Functional identification of perceptual and response biases in choice reaction time
Human perceptual and response biases in choice reaction time tasks involving visual and auditory stimuli
Hobbie, R. K.↗
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Results for “Stimuli”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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The transmission characteristics of large and small pressure waves in the abdominal vena cava
Mechanical behavior of anesthetized dog abdominal vena cava from pressure wave transmission characteristics, discussing chemical and electrical stimuli
Anliker, M.↗
Retroactive interference in short-term recognition memory for pitch
Retroactive interference stimuli effects on pitch discrimination in short term recognition memory task
Massaro, D. W.↗
'Same'-'different' response times - A model and a preliminary test
Response times in deciding same or different between successive visual stimuli
Nickerson, R. S.↗
Influence of hunger, thirst, and previous experience in the test chamber on stimulus- bound eating and drinking
Hunger, thirst and environmental stimuli roles in development and elicitation of stimulus bound eating and drinking in animals
Cox, V. C.↗
Sensory attention
All-or-none hypothesis of selective sensory attention, discussing simple stimuli, target detectability and switching time
Kristofferson, A. B.↗
Evoked potential, EEG, and slow potential correlates of selective attention
Enhanced evoked potentials sited by auditory stimuli in complex task, considering EEG and neurophysiological basis of selective attention
Naatanen, R.↗
Stimulus generalization of gravity produced by variations in angular velocity and radius
Gravitational stimuli due to variations in angular velocity and radius, noting effects on behavioral control
Love, C. T.↗
Some aspects of locomotion and cargo handling in simulated artificial gravity
Gross locomotion and cargo handling in simulated artificial gravity environments, studying effects of Coriolis forces, angular accelerations, oculo-vestibular stimuli and traction variations
Green, J. A.↗
New reaction tester accurate within 56 microseconds
Testing device measures simple and disjunctive reaction time of human subject to light stimuli. Tester consists of reaction key, logic card, panel mounted neon indicators, and interconnecting wiring. Device is used for determining reaction times of patients undergoing postoperative neurological therapy.
Brown, H.↗
Improved measurement of depth perception
Electromechanical system for Howard-Dolman device was developed. System is used for human depth perception measurements without tactual stimuli.
Fitch, R. C.↗
Tracking variations in the alpha activity in an electroencephalogram
The problem of tracking Alpha voltage variations in an electroencephalogram is discussed. This problem is important in encephalographic studies of sleep and effects of different stimuli on the brain. Very often the Alpha voltage is tracked by passing the EEG signal through a bandpass filter centered at the Alpha frequency, which hopefully will filter out unwanted noise from the Alpha activity. Some alternative digital techniques are suggested and their performance is compared with the standard technique. These digital techniques can be used in an environment where an electroencephalograph is interfaced with a small digital computer via an A/D convertor. They have the advantage that statistical statements about their variability can sometimes be made so that the effect sought can be assessed correctly in the presence of random fluctuations.
Prabhu, K. S.↗
Valve technology: A compilation
A technical compilation on the types, applications and modifications to certain valves is presented. Data cover the following: (1) valves that feature automatic response to stimuli (thermal, electrical, fluid pressure, etc.), (2) modified valves changed by redesign of components to increase initial design effectiveness or give the item versatility beyond its basic design capability, and (3) special purpose valves with limited application as presented, but lending themselves to other uses with minor changes.
Source record↗
Endogenous timing factors in bird migration
Several species of warbler birds were observed in an effort to determine what initiates and terminates migration. Environmental and endogenous timing mechanisms were analyzed. The results indicate that endogenous stimuli are dominant factors for bird migration especially for long distances. It was concluded that environmental factors act as an assist mechanism.
Gwinner, E. G.↗
Orientation through chemo reception in fishes
A system designed to acquire and process data describing locomotor behavior of fish is described. Data are recorded in relation to the fish's response to olfactory stimuli. It was concluded that fish orientation is based on rheataxis or chemotropotaxis.
Kleerekoper, H.↗
Anemomenotatic orientation in beetles and scorpions
Orientation, by beetles and scorpions, according to wind direction and force are analyzed. Major efforts were made to determine: (1) which physical qualities of the air current influence anemomenotaxis, (2) which physiological mechanism is responsible for such orientation, (3) which sense organs do beetles and scorpions use to perceive wind directions, and (4) what the biological significance of anemomenotaxis in the beetle and scorpion is. Experimental results show that the trichobothria in scorpions perceives wind direction; in the beetle it is perceived by sense organs excited by pendicellus-flagellum joint movements. A compensation mechanism is suggested as the basis for anemomenotactic orientation. It was also suggested that the biological significance of anemomenotaxis in scorpions is space orientation; while in beetles it was found to be part of the appetitive behavior used to search for olfactory sign stimuli.
Linsenmair, K. E.↗
Stimulus control in pigeons after extended discriminative training
The effects of amount of training on conditioned inhibition and on the degree of stimulus control were studied using pigeons. The ability of an S- associated with non-reinforcement of suppress positive reinforced behavior was acquired very rapidly during discriminative training. Increased S+, S- training appeared to weaken this conditioned inhibitory effect while at the same time more S+ training apparently increased the amount of external inhibition (non-conditioned inhibition) of positively reinforced behavior by a novel stimulus. Behavioral contrast and incremental generalization gradients along the S- dimension (inhibitory dimensional control) were absent at all stages of training. Behavioral contrast and inhibitory dimensional control are therefore not necessary concomitants of conditioned inhibition by an S-. A new method of assessing the suppressive effects of stimuli during generalization tests was described.
Yarczower, M.↗
Fault tolerant data management system
Described in detail are: (1) results obtained in modifying the onboard data management system software to a multiprocessor fault tolerant system; (2) a functional description of the prototype buffer I/O units; (3) description of modification to the ACADC and stimuli generating unit of the DTS; and (4) summaries and conclusions on techniques implemented in the rack and prototype buffers. Also documented is the work done in investigating techniques of high speed (5 Mbps) digital data transmission in the data bus environment. The application considered is a multiport data bus operating with the following constraints: no preferred stations; random bus access by all stations; all stations equally likely to source or sink data; no limit to the number of stations along the bus; no branching of the bus; and no restriction on station placement along the bus.
Gustin, W. M.↗