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  • AEROSPACE MEDICINE  (2)
  • BEHAVIORAL SCIENCES  (1)
  • SPACE SCIENCES  (1)
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  • 1
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    On hemispheric differences in evoked potentials to speech stimuli (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Confirmation is provided for the belief that evoked potentials may reflect differences in hemispheric functioning that are marginal at best. Subjects were right-handed and audiologically normal men and women, and responses were recorded using standard EEG techniques. Subjects were instructed to listen for the targets while laying in a darkened sound booth. Different stimuli, speech and tone signals, were used. Speech sounds were shown to evoke a response pattern that resembles that to tone or clicks. Analysis of variances on peak amplitude and latency measures showed no significant differences between hemispheres, however, a Wilcoxon test showed significant differences in hemispheres for certain target tasks.
    Keywords: AEROSPACE MEDICINE
    Type: NASA-CR-143137
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    On hemispheric differences in evoked potentials to speech stimuli (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Subjects were asked to count the number of times a 'target' sound occurred in lists of speech sounds (pa or ba) or pure tones (250 or 600 c/sec) in which one of the sounds (the 'frequent') appeared about four times as often as the target. The response to both targets and frequents were separately averaged from electrodes at vertex at symmetrical left and right parietal locations. The expected sequence of deflections, including P3 waves with about 350 msec latency, was found in the responses to target stimuli. Very little difference was found between the right and left hemispheric responses to speech or pure tones, either frequent or target.
    Keywords: AEROSPACE MEDICINE
    Type: Electroencephalography and Clinical Neurophysiology; 39; Sept
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    On the interpretation of intensity ratios of forbidden iron and calcium transitions in the solar corona. (1969)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Intensity ratios effect of forbidden Fe and Ca transitions in solar corona on Fe/Ca ratio, noting cascading configurations
    Keywords: SPACE SCIENCES
    Type: COLLOQUE INTERNATIONAL D''ASTROPHYSIQUE; Jun 24, 1968 - Jun 26, 1968; LIEGE; BELGIUM|; YAL SOCIETY (
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    The division of attention and the human auditory evoked potential (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The sensitivity of the scalp-recorded, auditory evoked potential to selective attention was examined while subjects responded to stimuli presented to one ear (focused attention) and to both ears (divided attention). The amplitude of the N1 component was found to be largest to stimuli in the ear upon which attention was to be focused, smallest to stimuli in the ear to be ignored, and intermediate to stimuli in both ears when attention was divided. The results are interpreted as supporting a capacity model of attention.
    Keywords: BEHAVIORAL SCIENCES
    Type: Neuropsychologia; 15; 1977
    Format: text
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    NASA TECHNICAL REPORTS
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