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Task instructions modulate the attentional mode affecting the auditory MMN and the semantic N400

Please always quote using this URN: urn:nbn:de:bvb:20-opus-115553
  • Event-related potentials (ERPs) have been proven to be a useful tool to complement clinical assessment and to detect residual cognitive functions in patients with disorders of consciousness. These ERPs are of ten recorded using passive or unspecific instructions. Patient data obtained this way are then compared to data from healthy participants, which are usually recorded using active instructions. The present study investigates the effect of attentive modulations and particularly the effect of activevs. passive instruction on the ERPEvent-related potentials (ERPs) have been proven to be a useful tool to complement clinical assessment and to detect residual cognitive functions in patients with disorders of consciousness. These ERPs are of ten recorded using passive or unspecific instructions. Patient data obtained this way are then compared to data from healthy participants, which are usually recorded using active instructions. The present study investigates the effect of attentive modulations and particularly the effect of activevs. passive instruction on the ERP components mismatch negativity (MMN) and N400. A sample of 18 healthy participants listened to three auditory paradigms: anoddball, aword priming, and a sentence paradigm. Each paradigm was presented three times with different instructions: ignoring auditory stimuli, passive listening, and focused attention on the auditory stimuli. After each task, the participants indicated their subjective effort. The N400 decreased from the focused task to the passive task, and was extinct in the ignore task. The MMN exhibited higher amplitudes in the focused and passive task compared to the ignore task. The data indicate an effect of attention on the supratemporal component of the MMN. Subjective effort was equally high in the passive and focused tasks but reduced in the ignore task. We conclude that passive listening during EEG recording is stressful and attenuates ERPs, which renders the interpretation of the results obtained in such conditions difficult.show moreshow less

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Metadaten
Author: Helena Erlbeck, Andrea Kübler, Boris Kotchoubey, Sandra Veser
URN:urn:nbn:de:bvb:20-opus-115553
Document Type:Journal article
Faculties:Fakultät für Humanwissenschaften (Philos., Psycho., Erziehungs- u. Gesell.-Wissensch.) / Institut für Psychologie
Language:English
Parent Title (English):Frontiers in Human Neuroscience
Year of Completion:2014
Volume:8
Issue:654
Source:Frontiers in Human Neuroscience 8:654. doi:10.3389/fnhum.2014.00654
DOI:https://doi.org/10.3389/fnhum.2014.00654
Pubmed Id:http://www.ncbi.nlm.nih.gov/pubmed?term=25221494
Dewey Decimal Classification:1 Philosophie und Psychologie / 15 Psychologie / 150 Psychologie
Tag:ERP; MMN; N400; attention; brain potentials; component; consciousness; event-related potentials; instruction; mismatch negativity; predicts recovery; priming; selective attention; vegetative state; vigilance decrement
Release Date:2015/07/17
EU-Project number / Contract (GA) number:247919
OpenAIRE:OpenAIRE
Licence (German):License LogoCC BY: Creative-Commons-Lizenz: Namensnennung