This chapter contains sections titled: The Problem, The Generalized Delta Rule, Simulation Results, Some Further Generalizations, Conclusion

/pdf/learning-internal-representations-by-error-propagation-100fypr7vm.pdf

Learning internal representations by error propagation

Thank you for downloading using multivariate statistics. As you may know, people have look hundreds times for their favorite novels like this using multivariate statistics, but end up in infectious downloads. Rather than reading a good book with a cup of tea in the afternoon, instead they juggled with some harmful bugs inside their laptop. using multivariate statistics is available in our digital library an online access to it is set as public so you can download it instantly. Our books collection saves in multiple locations, allowing you to get the most less latency time to download any of our books like this one. Merely said, the using multivariate statistics is universally compatible with any devices to read.

Using Multivariate Statistics

The unity and diversity of executive functions and their contributions to complex "Frontal Lobe" tasks: a latent variable analysis.

We review evidence for partially segregated networks of brain areas that carry out different attentional functions. One system, which includes parts of the intraparietal cortex and superior frontal cortex, is involved in preparing and applying goal-directed (top-down) selection for stimuli and responses. This system is also modulated by the detection of stimuli. The other system, which includes the temporoparietal cortex and inferior frontal cortex, and is largely lateralized to the right hemisphere, is not involved in top-down selection. Instead, this system is specialized for the detection of behaviourally relevant stimuli, particularly when they are salient or unexpected. This ventral frontoparietal network works as a 'circuit breaker' for the dorsal system, directing attention to salient events. Both attentional systems interact during normal vision, and both are disrupted in unilateral spatial neglect.

Control of goal-directed and stimulus-driven attention in the brain

▪ Abstract The prefrontal cortex has long been suspected to play an important role in cognitive control, in the ability to orchestrate thought and action in accordance with internal goals. Its neural basis, however, has remained a mystery. Here, we propose that cognitive control stems from the active maintenance of patterns of activity in the prefrontal cortex that represent goals and the means to achieve them. They provide bias signals to other brain structures whose net effect is to guide the flow of activity along neural pathways that establish the proper mappings between inputs, internal states, and outputs needed to perform a given task. We review neurophysiological, neurobiological, neuroimaging, and computational studies that support this theory and discuss its implications as well as further issues to be addressed

/pdf/an-integrative-theory-of-prefrontal-cortex-function-2j9unprn5f.pdf

An integrative theory of prefrontal cortex function

Five experiments are described concerning verbal short-term memory performance of a patient who has a very markedly reduced verbal span. The results of the first three, free recall, the Peterson pr...

Independent functioning of verbal memory stores: a neuropsychological study

List of contributors Acknowledgements General introduction Part I. The Functional Architecture of Auditory-Verbal (Phonological) Short-Term Memory and its Neural Correlates: 1. The impairment of auditory-verbal short-term storage Tim Shallice and Giuseppe Vallar 2. The development of the concept of working memory: implications and contributions of neuropsychology Alan D. Baddeley 3. Multiple phonological representations and verbal short-term memory Frances J. Friedrich 4. Electrophysiological measures of short-term memory Arnold Starr, Geoffrey Barrett, Hillel Pratt, Henry J. Michalewski and Julie V. Patterson Part II. Phonological Short-Term Memory and Other Levels of Information Processing: Studies in Brain-Damaged Patients with Defective Phonological Memory: 5. Auditory and lexical information sources in immediate recall: evidence from a patient with deficit to the phonological short-term store Rita Sloan Berndt and Charlotte C. Mitchum 6. Neuropsychological evidence for lexical involvement in short-term memory Eleanor M. Saffran and Nadine Martin 7. Auditory-verbal span of apprehension: a phenomenon in search of a function? Rosaleen A. McCarthy and Elizabeth K. Warrington 8. Short-term retention without short-term memory Brian Butterworth, Tim Shallice and Frances L. Watson Part III. Short-Term Memory Studies in Different Populations (Children, Elderly, Amnesics) and of Different Short-Term Memory Systems: 9. Developmental fractionation of working memory Graham J. Hitch 10. Adult age differences in working memory Fergus I. M. Craik, Robin G. Morris and Mary L. Gick 11. Lipreading, neuropsychology and immediate memory Ruth Campbell 12. Memory without rehearsal David Howard and Sue Franklin 13. The extended present: evidence from time estimation by amnesics and normals Marcel Kinsbourne and Robert E. Hicks Part IV. Phonological Short-Term Memory and Sentence Comprehension: 14. Short-term memory and language comprehension: a critical review of the neuropsychological literature David Caplan and Gloria S. Waters 15. Neuropsychological evidence on the role of short-term memory in sentence processing Randi C. Martin 16. Short-term memory impairment and sentence processing: a case study Eleanor M. Saffran and Nadine Martin 17. Phonological processing and sentence comprehension: a neuropsychological case study Giuseppe Vallar, Anna Basso and Gabriela Bottini 18. Working memory and comprehension of spoken sentences: investigation of children with reading disorder Stephen Crain, Donald Shankweiler, Paul Macaruso and Eva Bar-Shalom Name index Subject index.

Neuropsychological impairments of short-term memory

/pdf/the-selective-impairment-of-auditory-verbal-short-term-2scqshxf0s.pdf

The selective impairment of auditory verbal short-term memory

A multidisciplinary approach to anterior attentional functions.

In this study we have reported our investigation of two patients with an acquired dyslexia characterized by letter-by-letter reading, whole word reading being apparently impossible. It has been shown that this phenomenon of letter-by-letter reading cannot be accounted for by visual or perceptual factors nor by impairment of visual span of apprehension. The exceptionally slow speed of reading was documented and a clear relationship between word length and reading speed established. Performance on tasks considered to maximize whole word reading which at the same time prevent the possibility of letter-by-letter reading, namely, reading script and reading with tachistoscopic presentation, was impaired. The satisfactory performance of these two patients on tasks of picture interpretation suggests that the two components of the syndrome simultanagnosia, letter-by-letter reading and piecemeal perception of complex scenes, are dissociable. Three alternative explanations of letter-by-letter reading are considered and we conclude that in this type of acquired dyslexia there is damage to the system through which a visual word-form is attained.

Tim Shallice

Papers

Independent functioning of verbal memory stores: a neuropsychological study

Neuropsychological impairments of short-term memory

The selective impairment of auditory verbal short-term memory

A multidisciplinary approach to anterior attentional functions.

Word-form dyslexia