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Multimodal spatial attention - primary data from an EEG study of sighted and blind persons.

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Researchers

Name
Htting, Kirsten
Rsler, Frank
Rder, Brigitte

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Dataset Information

Title Multimodal spatial attention - primary data from an EEG study of sighted and blind persons.
Original Title Multimodale rumliche Aufmerksamkeit - Primrdaten einer EEG-Studie mit sehenden und blinden Personen.
Citation Htting, K., Rsler, F., & Rder, B. (2004). Multimodal spatial attention - primary data from an EEG study of sighted and blind persons. [Translated Title] (Version 1) [Files on DVD]. Trier: Center for Research Data in Psychology: PsychData of the Leibniz Institute for Psychology Information ZPID. https://doi.org/10.5160/psychdata.hgkn02ak22
Language of variable documentation German
Responsible for Data Collection Htting, Kirsten
Data Collection Completion Date 2002
Dataset Publication 2004
Dataset ID hgkn02ak22
Study Description There is a substantial amount of evidence which indicates that the processing of spatial representations is shared by different sensory systems. The present study investigated whether spatial attention is controlled in an overlapping fashion by both the tactile and auditory modality and whether these processes are influenced by sensory experiences. To this end, both sighted and congenitally blind subjects were examined using a paradigm for selective spatial attention while event-related potentials were simultaneously recorded. In different experimental blocks, subjects paid attention to sounds coming from a certain point in the room and to a specific sensory modality. In sighted subjects, the event-related potentials showed spatial attention effects not only for the attention modality, but also for the neglected modality. These results suggest a linked process of spatial attention between different sensory systems. The blind subjects, however, showed no spatial attention effects in the neglected modality in early event-related potentials. At later stages of processing, a slowdown of processing of irrelevant stimuli was evident. The results show that the specific linkage between the different sensory systems is influenced by sensory experiences and that the visual system plays a crucial role in training the auditory-tactile links. (For more details see Htting, Roesler, & Rder, 2003, 2004).
Hypotheses -
Keyphrase spatial attention in blind vs sighted persons, tactile vs auditory stimulation, left vs right stimulation, 15 blind vs 15 sighted persons aged 20-37, registration of event-related potentials & behavior data, primary data
Funding German Research Foundation; number Ro 1226/4-1, 4-2, 4-3.
Rating -

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PSYNDEX Classification and Controlled Terms

Classification Sensory Perception
Psychophysiology
Vision & Hearing & Sensory Disorders
Controlled Terms Spatial Perception
Auditory Perception
Tactual Perception
Intersensory Processes
Electroencephalography
Blind
Data Collection

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Research Method Description

Research Method Description Test Data
Classification of Data Collection Quasi-experimental design, mixed design, laboratory experiment
Research Instrument Event-related potentials (ERPs) to auditory stimuli (white noise from the left or right speaker) and tactile stimuli (metal pin on the left or right index finger) were collected under different attention conditions. Subjects were asked to respond only to a particular sensory modality that deviated from a given side. There were 4 different attention conditions: left tactile stimuli, right tactile stimuli, left auditory stimuli, and right auditory stimuli. Behavioral measures (reaction times, error rates) as well as the recordings of 61 EEG electrodes were recorded.
ERPs were calculated from these recordings based on the no-reaction relevant stimuli under said attention conditions. The mean amplitudes of selected time windows (100-170ms, 200-240ms, and 200-350ms for auditory potentials; 70-100ms, 125-175ms, and 200-280ms for tactile potentials) were exported as data matrices. For more detailed information see also Htting, Rsler, and Rder (2003, 2004).
Data Collection Method Data collection in the presence of an experimenter
- Individual Administration
- Computer-Supported
- special equipment/measuring instruments, EEG recordings
Time Points single measurement
Survey Time Period sighted subjects: 5/2001-8/2001,
blind subjects: 12/2001-6/2002
Characteristics -
Population healthy college students and subjects blind from birth
Experimental Pool Individuals
Sample Convenience sample
Subject Recruitment Fliers were posted in the Department of Psychology and the cafeteria of the University of Marburg. Recruitment of blind subjects for this study was done using the subject card index of the department of Cognitive Psychophysiology, University of Marburg. These blind subjects were originally recruited through the German Institute for the Blind (Deutsche Blindenstudienanstalt, Marburg) and the German Association of the Blind and Partially Sighted (Deutscher Verein der Blinden und Sehbehinderten, DVBS). Psychology undergraduates received test-subject credit hours while other participants were paid 7/hour.
Sample Size 30 individuals (15 sighted subjects and 15 blind subjects)
Return/Drop Out Only 1 sighted subject was not included in the sample due to technical difficulties during the experiment (a total of 16 sighted subjects participated).
Gender Distribution 53,3% female subjects (n=16)
46,7% male subjects (n=14)
Age Distribution 20-37 years
Special Groups sighted vs blind-from-birth test subjects
Country Germany
Region Hessen
City Marburg
Variables subject ID
subject description (age, gender, handedness, occupation, cause of blindness)
study group
electrode channels
behavioral data (response times, misses, false alarms)

