Words and pseudowords elicit distinct patterns of 30-Hz EEG responses in humans
Neuroscience LettersPublished 1 July 1994
Werner Lutzenberger, Friedemann Pulvermüller, Niels Birbaumer
Citations164
SJR quartileQ2
SJR score0.77
SNIP0.67
Generate an AI Snapshot to get a quick, structured summary of this paper.
Study Snapshot
ObjectiveStudy objective
MethodsResearch methodology
PopulationPopulation studied
Sample sizeSample sizes
OutcomesStudy outcomes here
ResultsStudy results comes here
LimitationsResearch study limitations comes here
A concise AI-generated summary of the paper will appear here once you click Generate AI Snapshot.
TL;DR
Results indicate that gamma-band responses reflect the different cognitive processes induced by words and pseudowords, and that synchronous activation of large cortical cell assemblies takes place after word presentation but not after presentation of pseudoword.
Abstract
Meaningful words, such as moon, and physically similar but meaningless pseudowords, such as noom, were presented visually in a lexical decision task. The EEG was recorded from 17 scalp electrodes. Significant differences between both stimulus classes were observed in evoked spectral responses of the 'gamma-band' approximately 30 Hz. A hemisphere by wordness interaction demonstrated that 30-Hz spectral power over the left hemisphere was reduced after pseudowords only. These results indicate that gamma-band responses reflect the different cognitive processes induced by words and pseudowords. A possible explanation is the following. Synchronous activation of large cortical cell assemblies takes place after word presentation but not after presentation of pseudowords.
Keywords
PsychologyNeuroscience
CognitionTime-locked multiregional retroactivation: A systems-level proposal for the neural substrates of recall and recognition
1,529 Citations1989António R. Damásio
This proposal rejects a single anatomical site for the integration of memory and motor processes and a single store for the meaning of entities of events and proposes an architecture constituted by neuron ensembles located in multiple and separate regions of primary and first-order sensory association cortices.
Corticonics neural circuits of the cerebral cortex
1,198 Citations1991Moshe Abeles
Electroencephalography and Clinical NeurophysiologyAn on-line transformation of EEG scalp potentials into orthogonal source derivations
1,013 Citations1975Bo Hjorth
A new type of EEG derivation has been investigated, which detects source activity as it appears at the surface level of the scalp, and is realized in the 10-20 system of electrode placement basically as an analogue superposition of four bipolar derivations, forming a star-like configuration around each electrode.
Proceedings of the National Academy of SciencesCoherent 25- to 35-Hz oscillations in the sensorimotor cortex of awake behaving monkeys.
1,013 Citations1992Venkatesh N. Murthy, Eberhard E. Fetz
Synchronous 25- to 35-Hz oscillations were observed in local field potentials and unit activity in sensorimotor cortex of awake rhesus monkeys, suggesting that such oscillations may facilitate interactions between cells during exploratory and manipulative movements, requiring attention to sensorsimotor integration.
Trends in NeurosciencesTemporal coding in the visual cortex: new vistas on integration in the nervous system
761 Citations1992Andreas K. Engel, Peter König +3 more
These results support the hypothesis that temporal correlation of neuronal discharges may serve to bind distributed neuronal activity into unique representations and indicate that neuronal responses with an oscillatory temporal structure may be particularly advantageous as carrier signals for such a temporal coding mechanism.
Language and Cognitive ProcessesAuditory and Visual Semantic Priming in Lexical Decision: A Comparison Using Event-related Brain Potentials
648 Citations1990Phillip J. Holcomb, Helen J. Neville
IEEE Transactions on Biomedical EngineeringScalp Current Density Mapping: Value and Estimation from Potential Data
422 Citations1987François Perrin, Olivier Bertrand +1 more
Scalp current density (SCD) makes possible the identification of scalp sources and sinks of current and its peaks and troughs are sharper than those of the scalp potential (SP).
Electroencephalography and Clinical NeurophysiologyComparison of the magnetoencephalogram and electroencephalogram
274 Citations1979B. Neil Cuffin, David Cohen
The spatial response of the magnetoencephalogram (MEG) to sources in the brain's cortex is compared with that of the electroencephalogyram (EEG) using computer modeling of the head which is approximated by 4 concentric spherical regions that represent the brain and surrounding bone and tissue.
NeuroreportSimultaneous EEG 10 Hz desynchronization and 40 Hz synchronization during finger movements
213 Citations1992Gert Pfurtscheller, Christa Neuper
The EEG was analysed in the 10 Hz band and in four 40 Hz bands by calculation of ERD time courses and ERD maps, whereby a ERD is characterized by a movement-related band power decrease, and a close to C3 localized 10 Hz ERD was found.
Oscillatory Event-Related Brain Dynamics
198 Citations1994Christo Pantev, Thomas Elbert +1 more
Oscillatory and Nonoscillatory Synchronizations in the Visual Cortex of Cat and Monkey and Retinal and Cortical Oscillatory Responses to Patterned and Unpatterned Visual Stimulation in Man.
Die NaturwissenschaftenEntwurf einer neurologischen Theorie der Sprache
157 Citations1992V Braitenberg, Friedemann Pulverm�ller
Recently, theories of neuronal computation in the brain have become detailed enough, so that it becomes possible to speculate about mechanisms underlying the production and perception of language.
Electroencephalography and Clinical NeurophysiologyDetermination of 10–20 system electrode locations using magnetic resonance image scanning with markers
99 Citations1993Terrence D. Lagerlund, Frank W. Sharbrough +5 more
Electroencephalography and Clinical Neurophysiology/Evoked Potentials SectionImproving spatial and temporal resolution in evoked EEG responses using surface Laplacians
75 Citations1993Samuel K. Law, John Rohrbaugh +2 more
Spline generated surface Laplacian temporal wave forms are presented as a method to improve both spatial and temporal resolution of evoked EEG responses by increasing temporal and spatial resolution of component characteristics.
Synchronous Oscillations in Sensorimotor Cortex of Awake Monkeys and Humans
21 Citations1994Venkatesh N. Murthy, Fumi Aoki +1 more
In awake, behaving monkeys, synchronous LFP oscillations were found during performance of trained motor tasks (Sanes and Donoghue, 1993) as well as during less constrained exploratory movements of the arm and hand (Murthy and Fetz, 1992), suggesting that the oscillations may play a role in attention or facilitating interactions during sensorimotor integration.