Science news articles about 'visual stimulus'

  • Study suggests human visual system could make powerful computer

    ... program in such a way that when an individual views the representation, the visual system naturally carries out the computation and generates ... be able to glance at a complex visual stimulus (the software program), and our visual system (the hardware) would ...
  • Sound adds speed to visual perception

    ... . Barone and colleagues then measured the latency when the visual stimulus was accompanied by a sound emanating from the same ... . They propose that the auditory cue is processed more quickly than the visual stimulus, and because the monkeys have learned to associate ...
  • Looking vs. seeing

    ... during this tracking behavior, despite the lack of a visual stimulus in the center of gaze. "These neurons highlighted the behavioral importance of the location of the invisible center, because ...
  • Direct recording shows brain signal persists even in dreamless sleep

    ... " tasks might include looking for or studying a visual stimulus, moving an arm or leg, reading a word or listening for a sound. As the subjects perform these tasks ...
  • Scientists adapt economics theory to trace brain's information flow

    ... for the analysis. Researchers gave volunteers a cue that a visual stimulus would be appearing soon in a portion ... cortex, not the reverse. "Once the visual stimulus appears, we expect that the direction of influence between the frontoparietal cortex ...
  • Seeing a brain as it learns to see

    ... sensitive to a particular feature of the visual stimulus: its direction of motion. In visual areas of the mature brain ... to down-to-up or right-to-left and so on. As signals from a visual stimulus enter these brain centers for interpretation ...
  • Brain mechanisms for behavioral flexibility

    ... can execute different actions in response to the same stimulus. The study, published by Cell Press in the April ... discrimination tasks; that is, neural activity depended on the visual stimulus and not the task itself," says Dr. Uka ...
  • New insight into addictive behavior offers treatment hope

    ... processes following the detection of a Pavlovian-type visual stimulus. For example instead of the sight of a pub triggering the addictive behaviour in an alcoholic our research shows ...
  • A glimpse at vision: First impressions count

    ... as 100 milliseconds (thousandths of seconds) after presentation of a visual stimulus -- and monitor activity in very discrete, specific locations. Kreiman collaborated with Children's neurosurgeon ...
  • Dolphins maintain round-the-clock visual vigilance

    ... Allen Goldblatt and Don Carder designed a visual stimulus to test the dolphins' vigilance while they continued listening to the repetitive beeps. Knowing that the dolphins ...
  • Neural noise created during binocular rivalry

    ... research explored what is happening to an ignored stimulus during binocular rivalry, which occurs when the two ... and consciousness. It has been known for years that the neural representation of a visual stimulus temporarily erased from awareness during ...
  • Scientists obtain real time snapshot of the learning process

    ... where they were rewarded for making a correct association between a visual stimulus and an eye movement response. The researchers found that the activity of many of the neurons reflected the delivery (correct response ...
  • Rising above the din

    ... attention to visual details increases the firing rate of neurons tuned for attended stimulus. Until ... video game that required rapt attention to a visual stimulus on the screen. The internal fluctuations or shared ...
  • Brain's response to attention is studied

    LA JOLLA, Calif., Sept. 30 (UPI) -- U.S. scientists say reductions in the firing rates of the brain's background nerve cells occur when monkeys intensely focus on a visual stimulus.
  • Now you see it, now you know you see it

    ... tiny period of time between the registration of a visual stimulus by the unconscious mind and our conscious recognition of it ― between the time ... . Participants were instructed to indicate whether they had seen the stimulus and to report its location on the screen. Some participants were able ...

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