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Data Status

Data Status Complete Data Set
Original Records individual process recordings using a computerized survey method (subject-related data files) specialized equipment recordings
Transformation The original data are made up of continuous EEG recordings. The transmission of the original recordings into a data matrix required complex experimental steps:
Calculation of ERPs: segmentation, exclusion of trials affected by artifacts, averaging each subject, baseline correction, and rereferencing. 3 subjects' noisy channels were replaced via interpolation using the mean value of all immediately adjacent channels, Vp 41 (L1_5, R1_5, L1_3), VP54 (L2_1, L2_4), Vp55 (L2_4).
In individual subjects, technical difficulties with the answer button or a misunderstanding of instructions during the test occurred. It was noted in which blocks this happened. These blocks were repeated at the end of the experiment and the notation marking the mistake was manually deleted from the CNT file (subject 46 (multiaud, block 6-8), subject 54 (multiaud, block 1), subject 62 (multitak block 10/11), and subject 72 (multiaud, block 3)).
Medium amplitudes of selected time slots were exported into a data matrix.
Behavioral data: subjects' responses to and reaction times for each stimulus, visual inspection of the data, and revisions when it came to interruptions or problems with the answer button during the experiment, aggregation of all trials of a subject.

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Description of the Provided Data

Description Primary data of the study (auditory; 100-170ms time window, all test subjects)
File Name hgkn02ak22_pd1.txt
Data Content 30 subjects, 258 variables
Data Points 30*258=7740 data points
Variables Subject ID (1), test group (1), electrode recordings (256)
MD5 Hash 8c2e04bebebb37a2fa8852cda649fba1
  
Description Primary data and derived data of the study (auditory; 100-170ms time window, all test subjects)
File Name hgkn02ak22_ad1.txt
Data Content 30 subjects, 334 variables
Data Points 30*334=10020 data points
Variables subject ID (1), test group (1), electrode recordings (256), averages of several electrodes (76)
MD5 Hash 877ab1da7b083a5202d82a1064e8e4bf
  
Description Primary data of the study (auditory; 200-240ms time window; all test subjects)
File Name hgkn02ak22_pd2.txt
Data Content 30 subjects, 258 variables
Data Points 30*258=7740 data points
Variables subject ID (1), test group (1), electrode recordings (256)
MD5 Hash 3cd99485d6ea95561b097552f216c9a8
  
Description Primary data and derived data of the study (auditory; 200-240ms time window, all test subjects)
File Name hgkn02ak22_ad2.txt
Data Content 30 subjects, 334 variables
Data Points 30*334=10020 data points
Variables subject ID (1), test group (1), electrode recordings (256), averages of several electrodes (76)
MD5 Hash 9cebe3a704ef45a2197fd954f40b306b
  
Description Primary data of the study (auditory; 200-350ms time window, only sighted subjects)
File Name hgkn02ak22_pd3.txt
Data Content 15 subjects, 258 variables
Data Points 15*258=3870 data points
Variables subject ID (1), test group (1), electrode recordings (256)
MD5 Hash 790aae0800aa3b1dcb5b80256cea74b9
  
Description Primary data and derived data of the study (auditory; 200-350ms time window, only sighted subjects)
File Name hgkn02ak22_ad3.txt
Data Content 15 subjects, 334 variables
Data Points 15*334=5010 data points
Variables subject ID (1), test group (1), electrode recordings (256), averages of several electrodes (76)
MD5 Hash 01bc98c5e2ec3c239598449606e3bd08
  
Description Primary data of the study (tactile, 70-100ms time window, all test subjects)
File Name hgkn02ak22_pd4.txt
Data Content 30 subjects, 258 variables
Data Points 30*258=7740 data points
Variables subject ID (1), test group (1), electrode recordings (256)
MD5 Hash 5f32930d360a9dac70272da6fdf064c5
  
Description Primary data and derived data of the study (tactil; 70-100ms time window; all test subjects)
File Name hgkn02ak22_ad4.txt
Data Content 30 subjects, 334 variables
Data Points 30*334=10020 data points
Variables subject ID (1), test group (1), electrode recordings (256), averages of several electrodes (76)
MD5 Hash d9e57a3fdbdd6f62172a12360a1df398
  
Description Primary study data (tactil; 125-175ms time window; all test subjects)
File Name hgkn02ak22_pd5.txt
Data Content 30 subjects, 258 variables
Data Points 30*258=7,740 data point
Variables subject ID (1), test group(1), electrode recordings (256)
MD5 Hash d7c18aacc29354dca33c45698dc88739
  
