Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"Two-alternative forced-choice"”.
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Multisensory integration in subclinical neck pain
… present the stimuli. In the second experiment, a two-alternative forced-choice discrimination task was used to test for multisensory differences, specifically whether SCNP individuals have altered response times vs healthy controls, and the consistency of results over time. Response times were …
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Contrast Sensitivity to One- and Two-Dimensional Luminance Patterns
Contrast sensitivities to one- and two-dimensional luminance patterns were compared in a two-alternative forced choice (2AFC) experiment. Space-averaged luminance was also manipulated. Statistical analyses revealed a main effect of stimulus dimension (p < .05) and no effect of space-averaged …
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Audiovisual multisensory integration in young adults with and without a diagnosis of Attention-Deficit/Hyperactivity Disorder
… whether those with ADHD experience altered MSI. Two different paradigms were used to assess MSI in adults with a diagnosis of ADHD. First, a simple response time (RT) task was completed. Electroencephalography (EEG) analysis revealed that those with ADHD had MSI occur, while there were …
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Syllabification and Visual Word Segmentation in Spanish–English Bilinguals
… of Spanish. For Spanish syllabic intuitions a two-alternative forced choice task is used to gain insights about the initial syllables of CV and CVC trisyllabic words. A visual letter sequence monitoring task is utilized to investigate the use of a syllable-based segmentation strategy when …
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Timecourse of a perceptual judgment and factors affecting it
… The time taken to view the stimuli during these choices, termed processing time (PT), is an important quantity because it defines how informed, and thereby accurate, the choice is. Typically, the PT has been estimated from the reaction time (RT), which is the total amount of time taken to report …
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The perception of good and bad natural scene category exemplars
… than bad images. Participants performed a two-alternative forced choice task in which they indicated whether an image was an intact or phase-scrambled scene photograph. In this task, observers were able to “see” good images better than bad scenes, more accurately detecting their brief …
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New opportunities for photon storage and detection: an exploration of a high-efficiency optical quantum memory and the quantum capabilities of the human eye
… technological advancements toward quantum networking and quantum computation. Nevertheless, there is still a great need for creative research that explores possibilities for new capabilities. Particularly, we look towards quantum optics research to develop new ways of manipulating and …
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Acoustic and perceptual analyses of politeness in Japanese speech
… aspects of polite and casual utterances of two question sentences spoken by six male native speakers were acoustically analysed. The analysis showed that fO movement of the final part of utterances and speech rate of utterance were consistently differently used in these different speaking …
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Investigating the Relationship Between Subjective Sleep Quality and Statistical Language Learning
… and statistical language learning in adults. In two separate studies, participants' performances in statistical language learning were measured: Study 1 (N = 97) and its replication in Study 2 (N = 120). Both studies utilised the two-alternative forced choice (2AFC) recognition task, complemented …
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Learning How Humans Play Board Games with GPT-4IAR
… restricted to simplistic experiments such as two-alternative forced choice situations, and has relatively recently broken into more naturalistic settings with the help of computational modeling and games. Importantly, these computational models aim to be interpretable, meaning that they are …
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Investigating the Effects of Perceptual Complexity versus Conceptual Meaning on the Neural Correlates of Visual Working Memory
… (K; number of items correctly remembered in a two-alternative forced choice task). Behavioural performance was significantly greater within-subjects for intact objects relative to scrambled objects and colours, with no difference between colours and scrambled objects. The CDA amplitude was also …
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Testing the limits of human vision with quantum states of light
… a test. In pilot studies, we demonstrate that a two-alternative forced-choice design and our observer viewing station can measure the perception of very weak visual stimuli (including the weakest flashes of light ever directly tested, with just ~3 photons absorbed). We present two proposed …
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Matching novel face and voice identity using static and dynamic facial images
… comparing accuracy across a variety of two-alternative forced-choice (2AFC) procedures to isolate the features that support accuracy. In addition, the thesis provides a clearer and more complete picture of face-voice matching ability than that available in the existing literature. …
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The Neural Processing of Face-like Stimuli
… angry, sad, and neutral-and performed two-alternative forced-choice (2AFC) tasks tailored to each stimulus type. We examined whether emotional expressions could be decoded from EEG patterns within each stimulus category using leave-one-subject-out decoding, both for 4-class …
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How trial correlations and feedback shape sequential decision-making
… trials in which the evidence gathered to make a choice, as well as the resulting actions and feedback, are irrelevant to future decisions. Two-alternative forced choice tasks (2AFC) are often used to characterize strategies subjects use to make decisions. Normative theories, which model ideal …
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A psychophysical investigation of human visual perceptual memory. A study of the retention of colour, spatial frequency and motion visual information by human visual short term memory mechanisms.
… delayed discrimination paradigm that employed a two-alternative forced choice (2-AFC) procedure in conjunction with a method of constant stimuli. The fidelity of VSTM was measured by performance markers such as discrimination thresholds and point of subjective equalities. We have found selective …
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Electrophysiological and behavioural measures of central auditory processing in adult cochlear implant users
… Frequency discrimination was measured using a two-alternative forced choice procedure, to record difference limens (DL) for a 1000Hz tone. Duration of deafness correlated strongly with speech perception scores with poor scores reflecting greater years of deafness. The most sensitive of all the …
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NEURAL CORRELATES OF RANDOM AND INFORMED SACCADIC CHOICES IN THE MACAQUE FRONTAL EYE FIELDS AND CENTRAL THALAMUS
… correlates of perceptual judgment and motor choice were evaluated for visuomotor neurons recorded in the FEF and OcTh. Monkeys performed a compelled-saccade task, a two-alternative forced-choice task that requires rapid perceptual judgments (color discrimination) and which, by design, …
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Causes and predictors of thematic intrusion on human similarity judgments
… Anti-Thematic Intrusion (ATI) task - and tests alternative task instructions as a possible driver of thematic intrusion on similarity. Experiment 2 examines the effect of the isolated components of the ATI task as compared to the classic two-alternative, forced choice similarity judgment task to …
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Variations in Consumer Rejection Thresholds of Water Samples Including Mixed-Berries Flavors
… A total of 103 consumer panelists completed two sessions (unsweetened versus sweetened) of a two-alternative forced choice paired preference test on seven concentrations of total volatiles (0.006, 0.013, 0.026, 0.052, 0.104, 0.208, and 0.416 μg/mL) and one control concentration of total …
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