Results 241 to 250 of about 289,431 (286)

Stroboscopic Light Stimulation in Adults Reporting Depressive Symptoms: Safety, Tolerability, Feasibility, and Active-Comparator Development in a Staged Early-Phase Study

open access: yes
Nacker D   +14 more
europepmc   +1 more source

Individual differences in metacontrast masking are enhanced by perceptual learning

open access: yesConsciousness and Cognition, 2010
In vision research metacontrast masking is a widely used technique to reduce the visibility of a stimulus. Typically, studies attempt to reveal general principles that apply to a large majority of participants and tend to omit possible individual differences.
Thorsten Albrecht, Uwe Mattler
exaly   +5 more sources
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Electrophysiological correlates of visual perceptual masking in monkeys

Experimental Brain Research, 1969
Monkeys were trained to discriminate with nearly 100% accuracy between a square and a triangle presented simultaneously in a brief tachistoscopic flash. Perceptual masking was demonstrated by inability to perform this trained visual discrimination at better than chance level when the information flash was followed in less than 20 msec by a blank second
D B Lindsley, D B Lindsley
exaly   +3 more sources

“The mask who wasn’t there”: Visual masking effect with the perceptual absence of the mask.

Journal of Experimental Psychology: Learning, Memory, and Cognition, 2015
Does a visual mask need to be perceptually present to disrupt processing? In the present research, we proposed to explore the link between perceptual and memory mechanisms by demonstrating that a typical sensory phenomenon (visual masking) can be replicated at a memory level.
Rey, Amandine Eve   +4 more
openaire   +4 more sources

Perceptual Masking in Multiple Sound Backgrounds

The Journal of the Acoustical Society of America, 1969
Shifts in masked spondee thresholds during several conditions of listening (monaural, homophasic, antiphasic, and with interaural time disparity) in the presence of one to four competing maskers were measured. The maskers used were white noise, white noise modulated four times per second by 10 dB with a 50% duty cycle, the same noise with 75% duty ...
R, Carhart, T W, Tillman, E S, Greetis
openaire   +2 more sources

Perceptual Learning in Visual Backward Pattern Masking

Perceptual and Motor Skills, 2003
The present study examined the practice effect of backward pattern masking in the context of recent researches on perceptual learning. On the discrimination task, thresholds decreased substantially with practice. In addition, the practice effect was specific to the mask pattern.
Goro, Maehara, Ken, Goryo
openaire   +2 more sources

Perceptual masking of drug stimuli

Drug Development Research, 1989
AbstractThree separate drug‐discrimination experiments, using pigeon subjects, were designed to assess the modification of a morphine (MS) stimulus by d‐amphetamine (AMPH). Experiment 1 examined the drug mixture in a two‐choice discriminative procedure in three groups of subjects trained to one of three doses of MS (1.0, 3.2, or 10 mg/kg) vs.
David V. Gauvin, Alice M. Young
openaire   +1 more source

Perceptual and conceptual masking of pictures.

Journal of Experimental Psychology: Learning, Memory, and Cognition, 1984
We report an experiment in which target pictures, presented for 50 ms, were followed by masks. Two mask variables were implemented: mask luminance and amount of attention demanded by the mask. Luminance but not attention demand affected subsequent picture-memory performance when the mask followed the picture immediately; however, attention demand but ...
G R, Loftus, M, Ginn
openaire   +2 more sources

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