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Manganese (Mn)-sensing riboswitches protect bacteria from Mn toxicity by upregulating expression of Mn exporters. The Mn aptamers share key features but diverge in other important elements, including within the metal-binding core. Although X-ray crystal structures of isolated aptamers exist, these structural snapshots lack crucial details about how the aptamer communicates the presence or absence of ligand to the expression platform.
View Article and Find Full Text PDFPersistent effects of salience in visual working memory: Limits of cue-driven guidance.
J Exp Psychol Hum Percept Perform
January 2025
Faculte de Psychologie et des Sciences de l'Education, Universite de Geneve.
Visual working memory (VWM) is a core cognitive system enabling us to select and briefly store relevant visual information. We recently observed that more salient items were recalled more precisely from VWM and demonstrated that these effects of salience resisted manipulations of reward, probability, and selection history. Here, we investigated whether and how salience interacts with shifts of attention induced by pre- and retrocueing.
View Article and Find Full Text PDFAperiodic Pupil Fluctuations at Rest Predict Orienting of Visual Attention.
Psychophysiology
January 2025
Department of Psychology, Hangzhou Normal University, Hangzhou, Zhejiang, China.
The aperiodic exponent of the power spectrum of signals in several neuroimaging modalities has been found to be related to the excitation/inhibition balance of the neural system. Leveraging the rich temporal dynamics of resting-state pupil fluctuations, the present study investigated the association between the aperiodic exponent of pupil fluctuations and the neural excitation/inhibition balance in attentional processing. In separate phases, we recorded participants' pupil size during resting state and assessed their attentional orienting using the Posner cueing tasks with different cue validities (i.
View Article and Find Full Text PDFThe importance of color and body size for reproductive decision making by males and females of the giant river prawn, Macrobrachium rosenbergii (de Man, 1879) (Decapoda, Caridea, Palaemonidae).
Behav Processes
January 2025
Laboratory of Sensory Ecology, Department of Physiology & Behavior, Biosciences Center, Federal University of Rio Grande do Norte, Natal-RN, Brazil. Electronic address:
The selection and expression of conspicuous colorations in animals is often related to anti-predation strategies and sociosexual communication. The giant river prawn, Macrobrachium rosenbergii (de Man, 1879) is a species with three male morphotypes that vary in claws' coloration and the size of the animals. It has been suggested that male reproductive quality might be associated to their coloration, but evidence is still conflicting.
View Article and Find Full Text PDFUnravelling situational awareness of multi-tasking pedestrians through average gaze fixation durations: An accelerated failure time modelling approach.
Accid Anal Prev
January 2025
Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India. Electronic address:
Pedestrians use visual cues (i.e., gaze) to communicate with the other road users, and visual attention towards the surrounding environment is essential to be situationally aware and avoid oncoming conflicts.
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