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Attentional modulation of the mismatch negativity elicited by frequency differences between binaurally presented tone bursts (1995)

TREJO, LEONARD J. ; RYAN-JONES, DAVID L. ; KRAMER, ARTHUR F.

Oxford, UK : Blackwell Publishing Ltd

Psychophysiology 32 (1995), S. 0

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ISSN: 1469-8986

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Medicine , Psychology

Notes: We examined the attentional sensitivity of the frequency-change mismatch negativity (MMN). Subjects listened to a binaural mixture of a narrative and a series of tone bursts that included 1200-Hz standards and two deviants (1000 and 1400 Hz). In the attend-tones condition, subjects responded to one deviant and ignored the narrative. In the attend-words condition, subjects responded to target words in the narrative and ignored the tones. Event-related potentials (ERPs) were recorded for the tones, and differences waves (deviant ERPs minus standard ERPs) were computed. Two negative peaks in the difference waves, DNI (100–180 ms) and DN2 (200–300 ms), overlapped the known scalp distribution and latency of the MMN. Mean DN1 and DN2 amplitudes were greater in the attend-tones condition than in the attend-words condition. These data suggest that the frequency-change MMN is modulated by nonspatial shifts of auditory attention.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1469-8986.1995.tb01214.x

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Using three-dimensional interactive graphics to teach equipment procedures (1997)

Hamel, Cheryl J. ; Ryan-Jones, David L.

Springer

Educational technology research and development 45 (1997), S. 77-87

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ISSN: 1556-6501

Source: Springer Online Journal Archives 1860-2000

Topics: Education

Notes: Abstract This report focuses on how 3-D graphical and interactive features of computer-based instruction can enhance learning and support human cognition during technical training of equipment procedures (where procedural training tasks are often highly specific to a piece of equipment). Studies of the effects of graphics, motion, and interactivity in technical training, and reports of successful instruction using state-of-the art graphics and animation were reviewed to extract a set of guidelines for using 3-D interactive graphics to teach equipment procedures.