Results 251 to 260 of about 221,779 (297)

Cue discriminability predicts instrumental conditioning

Consciousness and Cognition, 2018
Charting mental acts that succeed or fail under unconscious instances of cognition informs debates on the nature and potential functions of consciousness. A prominent method to exclude conscious contributions to cognition is to render visual stimuli unconscious by short and pattern-masked presentations.
Thomas P. Reber, Bita Samimizad, Florian Mormann   +2 more
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Conditional discriminations, symmetry, and semantic priming

Behavioural Processes, 2015
Psychologists interested in the study of symbolic behavior have found that people are faster at reporting that two words are related to one another than they are in reporting that two words are not related - an effect called semantic priming. This phenomenon has largely been documented in the context of natural languages using real words as stimuli ...
Manish, Vaidya, Caleb D, Hudgins, Daniele, Ortu   +2 more
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Curvature discrimination in various finger conditions

Experimental Brain Research, 2006
The ability of humans to discriminate curvature was investigated for different finger conditions. The experiments were conducted in which subjects explored cylindrically curved stimuli by touch. Using a 2-alternative forced-choice procedure, discrimination thresholds and biases were measured for several conditions. In 1-finger conditions, reference and
Horst, B.J. van der, Kappers, A.M.L.
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Forgetting of a drug-conditional discrimination

Physiology & Behavior, 1979
Abstract Rats were trained on a drug-conditional discrimination to escape footshock in a T maze. Over a period of days rats learned to approach one goal box while under a pentobarbital drug state and another while under a saline drug state. Retention of this discrimination was then assessed with the rat under either a pentobarbital or saline state ...
N E, Spear, G J, Smith, A, Sherr, R G, Bryan   +3 more
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Expectancy Mediation of Concurrent Conditional Discriminations

The American Journal of Psychology, 1982
Pigeons learned a pair of two-choice conditional discriminations concurrently. One was red/green identity matching. The other also employed red and green sample stimuli, but the choice alternatives were vertical vs. horizontal lines, with vertical being correct following red samples and horizontal being correct following green. Correct choices produced
G B, Peterson, M A, Trapold
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Impaired conditional discrimination learning in schizophrenia

Schizophrenia Research, 2001
Learning deficits have repeatedly been found in patients with schizophrenia. Eyelid conditional discrimination learning (ECDL) is a test of discriminative aversive conditioning and places minimal demands on motivation. An ECDL task was used to examine residual and paranoid type individuals with schizophrenia and age- and gender-equivalent healthy ...
E, Hofer, D, Doby, P, Anderer, K, Dantendorfer   +3 more
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Orienting response and discrimination conditioning

Physiology & Behavior, 1970
Abstract The effects of habituation or no habituation trials, alternating and random pattern of CS+ and CS− presentations, and constant and variable intertrial intervals were observed on both rate and amount of discrimination conditioning of both first and second interval galvanic skin responses in 96 students.
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Drug discrimination using a Pavlovian conditional discrimination paradigm in pigeons

Pharmacology Biochemistry and Behavior, 1994
Three pigeons were studied using a discriminated autoshaping procedure in which the presence or absence of methadone served as a conditional stimulus signalling which of two key light CSs would be followed by grain access. Drug sessions alternated randomly with no-drug sessions.
B K, Parker, D W, Schaal, M, Miller
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Conditional Linear Discriminant Analysis

18th International Conference on Pattern Recognition (ICPR'06), 2006
Dimensionality reduction by means of linear discriminant analysis (LDA) can generally lead to considerable improvements in classification accuracy and computation time. However, in supervised, pixel-based, image segmentation, the limiting factor of LDA that it cannot extract more than K - 1 features (K the number of classes) often prevents successfully
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Errorless Discrimination, Autoshaping, and Conditioned Inhibition

Science, 1973
Pigeons were exposed to a discriminated autoshaping procedure in which brief presentation of a green light on a key was always followed by food whereas presentation of a vertical white line on the key was never followed by food. Pigeons acquired an errorless discrimination by pecking reliably in the presence of the green light but never in the presence
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