Bimodal Information Processing in a Sonar Task

Kobus, David A.; Lewandowski, Lawrence J.

doi:10.21236/ada170991

Cited by 3 publications

(6 citation statements)

References 22 publications

(24 reference statements)

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“…Likewise, in bimodal performance tasks there are times when operators, at least some of them, perform better in the auditory (versus visual) modality (see Kobus & Lewandowski, 1986 …”

Section: Discussionmentioning

confidence: 99%

Reported Modality Preferences of Sonar Operators

Kobus¹,

Lewandowski²

1991

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SummaryOne hundred forty-four sonar operators, 78 submarine (STS) and 66 surface (STG), completed a survey which questioned them in the areas of preferred work schedule, general modality preference, and modality preference for sonar operation.A majority of subjects reported being most alert and efficient between 8 a.m. and noon.STS operators had a strong preference for a 6 on/12 off work schedule. Responses to general modality questions indicated a preference for the visual modality, which was similar in proportion for both STS and STG groups. On questions pertinent to sonar operation, most operators indicated a visual preference.However, on two of these items, proportionally more STS than STG operators showed an auditory preference. Interestingly, 99% of all the subjects reported that present sonar systems are biased toward visual information.Yet, this survey showed that only 57% of the sonar operators rely on or feel they are better at utilizing visual information.The implications of individual operator differences Ad modality preferences as they relate to sonar task performance are discussed.

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“…Likewise, in bimodal performance tasks there are times when operators, at least some of them, perform better in the auditory (versus visual) modality (see Kobus & Lewandowski, 1986 …”

Section: Discussionmentioning

confidence: 99%

Reported Modality Preferences of Sonar Operators

Kobus¹,

Lewandowski²

1991

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“…Task performance has been observed to benefit from parallelism in sensory processing when separate stimuli are presented in the visual and auditory modalities (Doll and Hanna, 1989;Kobus and Lewandowski, 1986). Task performance has also been shown not to suffer from parallel stimuli presentations as in the demonstration of "virtually perfect timesharing" made by Schumacher et al (2001), showing how, under appropriate task instructions and conditions, at least some subjects can perform two choice reaction tasks with mean dual-task interference of less than 10 ms for the two tasks.…”

Section: Previous Research On Parallel Processingmentioning

confidence: 99%

Dual-Task Performance with Center-Surround Auditory-Only Displays

Santoro¹,

Wakefield²,

Kieras³

2009

PsycEXTRA Dataset

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The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to the Department of Defense, Executive Services and Communications Directorate (0704-0188). Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number.

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“…Such results have been demonstrated using simple stimuli as lights and tones (Nickerson, 1973) as well as more complex stimuli as sonar signals (Kobus et al, 1986), letters (Miller, 1982), and words (Lewandowski, Hursh, & Kobus, 1985). A long-standing interest in the processing of dual signals has been evidenced by sonar operators and research scientists working with sonar systems.…”

Section: Introductionmentioning

confidence: 98%

“…In a third study, Kobus and Lewandowski (1986) had shown that on a simulated sonar task, bimodal facilitation for redundant stimuli occurred across dependent measures. They found that the bimodal redundant target condition produced faster and more accurate responses than any other condition.…”

Section: Introductionmentioning

confidence: 99%

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Bimodal word processing: Speed, accuracy, and memory.

Lewandowski¹,

Kobus²,

Flood³

1989

PsycEXTRA Dataset

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A group of 20 experienced sonar operators (SO) was compared with a group of 20 non-operators (NO) on a computerized word decision task. The subjects had to respond quickly and accurately in determining whether a word/words presented visually and/or aurally (at the same time) was/were related to a given category (i.e., animals). Response speed, decision accuracy, and recall of words related and unrelated to the categories were recorded. Results indicated no group differences in any of the dependent measures, thus experience in a bimodal input situation did not provide sonar operators with a performance advantage on the experimental task. All 40 subjects performed faster and more accurately when the information was presented visually, and the words were related to a given category. Subjects performed about as quickly and accurately when the same word (related to the category) was presented concurrently in both modalities, however, recall of these words was significantly higher than all other conditions. Overall, the data are consistent with other studies which demonstrate no loss and some gain in the bimodal redundant (same word) condition. This study is one of the first to demonstrate an enhancement in higher level cognitive performance (such as memory recall) in a bimodal task.

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Bimodal Information Processing in a Sonar Task

Cited by 3 publications

References 22 publications

Reported Modality Preferences of Sonar Operators

Reported Modality Preferences of Sonar Operators

Dual-Task Performance with Center-Surround Auditory-Only Displays

Bimodal word processing: Speed, accuracy, and memory.

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