Estimates and estimate-based inferences in young children

The ability of children to perform in estimation-based inference tasks was studied in two experiments. In the first study, children in the CA range 5-7 years were tested for their ability to make increasingly accurate estimates of proportions as a function of CA. A simple visual judgment task which did not involve either verbal stimuli or responses was judgment task was found that there was above-chance level performance at all CA levels and that performance improved as a function of CA. In the second study, measures of the ability to make quantitative inferences were also studied in children in the CA range 6-8 years. It was hypothesized that: (1) performance would be above-chance level at all ages; (2) inferential performance would improve with increasing CA; (3) conservatism, defined here as the constriction of responses to the middle of the response scale, would vary inversely with performance level; and (4) attention strategies would be a significant determiner of performance. All of the hypotheses except (2) were supported. The results were discussed in terms of cognitive models which consider inference strategies and the role of language in the development of these strategies. The studies provide evidence that accurate but nonlogical modes of inference operate in the performance of children within the CA range tested.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/33710/1/0000222.pd

A spatial feature extraction and regularization model for the head-related transfer function

This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder

External ear transfer function modeling: a beamforming approach

This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder

Auditory neuropathy: a report on three cases with early onsets and major neonatal illnesses

info:eu-repo/semantics/publishe

Temporal distortion products (kernel slices) evoked by maximum-length sequences in auditory neuropathy: evidence for a cochlear pre-synaptic origin

info:eu-repo/semantics/publishe

Locating chronically implanted subdural electrodes using surface reconstruction

ObjectiveTo determine the accuracy of locating subdural electrodes by means of 3-D surface rendering of CT scans. MethodsOpen source software has been developed and posted on the web which segments the electrodes into 3-D surfaces and allows their 3-D locations to be exported to other EEG analysis programs. The accuracy of the technique was determined by studying 410 subdural electrodes implanted in four epilepsy patients. Accuracy was determined by comparing the locations from the rendering analysis to the locations of the same electrodes determined by conventional analysis of their appearance on individual CT slices.ResultsThe average accuracy of a study of 410 electrodes imaged in four patients repeated two times by three observers was 0.91 (±0.41) mm, with a maximum error of 3.3 mm, about half of the diameter of an electrode.ConclusionsThe location of subdural electrodes can easily and quickly be determined within high-resolution CT scans through the use of 3-D rendering.SignificanceThis relatively fast and easy method for determining the location of subdural electrodes should facilitate their use in both clinical and research investigations