Results 101 to 110 of about 24,462 (292)

Desflurane Selectively Suppresses Long-latency Cortical Neuronal Response to Flash in the Rat [PDF]

open access: yes, 2009
Background—The effect of inhalational anesthetics on sensory-evoked unit activity in the cerebral cortex has been controversial. Desflurane has desirable properties for in vivo neurophysiologic studies but its effect on cortical neuronal activity and ...
Hudetz, Anthony G.   +2 more
core   +2 more sources

Lithic analysis in African archaeology: Advances and key themes

open access: yesArchaeometry, EarlyView.
Abstract Stone artifacts (lithics) preserve for extended periods; thus they are key evidence for probing the evolution of human technological behaviors. Africa boasts the oldest record of stone artifacts, spanning 3.3 Ma, rare instances of ethnographic stone tool‐making, and stone tool archives from diverse ecological settings, making it an anchor for ...
Deborah I. Olszewski   +2 more
wiley   +1 more source

A Clinical Study of the Distribution and Morphology of Harris Lines

open access: yesArchaeometry, EarlyView.
ABSTRACT Harris lines are commonly used in bioarcheology to infer lifestyle in ancient populations; however, their etiology and identification parameters are still under debate. The aim of this study is to observe the distribution of the lesions in a contemporary clinical sample to address their association with etiological factors, age, biological sex,
Claudia Moro   +7 more
wiley   +1 more source

Object repetition leads to local increases in the temporal coordination of neural responses

open access: yesFrontiers in Human Neuroscience, 2010
Experience with visual objects leads to later improvements in identification speed and accuracy (repetition priming), but generally leads to reductions in neural activity in single-cell recording studies in animals and fMRI studies in humans.
Jessica R Gilbert   +3 more
doaj   +1 more source

Modeling Reverse-Phi Motion-Selective Neurons in Cortex: Double Synaptic-Veto Mechanism [PDF]

open access: yes, 2003
Reverse-phi motion is the illusory reversal of perceived direction of movement when the stimulus contrast is reversed in successive frames. Livingstone, Tsao, and Conway (2000) showed that direction-selective cells in striate cortex of the alert macaque ...
Koch, Christof, Mo, Chun-Hui
core  

Motion clouds: model-based stimulus synthesis of natural-like random textures for the study of motion perception

open access: yes, 2012
Choosing an appropriate set of stimuli is essential to characterize the response of a sensory system to a particular functional dimension, such as the eye movement following the motion of a visual scene.
DeValois RL   +8 more
core   +6 more sources

Shoreline and deglaciation chronology in southeast Norway

open access: yesBoreas, EarlyView.
The postglacial relative sea level history is reconstructed in four areas of mid‐ and inner Oslofjorden in southeast Norway. The reconstructions are based on radiocarbon‐dated raised shoreline levels from 42 sites, mainly isolation basins, and limiting ages from four lakes above the marine limit.
Anders Romundset   +6 more
wiley   +1 more source

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