Oscillatory mechanisms of process binding in memory

Klimesch, Wolfgang; Freunberger, Roman; Sauseng, Paul

doi:10.1016/j.neubiorev.2009.10.004

Cited by 137 publications

(125 citation statements)

References 87 publications

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“…Given the established interpretation of oscillatory power changes in terms of population (de-)synchronization (Pfurtscheller and Aranibar, 1977), our results join growing evidence for a functional role of neuronal synchrony in short-term memory (for review, see Jensen et al, 2007;Klimesch et al, 2009). Most relevant to the present discussion, a very recent study by Siegel et al (2009) has demonstrated stimulus-dependent synchronization of prefrontal beta oscillations during visual object retention.…”

Section: Discussionsupporting

confidence: 80%

Oscillatory Correlates of Vibrotactile Frequency Processing in Human Working Memory

Spitzer

Wacker²,

Blankenburg³

2010

J. Neurosci.

108

111

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Previous animal research has revealed neuronal activity underlying short-term retention of vibrotactile stimuli, providing evidence for a parametric representation of stimulus frequency in primate tactile working memory (Romo et al., 1999). Here, we investigated the neural correlates of vibrotactile frequency processing in human working memory, using noninvasive electroencephalography (EEG). Participants judged the frequencies of vibrotactile stimuli delivered to the fingertip in a delayed match-to-sample frequency discrimination task. As expected, vibrotactile stimulation elicited pronounced steady-state evoked potentials, which were source-localized in primary somatosensory cortex. Furthermore, parametric analysis of induced EEG responses revealed that the frequency of stimulation was reflected by systematic modulations of synchronized oscillatory activity in nonprimary cortical areas. Stimulus processing was accompanied by frequency-dependent alpha-band responses (8 -12 Hz) over dorsal occipital cortex. The critical new finding was that, throughout the retention interval, the stimulus frequency held in working memory was systematically represented by a modulation in prefrontal beta activity (20 -25 Hz), which was source-localized to the inferior frontal gyrus. This modulation in oscillatory activity during stimulus retention was related to successful frequency discrimination, thus reflecting behaviorally relevant information. Together, the results complement previous findings of parametric working memory correlates in nonhuman primates and suggest that the quantitative representation of vibrotactile frequency in sensory memory entails systematic modulations of synchronized neural activity in human prefrontal cortex.

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Section: Discussionsupporting

confidence: 80%

Oscillatory Correlates of Vibrotactile Frequency Processing in Human Working Memory

Spitzer

Wacker²,

Blankenburg³

2010

J. Neurosci.

108

111

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“…Frontal lobe regions act as an intentional 'pointer' that maintains representations in the parietal-occipital area online and proceeds semantic elaboration. The synchronized activities of the theta band has an important role in the interaction between the anterior and parietal-occipital regions during working memory maintenance and elaboration, suggesting the possibility of entering into long-term memory [6,10]. In the present study, ICA of coherence in the retrieval phase showed a significant difference in the frontal-occipital component that was centered at 1400 ms in the lower theta band when comparing item + context with item ( Figure 8).…”

Section: The Coherent Analysis Of Binding Activities In the Encoding supporting

confidence: 53%

“…This method emphasizes the interaction of brain areas in cognition activities [5]. Klimesch et al [6] reported greater electroencephalograph (EEG) coherence across brain areas during tasks that required information integration such as perception, sensorimotor integration and working memory. EEG coherence reflects the basic neural mechanism of functional connectivity across multiple neural structures for perception, intentional binding, sensory awareness and even subjective self-perception [1].…”

mentioning

confidence: 99%

Effects of encoding and retrieval on the mechanism of item + context binding

2011

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To investigate the neural mechanism of semantic representation and color context binding, we used electroencephalograph time frequency and coherence analyses to reveal local and long-range functional coupling in the encoding and retrieval phases of episodic memory. Fifteen undergraduates participated in the experiment and middle-frequency double-character Chinese words were used as stimuli in two types of study-test tasks (context recall and context recognition tests). Significant differences between item+context and item in the encoding phase were observed at the electrodes in the frontal region at 600-800 ms by time frequency analysis. Further differences were observed at 800 ms by independent component analysis: the frontal component and the coherent component of the triangle phase locking structure among the prefrontal, right parietal and left parietal-occipital regions. In the retrieval phase, differences between item+context and item were found on the electrodes at the central parietal and parietal-occipital regions at 400 ms by time frequency analysis, on the parietal-occipital component at 800 ms by independent component analysis and on the coherence component of the anterior right hemisphere and parietal-occipital regions at 1400 ms. In conclusion, the different effects of encoding and retrieval processing on 'binding' are reflected by the differing extents that brain regions engaged in cognitive operations. In the retrieval phase in particular, activities of the parietal-occipital region were specifically associated with 'binding', and coherence between frontal and temporal-parietal regions is a common brain activity in episodic memory.encoding, retrieval, binding, item, context, frontal and parietal-occipital coherence Citation: Xiao X, Ding J H, Guo C Y. Effects of encoding and retrieval on the mechanism of item+context binding.

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“…Thus, correlations between EEG theta and gamma power and memory performance have been consistently reported (Klimesch 1999;Klimesch et al 1996). It has been proposed that several aspects of theta activity are involved in the sustained attention to and maintenance of information in working memory (increasing power with increasing memory load) as well as in episodic encoding and retrieval (transient increase of theta power as a consequence of event-related synchronization, mainly in parietal sites) (Klimesch 1999;Klimesch et al 2010). Additionally, an increase in the theta oscillations in temporal regions preceding the presentation of a stimulus predicts its successful encoding (Guderian et al 2009).…”

Section: Introductionmentioning

confidence: 95%

Differences in EEG power in young and mature healthy adults during an incidental/spatial learning task are related to age and execution efficiency

López-Loeza

Rangel-Argueta

López-Vázquez

et al. 2016

AGE

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The differential characteristics of absolute power in the EEG theta (4-8 Hz) and gamma (30-45 Hz) frequency bands have been analysed in young (18-25 years old, n = 14) and mature adults (45-65 years old, n = 12) during the incidental or intentional behavioural conditions of learning and recalling in a visuospatial task. A printed drawing of a maze including eight figures of common objects in specific placements, solved by connecting its entrance and exit points, allowed the subject's performance efficiency to be measured based on the number, position accuracy and/or identity of incidentally or intentionally learned and remembered objects. Meanwhile, EEG recordings from frontal, parietal and temporal derivations were obtained to determine the power values of the theta (4-8 Hz) and gamma (30-45 Hz) bands for each behavioural condition and derivation. Relative to the young adults, the mature adults generally showed lower absolute theta power values, mainly due to their low theta powers under the basal and incidental learning conditions, and higher absolute gamma power values in the frontal and temporal regions. Furthermore, higher theta band power in the frontal regions was related to higher performance efficiency in both incidental and intentional learning, regardless of the subjects' age. A significant negative correlation between the parameters of individual incidental or intentional learning performance and age was also found. Indeed, a differential accuracy of remembered information seems to be associated with age and incidental or intentional learning/memory testing conditions. These data support an increasing vulnerability of visuospatial learning abilities at mature ages and as ageing progresses.

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Oscillatory mechanisms of process binding in memory

Cited by 137 publications

References 87 publications

Oscillatory Correlates of Vibrotactile Frequency Processing in Human Working Memory

Oscillatory Correlates of Vibrotactile Frequency Processing in Human Working Memory

Effects of encoding and retrieval on the mechanism of item + context binding

Differences in EEG power in young and mature healthy adults during an incidental/spatial learning task are related to age and execution efficiency

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