scholarly journals Resting-state anticorrelations between medial and lateral prefrontal cortex: Association with working memory, aging, and individual differences

Cortex ◽  
2015 ◽  
Vol 64 ◽  
pp. 271-280 ◽  
Author(s):  
Joseph B. Keller ◽  
Trey Hedden ◽  
Todd W. Thompson ◽  
Sheeba A. Anteraper ◽  
John D.E. Gabrieli ◽  
...  
Keyword(s):  
Working Memory ◽  
Prefrontal Cortex ◽  
Individual Differences ◽  
Resting State ◽  
Lateral Prefrontal Cortex

scholarly journals Compressed Timeline of Recent Experience in Monkey Lateral Prefrontal Cortex

2018 ◽  
Vol 30 (7) ◽  
pp. 935-950 ◽  
Author(s):  
Zoran Tiganj ◽  
Jason A. Cromer ◽  
Jefferson E. Roy ◽  
Earl K. Miller ◽  
Marc W. Howard
Keyword(s):  
Working Memory ◽  
Prefrontal Cortex ◽  
Sample Stimulus ◽  
Human Memory ◽  
Recent Experience ◽  
Lateral Prefrontal Cortex ◽  
Elapsed Time ◽  
Cognitive Theories ◽  
Stimulus Identity ◽  
Neural Underpinnings

Cognitive theories suggest that working memory maintains not only the identity of recently presented stimuli but also a sense of the elapsed time since the stimuli were presented. Previous studies of the neural underpinnings of working memory have focused on sustained firing, which can account for maintenance of the stimulus identity, but not for representation of the elapsed time. We analyzed single-unit recordings from the lateral prefrontal cortex of macaque monkeys during performance of a delayed match-to-category task. Each sample stimulus triggered a consistent sequence of neurons, with each neuron in the sequence firing during a circumscribed period. These sequences of neurons encoded both stimulus identity and elapsed time. The encoding of elapsed time became less precise as the sample stimulus receded into the past. These findings suggest that working memory includes a compressed timeline of what happened when, consistent with long-standing cognitive theories of human memory.

Hemispheric specialization of the lateral prefrontal cortex for strategic processing during spatial and shape working memory

NeuroImage ◽  
2004 ◽  
Vol 21 (3) ◽  
pp. 894-903 ◽  
Author(s):  
Dara S Manoach ◽  
Nathan S White ◽  
Kristen A Lindgren ◽  
Stephan Heckers ◽  
Michael J Coleman ◽  
...  
Keyword(s):  
Working Memory ◽  
Prefrontal Cortex ◽  
Hemispheric Specialization ◽  
Strategic Processing ◽  
Lateral Prefrontal Cortex

Sulcal Morphology of the Lateral Prefrontal Cortex Predicts Individual Differences in Cognitive Development

2020 ◽  
Vol 34 (S1) ◽  
pp. 1-1 ◽  
Author(s):  
Willa I. Voorhies ◽  
Jacob A. Miller ◽  
Jewelia Yao ◽  
Ishana Raghuram ◽  
Silvia A. Bunge ◽  
...  
Keyword(s):  
Prefrontal Cortex ◽  
Individual Differences ◽  
Cognitive Development ◽  
Lateral Prefrontal Cortex ◽  
Sulcal Morphology

scholarly journals Neuronal ensembles of primate Lateral Prefrontal Cortex encode spatial working memory in different frames of reference

2020 ◽  
Vol 20 (11) ◽  
pp. 1753
Author(s):  
Rogelio Luna Almeida ◽  
Megan P. Roussy ◽  
Adam Sachs ◽  
Stefan Treue ◽  
Julio C. Martinez-Trujillo
Keyword(s):  
Working Memory ◽  
Prefrontal Cortex ◽  
Spatial Working Memory ◽  
Frames Of Reference ◽  
Lateral Prefrontal Cortex ◽  
Neuronal Ensembles

No Effect of Transcranial Direct Current Stimulation over Left Dorsolateral Prefrontal Cortex on Temporal Attention

2021 ◽  
pp. 1-13
Author(s):  
Raquel E. London ◽  
Heleen A. Slagter
Keyword(s):  
Working Memory ◽  
Prefrontal Cortex ◽  
Individual Differences ◽  
Direct Current ◽  
Transcranial Direct Current Stimulation ◽  
Dorsolateral Prefrontal Cortex ◽  
Cortical Excitability ◽  
Activity Levels ◽  
Direct Current Stimulation ◽  
Dorsolateral Prefrontal

Selection mechanisms that dynamically gate only relevant perceptual information for further processing and sustained representation in working memory are critical for goal-directed behavior. We examined whether this gating process can be modulated by transcranial direct current stimulation (tDCS) over left dorsolateral prefrontal cortex (lDLPFC)—a region known to play a key role in working memory and conscious access. Specifically, we examined the effects of tDCS on the magnitude of the “attentional blink” (AB), a deficit in identifying the second of two targets presented in rapid succession. Thirty-four participants performed an AB task before (baseline), during and after 20 min of 1-mA anodal and cathodal tDCS in two separate sessions. On the basis of previous reports linking individual differences in AB magnitude to individual differences in DLPFC activity and on the basis of suggestions that effects of tDCS depend on baseline brain activity levels, we hypothesized that anodal tDCS over lDLPFC would modulate the magnitude of the AB as a function of individual baseline AB magnitude. Behavioral results did not provide support for this hypothesis. At the group level, we also did not observe any significant effects of tDCS, and a Bayesian analysis revealed strong evidence that tDCS to lDLPFC did not affect AB performance. Together, these findings do not support the idea that there is an optimal level of prefrontal cortical excitability for cognitive function. More generally, they add to a growing body of work that challenges the idea that the effects of tDCS can be predicted from baseline levels of behavior.

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