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Results for “Mental Recall”

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At least 19 recordsLinked to original sources
PubMed1978

[EEG asymmetry during mental arithmetic and recalls of verbal (kanji, kana, the alphabet) and visual imageries (author's transl)].

EEG was recorded from the left and the right parietal areas in normal subjects with eyes-closed while they were engaged in mental arithmetic, recalls of verbal (Japanese kanji characters, kana syllabary, and the alphabet) and visual (scenery) imageries. Fourier analysis of EEG revealed attenuations of the alpha activity (a) in the left hemisphere during the mental arithmetic, (b) in the right hemisphere during the visual imagination of a scenery, and (c) in the both hemispheres during the kanji imagery accompanies by a stroke-count task. Results suggest that the kanji characters seem to activate cognitive processes of the both hemispheres. No attenuation of the alpha activity in the both hemispheres was seen during either the alphabet or kana syllabary imagery.

Adult↗
PubMedDate not supplied

[Comments on sleep in Korsakoff's syndrome].

Twenty recordings of night sleep were made on ten patients with Korsakoff's syndrome. A large increase in time spent awake and in stage I sleep is reported as well as confused sleep cycles, increased ocular density in case of confabulation and dream accounts recalling mental activity from the previous day. Hippocampomamillary dysfunction appears to be responsible for disturbances in the cycles.

Adult↗
PubMed1979

Environmental determinants of memory improvement in late adulthood.

Two studies were conducted with nursing home residents to determine whether memory could be improved. This was accomplished by increasing the cognitive demand of the environment and then varying the extent to which residents were motivated to attend to and remember these environmental factors. In Study 1, motivation to practice recommended cognitive activities was manipulated by varying the degree of reciprocal self-disclosure offered by interviewers in a series of dyadic interactions. In Study 2, motivation to practice recommended cognitive activities was manipulated by varying whether positive outcomes were contingent on attending to and remembering these activities, which increased in demand over time. Whether as a function of interpersonal (Study 1) or practical (Study 2) incentives, engaging in cognitive activity resulted in improvement on standard short-term memory tests, including probe recall and pattern recall, as well as in improvement on nurses' ratings of alertness, mental activity, and social adjustment for experimental groups relative to controls.

Aged↗
PubMed1977

Effects of preferred stimuli on the free recall of moderately and severely mentally retarded children.

The effects of two types of stimuli, preferred and nonpreferred, on the free recall and clustering of 16 moderately and severely retarded public-school children were investigated. An empirical determination was made as to whether to classify a particular conceptual category of stimuli as preferred or nonpreferred. All subjects were presented with 18 objects from 6 conceptual categories in blocked condition. Both the preferred and nonpreferred stimuli were given to each subject in a counterbalanced order using a repeated measures design. Our major finding was that the use of preferred stimuli had a significant facilitating effect on recall but not clustering.

Child↗
PubMed1979

Sentence memory and sleep: a pilot study.

In four consecutive weekly sessions 12 subjects, aged 20--25 years, listened to a sentence stimulus before the onset of sleep and were asked to reproduce it after an awakening provoked during stage 2 or REM sleep of the first cycle. Recall of the sentence stimuli heard before sleep was affected by their semantic acceptability, but was unaffected by the sleep type (REM/NREM) or by the length of waking preceding sleep. The differing retention intervals involved for the recall tests after REM and NREM sleep may, however, have masked any effect of the former on recall.

Adult↗
PubMed1979

Negative recency and measurement of primary memory.

The technique of Waugh & Norman (1965) is widely used in measuring the capacity of primary memory. Watkins (1974) has proposed a modification of the technique which takes into account registration failure. A further modification is proposed which takes into account findings of negative recency in delayed recall.

Humans↗
PubMed1978

Recognition failure of recallable words and recognizable words.

Three experiments are reported introducing variations in testing mode and cuing context into the general procedures used to demonstrate recognition failure of recallable words. Recognition failure of recognizable words can be demonstrated when a cued recognition test replaces the cued recall test in these general procedures. Also, recall failure of recallable words can be demonstrated if an uncued recall test replaces the initial uncued recognition test. If the initial recognition test involves cued recognition, then both the recognition failure of recallable words and the recognition failure of recognizable words are attenuated. Recognition failure of recognizable words was also present when distractors were not used in recognition testing. It was concluded that recognition-failure phenomena represent a special class of context effects; that is, they simply result from removing original study cues from one testing context and restoring them in a second testing context. It was suggested that theories of memory that recognize that memory performance may be sensitive to testing context are not contraindicated by the demonstration of recognition failure of recallable words.

Adolescent↗