), such as characters, shapes, displays, or designs.	Recognition, Visual Pattern,Visual Pattern Recognition
D011930	Reaction Time	The time from the onset of a stimulus until a response is observed.	Response Latency,Response Speed,Response Time,Latency, Response,Reaction Times,Response Latencies,Response Times,Speed, Response,Speeds, Response
D011932	Reading	Acquiring information from text.
D002540	Cerebral Cortex	The thin layer of GRAY MATTER on the surface of the CEREBRAL HEMISPHERES that develops from the TELENCEPHALON and folds into gyri and sulci. It reaches its highest development in humans and is responsible for intellectual faculties and higher mental functions.	Allocortex,Archipallium,Cortex Cerebri,Cortical Plate,Paleocortex,Periallocortex,Allocortices,Archipalliums,Cerebral Cortices,Cortex Cerebrus,Cortex, Cerebral,Cortical Plates,Paleocortices,Periallocortices,Plate, Cortical
D002755	Choice Behavior	The act of making a selection among two or more alternatives, usually after a period of deliberation.	Approach Behavior,Approach Behaviors,Behavior, Approach,Behavior, Choice,Behaviors, Approach,Behaviors, Choice,Choice Behaviors
D005072	Evoked Potentials, Auditory	The electric response evoked in the CEREBRAL CORTEX by ACOUSTIC STIMULATION or stimulation of the AUDITORY PATHWAYS.	Auditory Evoked Potentials,Auditory Evoked Response,Auditory Evoked Potential,Auditory Evoked Responses,Evoked Potential, Auditory,Evoked Response, Auditory,Evoked Responses, Auditory,Potentials, Auditory Evoked
D005074	Evoked Potentials, Visual	The electric response evoked in the cerebral cortex by visual stimulation or stimulation of the visual pathways.	Visual Evoked Response,Evoked Potential, Visual,Evoked Response, Visual,Evoked Responses, Visual,Potential, Visual Evoked,Potentials, Visual Evoked,Response, Visual Evoked,Responses, Visual Evoked,Visual Evoked Potential,Visual Evoked Potentials,Visual Evoked Responses
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man