Results 51 to 60 of about 569,815 (265)

Effects of visual spatial frequency on audiovisual interaction: an event-related potential study

Frontiers in Neuroscience
Spatial frequency is a fundamental characteristic of visual signals that modulates the audiovisual integration behavior, but the neural mechanisms underlying spatial frequency are not well established.
Fengxia Wu, Yanna Ren, Tengfei Hao, Jingjing Yang, Qiong Wu, Jiajia Yang, Meng Wang   +6 more
doaj   +1 more source

Spatial vision of the achromat: spatial frequency and orientation‐specific adaptation. [PDF]

The Journal of Physiology, 1988
1. The psychophysical technique of selective adaptation to stationary sine‐wave gratings of varying spatial frequency and orientation was used to investigate the central processing of spatial information in the visual system of the complete achromat. 2.
Greenlee, Mark W., Magnussen, S., Nordby, K.   +2 more
openaire   +2 more sources

Liver organoids: modelling complexity in homeostasis and disease

FEBS Letters, EarlyView.
Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley   +1 more source

Dynamically Modulating Plasmonic Field by Tuning the Spatial Frequency of Excitation Light

Nanomaterials, 2020
Based on the Fourier transform (FT) of surface plasmon polaritons (SPPs), the relation between the displacement of the plasmonic field and the spatial frequency of the excitation light is theoretically established. The SPPs’ field shifts transversally or
Sen Wang, Minghua Sun, Shanqin Wang, Maixia Fu, Jingwen He, Xing Li   +5 more
doaj   +1 more source

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

FEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri, Ayaka Nagasato‐Ichikawa, Keita Iida, Shuhei Kimura, Akira Imamoto, Mariko Okada   +5 more
wiley   +1 more source

Simultaneous Regularity Contrast and Luminance Polarity

Vision
Texture regularity, for example, the repeating pattern of a carpet, brickwork, or tree bark, is a ubiquitous feature of the visual world. The perception of regularity has generally been studied using multi-element textures whose regularity is manipulated
Frederick A. A. Kingdom, Hua-Chun Sun, Elena Gheorghiu, Martin S. Silva   +3 more
doaj   +1 more source

Função de Sensibilidade ao Contraste: Indicador da Percepção Visual da Forma e da Resolução Espacial Contrast Sensitivity Function: Indicator of the Visual Perception of Form and of the Spatial Resolution

Psicologia: Reflexão e Crítica, 2001
Este trabalho discute a função de sensibilidade ao contraste, FSC, em três seções. A primeira descreve alguns aspectos teóricos e experimentais da FSC relacionados à pesquisa básica e aplicada. A segunda discute alguns estímulos espaciais utilizados para
Natanael Antonio dos Santos, Maria Lúcia de Bustamante Simas   +1 more
doaj   +1 more source

Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding

FEBS Letters, EarlyView.
In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança, Eline L. Jansen, Jorine M. Eeftens   +2 more
wiley   +1 more source

Long term outcomes of bilateral congenital and developmental cataracts operated in Maharashtra, India. Miraj pediatric cataract study III

Indian Journal of Ophthalmology, 2014
Aim : To study long term outcome of bilateral congenital and developmental cataract surgery. Subjects: 258 pediatric cataract operated eyes of 129 children.
Parikshit M Gogate, Mohini Sahasrabudhe, Mitali Shah, Shailbala Patil, Anil N Kulkarni, Rupal Trivedi, Divya Bhasa, Rahin Tamboli, Rekha Mane   +8 more
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source