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The trade-off between pulse duration and power in optical excitation of midbrain dopamine neurons approximates Bloch's law

Author(s): Pallikaras V; Carter F; Velazquez-Martinez DN; Arvanitogiannis A; Shizgal P;

Optogenetic experiments reveal functional roles of specific neurons. However, functional inferences have been limited by widespread adoption of a restricted set of stimulation parameters. Broader exploration of the parameter space can deepen insight into the mapping between selective neural activity and behavior. In this way, characteristics of the activa ...

Article GUID: 34864162


A comparison of the effect of physical activity and cognitive training on dual-task performance in older adults

Author(s): Vrinceanu T; Blanchette CA; Intzandt B; Lussier M; Pothier K; Vu TTM; Nigam A; Bosquet L; Karelis AD; Li KZH; Berryman N; Bherer L;

Objectives: Studies suggest that cognitive training and physical activity can improve age-related deficits in dual-task performances. However, both of these interventions have never been compared in the same study. This paper investigates the improvement in dual-task performance in two types of e ...

Article GUID: 34865009


White matter correlates of sensorimotor synchronization in persistent developmental stuttering

Author(s): Jossinger S; Sares A; Zislis A; Sury D; Gracco V; Ben-Shachar M;

Introduction: Individuals with persistent developmental stuttering display deficits in aligning motor actions to external cues (i.e., sensorimotor synchronization). Diffusion imaging studies point to stuttering-associated differences in dorsal, not ventral, white matter pathways, and in the cerebellar peduncles. Here, we studied microstructural white matt ...

Article GUID: 34856426


Insights from a dyslexia simulation font: Can we simulate reading struggles of individuals with dyslexia?

Author(s): Stark Z; Franzen L; Johnson AP;

No abstract

Article GUID: 34854169


Caloric restriction causes a distinct reorganization of the lipidome in quiescent and non-quiescent cells of budding yeast

Author(s): Mohammad K; Orfanos E; Titorenko VI;

After budding yeast cells cultured in a nutrient-rich liquid medium with 0.2% glucose (under caloric restriction conditions) or 2% glucose (under non-caloric restriction conditions), ferment glucose to ethanol and then consume ethanol, they enter the stationary phase. The process of their chronological aging begins. At that point, the yeast culture starts ...

Article GUID: 34853658


The Role of Context Conditioning in the Reinstatement of Responding to an Alcohol-Predictive Conditioned Stimulus

Author(s): LeCocq MR; Sun S; Chaudhri N;

Re-exposure to an unconditioned stimulus (US) can reinstate extinguished conditioned responding elicited by a conditioned stimulus (CS). We tested the hypothesis that the reinstatement of responding to an appetitive CS is driven by an excitatory association formed between the US and the context that the US was ingested in during US re-exposure. Male, Long ...

Article GUID: 34852244


Discovery of new vascular disrupting agents based on evolutionarily conserved drug action, pesticide resistance mutations, and humanized yeast

Author(s): Garge RK; Cha HJ; Lee C; Gollihar JD; Kachroo AH; Wallingford JB; Marcotte EM;

Thiabendazole (TBZ) is an FDA-approved benzimidazole widely used for its antifungal and antihelminthic properties. We showed previously that TBZ is also a potent vascular disrupting agent and inhibits angiogenesis at the tissue level by dissociating vascular endothelial cells in newly formed blood vessels. Here, we uncover TBZ's molecular target and m ...

Article GUID: 34849907


The zinc cluster transcription factor Rha1 is a positive filamentation regulator in Candida albicans

Author(s): Omran RP; Ramírez-Zavala B; Aji Tebung W; Yao S; Feng J; Law C; Dumeaux V; Morschhäuser J; Whiteway M;

Zinc cluster transcription factors are essential fungal regulators of gene expression. In the pathogen Candida albicans, the gene orf19.1604 encodes a zinc cluster transcription factor regulating filament development. Hyperactivation of orf19.1604, which we have named RHA1 for Regulator of Hyphal ...

Article GUID: 34849863


Factors Associated with Speech-Recognition Performance in School-Aged Children with Cochlear Implants and Early Auditory-Verbal Intervention

Author(s): Wolfe J; Deroche M; Neumann S; Hanna L; Towler W; Wilson C; Bien AG; Miller S; Schafer EC; Gracco V;

<strong>Background:</strong> Considerable variability exists in the speech recognition abilities achieved by children with cochlear implants (CIs) due to varying demographic and performance variables including language abilities.

<strong>Purpose:</strong> This ar ...

Article GUID: 34847584


Analyses of microstructural variation in the human striatum using non-negative matrix factorization

Author(s): Robert C; Patel R; Blostein N; Steele CC; Mallar Chakravarty M;

The striatum is a major subcortical connection hub that has been heavily implicated in a wide array of motor and cognitive functions. Here, we developed a normative multimodal, data-driven microstructural parcellation of the striatum using non-negative matrix factorization (NMF) based on multiple magnetic resonance imaging-based metrics (mean diffusivity, ...

Article GUID: 34848302


Spectral-Clustering of Lagrangian Trajectory Graphs: Application to Abdominal Aortic Aneurysms

Author(s): Darwish A; Norouzi S; Kadem L;

Purpose: Identification of coherent structures in cardiovascular flows is crucial to describe the transport and mixing of blood. Coherent structures can highlight locations where minimal blood mixing takes place, thus, potential thrombus formation can be expected thither. Graph-based approaches have recently been introduced in order to describe fluid tran ...

Article GUID: 34845627


Comment on the article "Spatially-extended nucleation-aggregation-fragmentation models for the dynamics of prion-like neurodegenerative protein-spreading in the brain and its connectome 486 (2020) 110102"

Author(s): Arsalan Rahimabadi

Considering the reaction schemes (20) and (21) in Fornari et al., 2020, the fragmentation terms Fi (Eq. (22) in Fornari et al., 2020) are not correct. Thus, the fragmentation terms Fi (Eq. (12) in Fornari et al., 2020) are also incorrect when the reaction schemes (10) and (11) in Fornari et al., 2020 are taken into account. Here, the correct equations wil ...

Article GUID: 34843739


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