Central auditory processing disorder (CAPD), as defined by the American Speech-Language-Hearing Association (ASHA), refers to difficulties in the perceptual processing of auditory information in the central nervous system and the neurobiological activity that underlies that processing and gives rise to electrophysiologic auditory potentials (ASHA,…

The article first discusses some recent work in time perception--in particular the distinction among prospective timing, retrospective timing, and passage of time judgments. The history and application of an "internal clock" model as an explanation of prospective timing performance is reviewed and contrasted with the different mechanisms needed…

In a series of experiments, the effect of white noise distortion and talker variation on lexical access in normal and Broca's aphasic participants was examined using an auditory lexical decision paradigm. Masking the prime stimulus in white noise resulted in reduced semantic priming for both groups, indicating that lexical access is degraded by…

Previous reports have demonstrated that the comprehension of sentences describing motion in a particular direction (toward, away, up, or down) is affected by concurrently viewing a stimulus that depicts motion in the same or opposite direction. We report 3 experiments that extend our understanding of the relation between perception and language…

Presents the gating paradigm as it is used in spoken word recognition research. In this task, a spoken-language stimulus is presented in segments of increasing duration and subjects are asked to propose the word being presented and to give a confidence rating after each segment. The advantages and problems associated with this task are discussed.…

Notes that phonemic restoration is a powerful auditory illusion. Points out that when part of an utterance is replaced by another sound, listeners perceptually restore the missing speech. Several paradigms measure this illusion and explore its bottom-up and top-down bases. Findings reveal that acoustic properties of the replacement sound strongly…

Notes that the primary use of sequence monitoring has been to determine which linguistic units are involved in word recognition and how these units might differ across languages. The task involves presenting subjects with targets either congruent or incongruent with a linguistic unit in the target-bearing item. The article focuses on the…

Describes a new paradigm that may be appropriate for uncovering speech perceptual codes. Illusory words are detected by blending two dichotic stimuli. The paradigm's design allows for comparison of different speech units by the manipulation of the distribution of information between two inputs. (23 references) (Author/CK)

Spoken language comprehension requires the coordination of different subprocesses in time. After the initial acoustic analysis the system has to extract segmental information such as phonemes, syntactic elements and lexical-semantic elements as well as suprasegmental information such as accentuation and intonational phrases, i.e., prosody.…

Describes the cross-modal semantic priming paradigm, including its underlying rationale and the different tasks with which it is combined. Introduces the type of stimuli used and the dependent and independent variables typically manipulated; discusses the paradigm's main advantages and drawbacks; and considers its most important areas of…

Following up on an earlier positron emission tomography (PET) experiment (Indefrey et al., 2001), we used a scene description paradigm to investigate whether a posterior inferior frontal region subserving syntactic encoding for speaking is also involved in syntactic parsing during listening. In the language production part of the experiment,…

Notes that speech intelligibility has traditionally been measured by presenting words mixed in noise to listeners for identification at different signal-to-noise ratios. The words are produced in isolation or in sequence contexts where the predictability of specific items can be varied. Emphasizes that the technique provides valuable data about…

Describes the different priming procedures and experimental variables used for gaining access to the nature of the lexical representation of morphological information and summarizes the experimental data collected across different languages. Notes that responses to a target word in auditory word recognition tasks can be facilitated when the word…

Reviews the syntactic priming task, a paradigm involving the presentation of a phrasal or clausal context, followed by the presentation of a target item for lexical decision or naming. Notes that response times are faster for targets syntactically congruent with the preceding context than for incongruent targets. Outlines how to administer this…

Infants prefer to listen to happy speech. To assess influences of speech affect on early lexical processing, 7.5- and 10.5-month-old infants were familiarized with one word spoken with happy affect and another with neutral affect and then tested on recognition of these words in fluent passages. Infants heard all passages either with happy affect…