Dynamics of gamma-band activity in human magnetoencephalogram during auditory pattern working memory

  title={Dynamics of gamma-band activity in human magnetoencephalogram during auditory pattern working memory},
  author={Jochen Kaiser and B. Ripper and Niels Birbaumer and Werner Lutzenberger},
Cortical oscillatory activity during spatial echoic memory
Spatial echoic memory is performed by networks along the putative auditory dorsal stream, without requiring an involvement of prefrontal executive regions, according to the previous short‐term memory study.
Pre-encoding gamma-band activity during auditory working memory
The present study focused on the interval between a visual cue indicating which sound feature was to be memorized and sample sound presentation to test for task-related activation differences preceding stimulus encoding.
Induced Gamma-Band Activity and Human Brain Function
  • J. KaiserW. Lutzenberger
  • Psychology, Biology
    The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry
  • 2003
Gamma-band topographies in magnetoencephalogram are highly comparable with hemodynamic brain imaging studies but yield additional information on the temporal dynamics of activations and connectivity patterns.
Cortical Oscillatory Activity and the Dynamics of Auditory Memory Processing
Investigation of oscillatory signals in magnetoencephalogram (MEG) during different types of auditory processing found that oscillatory activity in MEG may provide unique information about both the activity of local networks and cortico-cortical integration.
Behavioral relevance of gamma‐band activity for short‐term memory‐based auditory decision‐making
The present findings demonstrate the behavioral relevance of GBA and the combined data from two previous studies assessing short‐term memory for sound duration and sound lateralization, respectively found GBA amplitudes to nonmatching vs. matching S1–S2 pairs were higher in good performers than poor performers.
Distinct Gamma-Band Components Reflect the Short-Term Memory Maintenance of Different Sound Lateralization Angles
The findings suggest that the observed GBA components reflect the activity of distinct networks tuned to spatial sound features which contribute to the maintenance of task-relevant information in short-term memory.


Dynamics of Gamma-Band Activity during an Audiospatial Working Memory Task in Humans
Gamma-band activity during the volume task may reflect auditory pattern encoding in auditory ventral stream areas and increased coupling between networks serving representation of audiospatial information and frontal executive systems seems to activate frontal and parietal neuronal ensembles.
Dynamics of gamma-band activity induced by auditory pattern changes in humans.
The results support the hypothesized role of anterior temporal/ventral prefrontal regions in the processing of auditory pattern change and extend earlier findings of gamma-band activity over posterior parieto-temporal cortex during auditory spatial processing that supported the putative auditory dorsal stream.
Working memory of auditory localization.
Results demonstrate that working memory processing of auditory locations involves a distributed network of brain areas and suggest that mnemonic processing of audio- and visuospatial information is directed along a common neural pathway in the posterior parietal and prefrontal cortices.
“What” and “where” in the human auditory system
The converging evidence from two independent measurements of dissociable brain activity during identification and localization of identical stimuli provides strong support for specialized auditory streams in the human brain.
Distinct Pathways Involved in Sound Recognition and Localization: A Human fMRI Study
Evidence from psychophysical studies in normal and brain-damaged subjects suggests that auditory information relevant to recognition and localization are processed by distinct neuronal populations.
Parietal gamma-band activity during auditory spatial precueing of motor responses
A fast activation of parietal networks when auditory spatial precues are used to plan contralateral responses is suggested, which is similar to that shown in previous studies of gamma-band activity.
Human Gamma Band Activity and Perception of a Gestalt
The topography of gamma band spectral power and event-related potentials in human EEG associated with perceptual switching effected by rotating ambiguous (bistable) figures support the notion that formation of a visual percept may involve oscillations in a distributed neuronal assembly.
High-resolution EEG mapping of cortical activation related to working memory: effects of task difficulty, type of processing, and practice.
The results serve to dissociate the effects of task difficulty and practice, to differentiate the involvement of posterior cortex in spatial versus verbal tasks, to localize frontal midline theta to the anteromedial cortex, and to demonstrate the feasibility of using anatomical MRIs to remove the blurring effect of the skull and scalp from the ongoing EEG.
Magnetic oscillatory responses to lateralization changes of natural and artificial sounds in humans
Responses to lateralization changes of both a barking dog sound and a distorted noise were investigated to test whether beta desynchronization would depend on the sound's relevance for orientating and to reflect enhanced coupling of networks involved in the integration of auditory spatial and motor processes.
Oscillations in the alpha band (9-12 Hz) increase with memory load during retention in a short-term memory task.
It is found that the alpha peak systematically increased with the number of items held in working memory and the load dependence and the tight temporal regulation of alpha provide strong evidence that thealpha generating system is directly or indirectly linked to the circuits responsible for working memory.