scholarly journals Longer Fixation Times During Reading Are Correlated With Decreased Connectivity in Cognitive-Control Brain Regions During Rest in Children

2018 ◽  
Vol 12 (1) ◽  
pp. 49-60
Author(s):  
Tzipi Horowitz-Kraus ◽  
Christopher DiCesare ◽  
Adam W. Kiefer
2021 ◽  
Author(s):  
Sung-Joo Lim ◽  
Christiane Thiel ◽  
Bernhard Sehm ◽  
Lorenz Deserno ◽  
Jöran Lepsien ◽  
...  

AbstractThe representations held in working memory are inherently noisy, but attention directed to relevant objects can effectively enhance their fidelity. While recent working memory models suggest that memory representations are distributed across sensory and cognitive-control brain regions, it remains unknown how multiple brain networks generate this attentional gain in fidelity. Here, we investigated the contributions of the distinct brain networks in maintaining and enhancing memory representations using psychophysical modeling and fMRI. Human listeners performed an auditory syllable pitch-discrimination task, in which they received valid (vs. neutral) retro-active cues to selectively attend to one of the two syllable categories maintained in memory. Valid (vs. neutral) retro-cues facilitated task performance, eliciting faster recall and enhanced recall precision of syllables in memory. Valid retro-cues also led to increased neural activation in fronto-parietal and cingulo-opercular networks, but not in sensory-specific superior temporal cortex. Multivariate pattern analysis as a proxy for representational fidelity in memory revealed that attended syllable objects were maintained in distributed areas across superior temporal, frontal, parietal, and sensorimotor brain areas. However, neural fidelity in left superior temporal sulcus and its enhancement through attention-to-memory best predicted the ensuing individual gain in recall precision of auditory objects from memory. These results demonstrate that maintaining versus attentionally enhancing auditory memory representations are functionally separable mechanisms across distributed brain regions.Significance StatementWorking memory is distributed across sensory and cognitive-control brain regions. But how do these brain networks enhance working memory precision when attention is re-directed to memory? We here investigate the contributions of distinct brain networks in maintaining and enhancing auditory memory representations through attention-to-memory using fMRI. We demonstrate that re-directing attention to the relevant auditory memory objects mainly recruits higher-order cognitive-control networks. Among the multiple brain regions retaining memory representations, however, attentional enhancement of the neural fidelity in superior temporal sulcus best predicts the individual gain in recall precision of auditory objects from memory. This study provides evidence of the interplay among the discrete, functionally specialized brain regions in maintaining and attentionally enhancing working memory representations.


2018 ◽  
Vol 240 ◽  
pp. 155-164 ◽  
Author(s):  
Kaja Z. LeWinn ◽  
Irina A. Strigo ◽  
Colm G. Connolly ◽  
Tiffany C. Ho ◽  
Olga Tymofiyeva ◽  
...  

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Florian Bitsch ◽  
Philipp Berger ◽  
Andreas Fink ◽  
Arne Nagels ◽  
Benjamin Straube ◽  
...  

AbstractThe ability to generate humor gives rise to positive emotions and thus facilitate the successful resolution of adversity. Although there is consensus that inhibitory processes might be related to broaden the way of thinking, the neural underpinnings of these mechanisms are largely unknown. Here, we use functional Magnetic Resonance Imaging, a humorous alternative uses task and a stroop task, to investigate the brain mechanisms underlying the emergence of humorous ideas in 24 subjects. Neuroimaging results indicate that greater cognitive control abilities are associated with increased activation in the amygdala, the hippocampus and the superior and medial frontal gyrus during the generation of humorous ideas. Examining the neural mechanisms more closely shows that the hypoactivation of frontal brain regions is associated with an hyperactivation in the amygdala and vice versa. This antagonistic connectivity is concurrently linked with an increased number of humorous ideas and enhanced amygdala responses during the task. Our data therefore suggests that a neural antagonism previously related to the emergence and regulation of negative affective responses, is linked with the generation of emotionally positive ideas and may represent an important neural pathway supporting mental health.


2019 ◽  
Vol 23 (4) ◽  
pp. 740-751 ◽  
Author(s):  
Alexis Hervais-Adelman ◽  
Laura Babcock

Simultaneous interpreting is a complex cognitive task that requires the concurrent execution of multiple processes: listening, comprehension, conversion of a message from one language to another, speech production, and self-monitoring. This requires the deployment of an array of linguistic and cognitive control mechanisms that must coordinate the various brain systems implicated in handling these tasks. How the brain handles this challenge remains an open question, and recent brain imaging investigations have begun to complement the theories based on behavioural data. fMRI studies have shown that simultaneous interpreting engages a network of brain regions encompassing those implicated in speech perception and production, language switching, self-monitoring, and selection. Structural imaging studies have been carried out that also indicate modifications to a similar set of structures. In the present paper, we review the extant data and propose an integrative model of simultaneous interpreting that piggybacks on existing theories of multilingual language control.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Florian Bitsch ◽  
Philipp Berger ◽  
Andreas Fink ◽  
Arne Nagels ◽  
Benjamin Straube ◽  
...  

2017 ◽  
Vol 29 (2) ◽  
pp. 368-381 ◽  
Author(s):  
Jordan E. Pierce ◽  
Jennifer E. McDowell

Cognitive control is engaged to facilitate stimulus–response mappings for novel, complex tasks and supervise performance in unfamiliar, challenging contexts—processes supported by pFC, ACC, and posterior parietal cortex. With repeated task practice, however, the appropriate task set can be selected in a more automatic fashion with less need for top–down cognitive control and weaker activation in these brain regions. One model system for investigating cognitive control is the ocular motor circuitry underlying saccade production, with basic prosaccade trials (look toward a stimulus) and complex antisaccade trials (look to the mirror image location) representing low and high levels of cognitive control, respectively. Previous studies have shown behavioral improvements on saccade tasks after practice with contradictory results regarding the direction of functional MRI BOLD signal change. The current study presented healthy young adults with prosaccade and antisaccade trials in five mixed blocks with varying probability of each trial type (0%, 25%, 50%, 75%, or 100% anti vs. pro) at baseline and posttest MRI sessions. Between the scans, participants practiced either the specific probability blocks used during testing or only a general 100% antisaccade block. Results indicated an overall reduction in BOLD activation within pFC, ACC, and posterior parietal cortex and across saccade circuitry for antisaccade trials. The specific practice group showed additional regions including ACC, insula, and thalamus with an activation decrease after practice, whereas the general practice group showed a little change from baseline in those clusters. These findings demonstrate that cognitive control regions recruited to support novel task behaviors were engaged less after practice, especially with exposure to mixed task contexts rather than a novel task in isolation.


2018 ◽  
Vol 32 (3) ◽  
pp. 283-295 ◽  
Author(s):  
Julio A Yanes ◽  
Michael C Riedel ◽  
Kimberly L Ray ◽  
Anna E Kirkland ◽  
Ryan T Bird ◽  
...  

2006 ◽  
Vol 66 (9) ◽  
pp. 1002-1010 ◽  
Author(s):  
Leslie S. Phillmore ◽  
Jennifer S. Hoshooley ◽  
David F. Sherry ◽  
Scott A. MacDougall-Shackleton

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