Description Primary data and derived data of the study (tactil; 125-175ms time window, all test subjects)
File Name hgkn02ak22_ad5.txt
Data Content 30 subjects, 334 variables
Data Points 30*334=10020 data points
Variables subject ID (1), test group (1), electrode recordings (256), averages of several electrodes (76)
MD5 Hash 2b44573fe2b3fd33e7008d0241be239d
  
Description Primary data of the study (tactil; 200-280ms time window; all test subjects)
File Name hgkn02ak22_pd6.txt
Data Content 30 subjects, 258 variables
Data Points 30*258=7740 data points
Variables subject ID (1), test group (1), electrode recordings (256),
MD5 Hash 44a83c58b43e8de0b9002c3ad37f0d72
  
Description Primary data and derived data of the study (tactil; 200-280ms time window, all test subjects)
File Name hgkn02ak22_ad6.txt
Data Content 30 subjects, 334 variables
Data Points 30*334=10020 data points
Variables subject ID (1), test group (1), electrode recordings (256), averages of several electrodes (76)
MD5 Hash e23d2493f117a28e90ec9dd355f6cbcc
  
Description Primary data of the study (behavioral data, all test subjects)
File Name hgkn02ak22_pd7.txt
Data Content 30 subjects, 14 variables
Data Points 30*14=420 data points
Variables subject ID (1), test group (1), reaction times (4), misses (4), false alarm (4)
MD5 Hash b00a0c7c9073ffb8bddaef4bd6158ebc
  
Description Primary data and derived data of the study (behavioral data; all test subjects)
File Name hgkn02ak22_ad7.txt
Data Content 30 subjectss, 32 variables
Data Points 30*32=960 data points
Variables subject ID (1), test group (1), reaction times (4), misses (4), false alarm (4), mean reaction times to different stimuli (2), combined values for misses (8), combined values for false alarms (8 )
MD5 Hash 6231203f61cb701630eacf04554ee34e
  
Description Primary data of the study (subjects' characteristics, all test subjects)
File Name hgkn02ak22_pd8.txt
Data Content 30 subjects, 7 variables
Data Points 30*7=210 data points
Variables subject ID (1), test group (1), age (1), gender (1), handedness (1), occupation (1), cause of blindness (1)
MD5 Hash d45f04c5f304e26391031d6c4490c46a
  

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Description of Additional Materials

Description File Name
German codebook of primary dataset hgkn02ak22_pd1.txt (auditory, 100-170ms time window, all test subjects) hgkn02ak22_kb1.txt
German codebook of primary dataset hgkn02ak22_pd2.txt (auditory; 200-240ms time window; all test subjects) hgkn02ak22_kb2.txt
German codebook of primary dataset hgkn02ak22_pd3.txt (auditory; 200-350ms time window; only sighted subjects hgkn02ak22_kb3.txt
German codebook of primary data set hgkn02ak22_pd4.txt (tactil; 70-100ms time window; all test subjects) hgkn02ak22_kb4.txt
German codebook of primary dataset hgkn02ak22_pd5.txt (tactil; 125-175ms time window; all test subjects) hgkn02ak22_kb5.txt
German codebook of primary dataset hgkn02ak22_pd6.txt (tactil; 200-280ms time window; all test subjects) hgkn02ak22_kb6.txt
German codebook of primary dataset hgkn02ak22_pd7.txt (behavioral data; all test subjects) hgkn02ak22_kb7.txt
German Codebook of primary dataset hgkn02ak22_pd8.txt (subjects characteristics; all test subjects) hgkn02ak22_kb8.txt
Instructions concerning the formation of derived variables in data files hgkn02ak22_pd1 to hgkn02ak22_pd6 (auditory or tactile, different time windows, different subject groups) hgkn02ak22_aa1.txt
Instructions concerning formation of the derived variables in data file hgkn02ak22_pd7 (behavioral data, all test subjects) hgkn02ak22_aa2.txt
Outline of the placement of the electrodes hgkn02ak22_iz1.pdf
Original recordings of the study (sighted subjects), 30 CNT files hgkn02ak22_dvd1 hgkn02ak22_dvd1
Original recordings of the study (blind subjects); CNT files hgkn02ak22_dvd2 31 hgkn02ak22_dvd2
Trigger signals of the EEG experiment hgkn02ak22_iz2.pdf

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Publications Directly Related to the Dataset

Publications Directly Related to the Dataset
Htting, K., Rsler, F. & Rder, B. (2003). Crossmodal and intermodal attention modulate event-related brain potentials to tactile and auditory stimuli. Experimental Brain Research, 148, 26-37.Datensatz 0173511
Htting, K., Rsler, F. & Rder, B. (2004). Altered auditory-tactile interactions in congenitally blind humans: an event-related potential study. Experimental Brain Research, published online 06 July 2004. DOI: 10.1007/s00221-004-1965-3. Datensatz 0177772

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Center for Research Data in Psychology
54296 Trier, Germany
Phone: +49 (0)651 201-2062
Fax: +49 (0)651 201-2071


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