Fronto-parietal networks activation during the contingent negative variation period

Gómez, Carlos M.; Flores, Angélica; Ledesma, Alfredo

doi:10.1016/j.brainresbull.2007.01.015

Cited by 99 publications

(68 citation statements)

References 24 publications

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“…More recently, there has been a concordance of findings on the functional anatomy of the CNV explored with task-based fMRI (e.g., see Gomez et al, 2007;Lutcke et al, 2009;Scheibe et al, 2010)], but rarely (see Nagai et al, 2004) a connection has been sought between anticipatory signals such as the CNV and spontaneously occurring SCPs, which are known to influence information processing (e.g., see Birbaumer et al, 1990;Lakatos et al, 2008;Monto et al, 2008;Vanhatalo et al, 2004).…”

Section: The Restless Brainmentioning

confidence: 99%

The Restless Brain

2011

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The pressing need to better understand human brain organization is appreciated by all who have labored to explain the uniqueness of human behavior in health and disease. Early work on the cytoarchitectonics of the human brain by Brodmann and others accompanied by several centuries of lesion behavior work, although valuable, has left us far short of what we need. Fortunately, modern brain imaging techniques have, over the past 40 years, substantially changed the situation by permitting the safe appraisal of both anatomical and functional relationships within the living human brain. An unexpected feature of this work is the critical importance of ongoing, intrinsic activity, which accounts for the majority of brain's energy consumption and exhibits a surprising level of organization that emerges with dimensions of both space and time. In this essay, some of the unique features of intrinsic activity are reviewed, as it relates to our understanding of brain organization.

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Section: The Restless Brainmentioning

confidence: 99%

The Restless Brain

2011

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“…Modality-specific relay nuclei act as gates that can be opened non-selectively by the brainstem reticular formation and can be closed selectively by the (pre)frontal cortex. Some studies could not find modality-specific distributions of SPN (Böcker et al, 1994, Bastiaansen and, and pointed towards influences of supramodal parietal attention-shifting processes (Gomez et al, 2007). SPN has also been considered an indicator of response timing and attention (Brunia and van Boxtel, 2001).…”

Section: Introductionmentioning

confidence: 97%

Slow cortical potentials in human aversive trace conditioning

Hellwig

Weisbrod

Jochum

et al. 2008

International Journal of Psychophysiology

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“…The CNV is a complex process with two subcomponents described. The initial component reflects orientation to the warning stimulus (early CNV) (Weerts and Lang, 1973), whereas the later component indexes anticipation of the imperative stimulus (Weerts and Lang, 1973), including motor preparation for the response (late CNV) (Loveless and Sanford, 1974), sensory anticipation (Brunia et al, 1999, Gómez et al, 2003 and the activation of the attentionally-related fronto-parietal networks (Gómez et al, 2007, Fan et al, 2007.…”

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confidence: 99%

Development of preparatory activity indexed by the contingent negative variation in children

Flores

Digiacomo

Meneres

et al. 2009

Brain and Cognition

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Objectives: The present study investigated the influence of the cerebral maturity in the process of cue task-specific preparatory activation induced by an spatial cue using a central cue Posner paradigm. For these purposes, the behavioral responses and the Contingent Negative Variation (CNV) generated between the S1 (the warning stimulus) and the S2 (the imperative stimulus) were compared in 16 healthy children (8-13 years old) and 17 healthy young adults (18-23 years old). Methods:The EEG was recorded from 20 scalp sites of the International 10-20 system. The complete trial period included a central directional cue that was on for 300 ms and an attentive waiting period lasting 1360 ms. Finally, a peripheral target subtending a visual angle of 4.56º and situated 2.28º eccentrically in the horizontal meridian appeared. The early and late components of the CNV appearing in the period between the cue and the target were analyzed. Results:The CNV of children did not show contralateral cortical activation related to motor preparation. However, the young adults showed contralateral to the cue activation in motor areas.The children and young adults showed cortical activation in the posterior sensory areas, displaying a contralateral to the cue pattern of activation. In addition to this, a parietal positive component appeared in children during the CNV period. Conclusions:These results might reflect a higher immaturity of the motor preparation system compared with the sensory preparatory system in children. It is possible that children used different strategies than young adults to prepare for stimuli and responses.

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Fronto-parietal networks activation during the contingent negative variation period

Cited by 99 publications

References 24 publications

The Restless Brain

The Restless Brain

Slow cortical potentials in human aversive trace conditioning

Development of preparatory activity indexed by the contingent negative variation in children

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