Enhancement of selective listening by illusory mislocation of speech sounds due to lip-reading

Article Abstract:

Cross-modal matching, which produces an illusion of the mislocation of sounds at their visual source, improves somewhat selective spatial attention during speech processing. Speech perception includes both sounds and lip-reading even in individuals with good hearing. The matching takes place before auditory spatial selection is over and ventriloquism improves auditory spatial selection. Visual images that do not match the target sounds decrease performance, but compensate for this by relating the undesired sounds to the lip movements and isolating the desired sounds.

Auditory perception, Speech perception

---

Preserved figure-ground segregation and symmetry perception in visual neglect

Article Abstract:

The theory that figures are perceivable as separate from their backgrounds before conscious attention has been focused on them received strong support from tests of a 69-year-old, brain-damaged stroke patient. The patient, identified as C.C., disregards objects on the left while still being able to distinguish figures from their backgrounds. This bears out the preattentive segregation model over the alternative idea that visual attention begins by perceiving figures and backgrounds as units.

Case studies, Visual perception, Vision disorders, Brain damage

---

Phasic alerting of neglect patients overcomes their spatial deficit in visual awareness

Article Abstract:

Patients with damage to the right hemisphere of the brain often show unilateral neglect of the left side of space. Such lesions also impair tonic alertness and the two impairments may be linked. Evidence supports the theory that phasically increasing the patients' alertness should temporarily ameliorate spatial bias in awareness, following investigations of right-hemisphere-neglect patients.

Observations, Brain research, Agnosia

Similar abstracts:

• Abstracts: Evidence for a selectively favourable reduction in the mutation rate of the X chromosome. The proteins of linked genes evolve at similar rates
• Abstracts: Managing the abundance and diversity of breeding bird population through manipulation of deer population. Coffee and conservation
• Abstracts: Avoidance of filial cannibalism by sexual and clonal forms of Poeciliopsis (Pisces: Poeciliidae). Sexual cannibalism in fishing spiders (Dolomedes triton): an evaluation of two explanations for female aggression towards potential mates
• Abstracts: The Endangered Species List. Until there are none, spay/neuter one
• Abstracts: Protostellar jets irradiated by massive stars. Resolution of the circumstellar gas around the Be star Psi Persei

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.