Perceptual judgment and psychophysics tasks

A judgment about a sensory stimulus near or below threshold, or a passive presentation designed to isolate a perceptual response; thresholds, accuracy and evoked responses are the measures.

This family contains 5 tasks and cross-lists 3 more.

Auditory Masking

Detect, discriminate, or identify a target sound in the presence of a masking sound; threshold shifts between masked and unmasked conditions index frequency selectivity, temporal resolution, and auditory scene analysis. Engages 4 processesAuditory perceptionMaskingSelective attentionPerceptual decision making. 3 aliasesTone-in-Noise DetectionSpeech-in-NoiseEnergetic Masking, 10 variationsSimultaneous maskingForward maskingBackward maskingEnergetic masking (peripheral)Informational masking (central)Comodulation masking release (CMR)Speech-in-noiseTone-in-noise detectionModulation maskingSpatial release from masking.

Biological Motion Perception

Judgment of human action or identity from sparse point-light displays attached to major joints; indexes recognition of biological motion from kinematic cues alone. Engages 5 processesBiological motion perceptionMotion perceptionSocial perceptionVisual perceptionPattern recognition. 3 aliasesPoint-Light DisplaysPoint-Light Walker TaskPLW, 11 variationsIntact Biological MotionScrambled DisplaysInverted DisplaysReversed (Backward) MotionAction RecognitionDetection in NoiseGender/Identity DiscriminationEmotion from Body MotionPartial/Occluded DisplaysComparison with Mechanical MotionFacing Direction Discrimination.

Face Processing

Blocked or event-related presentation of faces vs. objects (or scrambled faces) to localize face-selective cortical regions (FFA, OFA, pSTS). Engages 3 processesFace perceptionVisual object recognitionVisual perception. 2 aliasesFFA LocalizerFace Localizer, 8 variationsFaces vs. Objects Block DesignFaces vs. Scrambled FacesFaces vs. HousesDynamic Face LocalizerUpright vs. Inverted FacesIdentity AdaptationFace Parts (Eyes, Mouth)Familiar vs. Unfamiliar Faces.

Random Dot Kinematogram

A field of moving dots in which a variable fraction move coherently; direction judgments and RT under varying coherence support drift-diffusion modeling of perceptual decisions. Engages 5 processesPerceptual decision makingMotion perceptionSelective attentionResponse selectionVisual perception. 4 aliasesDot MotionRandom Dot KinematogramRDKDot Motion Task, 4 variationsTwo-Alternative Forced Choice (Standard)Free Response vs. Interrogation ProtocolPulse ParadigmMulti-Alternative Motion Discrimination.

Visual Masking

A brief target is rendered invisible or reduced in visibility by a preceding or following mask; variants include metacontrast, paracontrast, pattern, forward, backward, common-onset, and object-substitution masking. Engages 4 processesMaskingVisual perceptionPerceptual awarenessAttentional awareness. 3 aliasesBackward MaskingMetacontrast MaskingPattern Masking, 10 variationsStandard Metacontrast MaskingPhosphene Detection at ThresholdTMS-Evoked Phosphene DetectionObject Substitution MaskingPattern Masking at ThresholdContinuous Flash Suppression ThresholdRhythmic Entrainment + DetectionMasked Priming VariantBackward Masking with Attentional ManipulationAuditory Backward Masking.

Also filed here

These tasks are filed under another family and cross-listed here; the note says why.

Task	Filed under	Note
Cambridge Face Memory	Recall and recognition memory tests	Learn then recognize faces; could be filed under perceptual judgment as a face-processing measure
Mental Rotation	Spatial cognition and navigation tasks	Rotate objects mentally; could be filed under perceptual judgment
Navon	Conflict and interference tasks	Global-local interference; could be filed under perceptual judgment

Marked for review

A review mark means the assignment is a judgement call the curator has flagged for a second opinion. On the family an entry is filed under it means “not sure this is the right home”; on a cross-listing it means “not sure this belongs here at all”. The note names the alternative or the doubt. Comments go to the issue tracker.

Task	Membership	Note
Cambridge Face Memory	cross-listed	Learn then recognize faces; could be filed under perceptual judgment as a face-processing measure
Mental Rotation	cross-listed	Rotate objects mentally; could be filed under perceptual judgment
Navon	cross-listed	Global-local interference; could be filed under perceptual judgment