Two experiments were conducted to study stimulus equivalence as a function of class size and number of classes. In the first experiment, equivalence was tested in 50 normal adult subjects following a linear series training structure. Subjects were successively assigned to either of 10 groups, exposed...
Using a three-stimulus, two-response task in which two of the stimuli were mapped 1:1 to separate responses (forced-choice) and the third stimulus was mapped to both responses (free-choice), response frequencies and latencies were compared in two experiments. The results indicated that (1) ...
All responses made in the experimental situation belong to mutually exclusive response classes (e.g., correct versus incorrect, CR versus no CR, etc.), and therefore, any increment in the probability of a given response-class implies necessarily a decrement in the probability of all the ...
function the number of nodes than as a function of number of classes. Reaction times, particularly to the comparison stimuli, generally increased initially during tests, possibly indicating precurrent problem solving behavior prior to the response to a comparison stimulus....
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Skinner also recognized the inherent variation in the stimuli that set the occasion for responding, if only because the subject often approached the response manipulandum from different directions. Hence, the controlling stimulus was also defined generically as a class of environmental events that all ...
8). d, Matrix of Pearson’s correlation between the mean population responses to all stimuli on day A and the responses on day B, for days 1 vs 2, days 2 vs 3, and days 1 vs 3 (mean across n = 5 mice). e, Pearson’s correlation between each cell’s time-averaged response to...
However, the studies conducted so far on the state-dependency of inhibitory control were based on response- or stimulus- evoked ERPs and thus could not reveal whether spontaneous, not-time-locked fluctuations of ongoing brain activity preced- ing unpredictable inhibition-stimuli imp...
, miniature movements, fall into three classes: drifts, tremors, andmicrosaccades. Drifts and tremors are mainly involuntary, whereas microsaccades reflect attention and have other features in common with saccades, suggesting that microsaccades and saccades belong to the same functional class....
ArrayQ during 140 h of stimulationThreshold of pyramidal tract response before 140 h of stimulationThreshold of pyramidal tract response after 140 h of stimulation CM15L 2 nC <8 μA, 2 nC <8 μA,2 nC CM6R 4 nC <8 μA, 2 nC >15 μA CM4L 8 nC <8 μA, 2 nC >15 μA Fig...