Showing papers in "Cortex in 1974"

TL;DR: Children's facility in “automatization” of naming different semantic categories is considered in terms of the contributions of overlearning, stimulus discriminability, “operativity”, word frequency and response competition; only the last two appear to be explanatory factors.

TL;DR: Patients with unilateral frontal or non-frontal lesions were given the WCST and medial frontal lesions were found to be significantly associated with poor performance on some aspects of the task.

TL;DR: It is suggested that both dominance for music and existence of less developed language areas in the right hemisphere are perhaps being used to support the damaged left hemisphere which continues to be language-dominant.

TL;DR: It was found that nonlinguistic tactile information was more efficiently processed in the right (nonspeech) hemisphere in neurologically intact individuals as had been previously inferred on the basis of the study of individuals with unilateral brain damage.

TL;DR: Results from the two experiments suggest that the right hemisphere is directly involved in the perception of intonation contours, and that normal language perception involves the active participation of both cerebral hemispheres.

TL;DR: An English version of three Italian tests of auditory verbal comprehension in aphasia, using picture-choice, was given to four groups of subjects, including the English Picture Vocabulary Test 3 and Raven's Standard Progressive Matrices.

TL;DR: Results add further confirmation to Milner's suggestion that inferior performance on the Wisconsin Card Sorting Test reflects a specific deficit in patients with damage to the dorsolateral frontal lobes.

TL;DR: It is suggested that the existence of such cases casts doubt on the contention that aphasia is the underlying mechanism of the Gerstmann syndrome, and the possible mechanisms of this are discussed.

TL;DR: Findings provide an unequivocal demonstration that laterality effects in audition are not solely determined by stimulus characteristics but are also dependent on task requirements.

TL;DR: It is suggested that the meaningful identification of nonsense patterns, which favors their recognition, is impaired as a consequence of left hemisphere lesions.

TL;DR: The results indicate that the early signs of Alzheimer's disease can be detected in aging patients with an underlying primary amentia of Down's syndrome.

TL;DR: A case of a right-handed man who developed a right hemiplegia, without aphasia, and also demonstrated an agraphia and an apraxia is presented, suggesting that although in this man the right hemisphere was dominant for language, the left hemisphere was dominance for handedness.

TL;DR: A detailed examination of the syndrome of alexia with transient agraphia revealed that two types of orthographic symbols in Japanese, kana (“syllabic” symbols) and kanji (’ideographic’ symbols), were impaired in different manners, i.e., the patient used different strategies in trying to retrieve graph-meaning associations of words written in each type of symbols.

TL;DR: The role of verbal mediation in visual short term memory was compared in aphasics and non-aphasic brain-injured controls, using an adaptation of Conrad's procedure.

TL;DR: In this paper, left-handed and right-handed 5-6 year old children were given Verbal and nonverbal (Performance) subtests of the Wechsler Intelligence Scale for Children (WISC) in order to reveal possible differences in abilities between the two groups.

TL;DR: The relatively high percentage of inconsistency of the results in the same subjects suggests some caution in using this technique as a measure of ear preference.

TL;DR: In this article, the presence or absence of 14 grammatical morphemes in their obligatory contexts was analyzed for 8 non-fluent aphasics and 5 normal controls and it was found that a stable difficulty ordering was found for the AAs, which differed from the invariant order of acquisition of these morpheme established for children.

TL;DR: Recognition memory was studied in severely head injured patients, using two measures (d' and β) based on Signal Detection Theory, which enable independent estimates to be made of the patient's memory capacity, and the degree of caution, or willingness to guess.

TL;DR: Despite gross impairment to comprehension, severe cases of aphasia nevertheless demonstrate some retained ability to distinguish commands, yes/no questions, and information questions from one another.

TL;DR: It was concluded that the presence of a semantic component aids in phonological production, but type of error and incidence of error depends upon many complex factors, which argues against the concept of specific level impairment.

TL;DR: Speed and accuracy in the discrimination of letters pairs and of unknown faces, and in the response to a light patch, have been tested in two groups of subjects and do not support an interpretation of lateral asymmetries in perception of letter and faces on the basis of selective pre-exposural attentional mechanisms.

TL;DR: Despite frequent response extinctions, no concurrent increase in counting errors was observed during bilateral input, indicating that interhemispheric interference in the present case takes the form of an all-or-none rivalry in some gating mechanism.

TL;DR: Commutation errors made by a group of aphasics in the repetition of words and nonsense syllables were analyzed in terms of degree of similarity to the desired phoneme, the entire stimulus, and other phonemes in the response using a distinctive feature description.

TL;DR: Right brain-damaged patients performed significantly worse than the left non aphasic group on the tactile embedded figures test, even if the findings point in the same direction as suggested by previous researches.

TL;DR: Results support the idea that the storage mechanism may be more sensitive to laterality differences than the perceiving and reporting mechanism.

TL;DR: Six-year-old black and white S s from low and middle socioeconomic classes (SEC) were presented a dichotic listening task composed of syllables pairs and evidenced a significant right-ear advantage (REA) at recall.

TL;DR: The results suggest that the previously reported superiority of right handers in perceiving and manipulating visuo-spatial relations also extends to the recall of this type of material.

TL;DR: A matching persistence index (MPI) has been devised which measures persistence in matching cells during block design performances and demonstrated that normals and brain-injured differ in style of problem solving during blockDesign performances.

TL;DR: This work was an attempt to reconcile divergent findings in monkeys with unilateral ablation of the hand area in the postcertral gyrus by exploring factors which might ameliorate the deficit: preoperative training on all tasks, a six-month recovery period, and complete or bilateral postcentral removals.