Hd 201
The Sennheiser HD 201 is a closed-back, circumaural headphone designed for professional audio applications. It features a frequency response of 21 Hz to 18 kHz and a sensitivity of 108 dB. The headphone is equipped with 32 mm dynamic drivers and a 3.5 mm audio connection.
25 protocols using hd 201
Assessing Motor Timing through Hand Tapping
Nociceptive-Specific Laser Stimulation and Multisensory Integration
The auditory stimuli included white noise and music excerpts. White noise was generated using free software Audacity (available at
Multimodal Language and Cognitive Assessments
As mentioned previously, participants in the present study were tested as part of a larger study. Children were tested individually by an experimenter in a quiet room either at home or at school. Testing lasted approximately three hours, divided over three testing sessions that lasted around an hour. In each of these sessions, one of the SL tasks was administered along with three or four of our linguistic or cognitive measures (each of these was measured only once). The order of the sessions (and the order of tasks within sessions) was counter-balanced: six testing orders were created to which participants were assigned randomly. Thus, the order of the SL tasks (order 1: A-NADL, SRT, VSL; order 2: SRT, VSL, A-NADL; order 3: VSL, A-NADL, SRT), as well as the linguistic and cognitive measures, was semi-randomized. Each child was rewarded for their participation with stickers on a diploma and a small present after completing the three sessions.
Comprehensive Neuropsychological Assessment Protocol
The visual neglect tests included: a line bisection test [57] , the apple test [3] (link), the clock task [20] (link), and a copying task (target: flower). For assessment of visual field defects static perimetry of 30° of the visual field was conducted with the contralesional eye. The Lang Test [28] and the Ishihara Colour Vision test [21] served as measures for stereoscopic and colour vision. An audiometry with 8 frequencies for each ear was applied for assessment of hearing.
Furthermore, patients were asked for impairments in the following domains: memory deficits, anomia, reading deficits, visual field defects, spatial orienting disorder and auditory impairments in relation to loudness, sound, voice, and music perception.
All following computer-based tests were performed at 60 cm distance from the screen and subjects wore headphones when required (Sennheiser HD 201). Spatial resolution of the monitor (Samsung Sync Master 1100 MB) was 1600 × 1200 pixels (2041 × 1617 arcmin) and the temporal resolution was 75 Hz. The fixation dot in each test had a size of 5 arcmin. Response time was ‘infinite’, i.e. the next trial started only after a response was given (enforced response).
Bimodal Hearing Device Calibration and Evaluation
Multimodal Cognitive Assessment Tasks
Musical Timing Perception Thresholds
Visual and Audiovisual Motion Direction Perception
Subjects had two colored buttons in their hands: the red one in the left and the green one in the right hand. In the frequency-based (vertical) configuration the red button should be pressed when a motion was perceived in downward direction and the green button should be pressed for an upward motion direction. In the spatial (horizontal) configuration the right (green) and left (red) hands corresponded to motions to the right and to the left.
All subjects accomplished all configurations in counterbalanced order (four audiovisual and two visual experimental conditions) with short breaks in between. During audiovisual conditions they wore headphones and were informed about hearing an auditory stimulus. For all conditions the subjects had to direct their attention to the visual stimulus on the screen and to respond to the perceived motion direction via button-press. The instruction to the participant was to press the button as fast as possible.
Auditory Tone Discrimination Experiment
Participants sat in front of a 17.3-in. laptop (HP ProBook 470 G4; temporal resolution: 60 Hz; spatial resolution: 1920 × 1080 pixels) at a distance of about 50 cm. A separate keyboard with marked response buttons was placed near the edge of the table, and the laptop was placed directly behind the keyboard. The laptop display was turned open 90 degrees towards the keyboard. The experiment was controlled with Presentation® (Version 18.1, Neurobehavioral Systems, Inc., Berkeley, CA,
Qualitative Assessment of Velcro-type Crackles
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