Lewkowicz (1992a) reported two experiments that used a visual preference method to investigate 4and 8-month-old infants’ detection of two auditory-visual temporal invariants: rate and synchrony. Infants showed no visual preference for an event occurring at the same rate as a concurrent sound; they showed a weak visual preference for an event occurring in synchrony with a concurrent sound. Based...

Speech is a means of communication which is intrinsically bimodal: the audio signal originates from the dynamics of the articulators. This paper reviews recent works in the field of audiovisual speech, and more specifically techniques developed to measure the level of correspondence between audio and visual speech. It overviews the most common audio and visual speech front-end processing, trans...

METHOD: Prospective, non-comparative study of 18 patients (36 eyes) in whom a Synchrony® dual-optic lens was implanted bilaterally following cataract surgery. All patients were studied preoperatively, and 1, 3 and 6 months postoperatively. The following measurements were taken: Uncorrected visual acuity (UCVA) and best corrected visual acuity (BCVA) for distance, intermediate and near vision, a...

A general problem in learning is how the brain determines what lesson to learn (and what lessons not to learn). For example, sound localization is a behavior that is partially learned with the aid of vision. This process requires correctly matching a visual location to that of a sound. This is an intrinsically circular problem when sound location is itself uncertain and the visual scene is rife...

Audio-visual synchrony is important for comfortable speech communication. Previous studies have revealed a temporal window during which human observers perceive physically desynchronized auditory and visual signals as synchronous in both speech and nonspeech signals. This temporal window of audio-visual integration is re-calibrated after adaptation to a constant timing difference between audito...

We tested the binding-by-synchrony hypothesis which proposes that object representations are formed by synchronizing spike activity between neurons that code features of the same object. We studied responses of 32 pairs of neurons recorded with microelectrodes 3 mm apart in the visual cortex of macaques performing a fixation task. Upon mapping the receptive fields of the neurons, a quadrilatera...

To investigate the temporal relationship between synchrony in the discharge of neuron pairs and modulation of the discharge rate, we recorded the neuronal activity of the lateral prefrontal cortex of monkeys performing a behavioral task that required them to plan an immediate goal of action to attain a final goal. Information about the final goal was retrieved via visual instruction signals, wh...

Attentional synchrony is a new theory in the studies of scene perception, proposing that multiple viewers of dynamic scenes attend to the same location of the scene at the same time. The following paper investigated the effects of repetitive viewing of a professionally edited movie scene on the attentional synchrony of viewers. Participants were required to view a scene from the James Bond movi...