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Abstracts
  • Von Steinbüchel, N., Wittmann, M., & Szelag, E. (1999). Temporal constraints of perceiving, generating, and integrating information: Clinical indications. Restorative Neurology and Neuroscience, 14(2–3), 167–182.

    Neuropsychological research on temporal constraints of perception and motor performance can add important information to research on human behavior. Without considering temporal mechanisms of perceiving, generating, and updating information, brain mechanisms can never be fully understood. In this study temporal aspects of performance in psychophysical experiments on three different temporal levels (around 30 ms, 300 ms, and 3000 ms) were investigated in patients with acquired brain lesions and a control group without neurological deficits. The patients had acquired focal brain lesions in: anterior (pre-central) regions of the left hemisphere (with non-fluent aphasia), posterior (post-central) regions of the left hemisphere (with fluent aphasia), the left hemipshere in predominantly subcortical regions (without aphasia), or anterior (pre-central) or posterior (post-central) regions of the right hemipshere. Perception of temporal order (20 to 60 ms) was impaired in patients with left-hemispheric post-central lesions; repetitive voluntary action (300 to 500 ms) was affected mostly in patients with left hemi-spheric lesions, both pre-central and post-central; and a deficit in integrating (2000 ms to 3000 ms) information was most pronounced in patients with left and right pre-central lesions. These findings provide insight into the associations between different levels of temporal organisation and circumscribed regions of the neocortex.

  • Berwanger, D., Wittmann, M., von Steinbüchel, N., & von Suchodoletz, W. (2004). Measurement of temporal-order judgment in children. Acta Neurobiologiae Experimentalis, 64(3), 387–394. https://doi.org/10.55782/ane-2004-1521

    Abnormal auditory temporal processing might be an underlying deficit in language disabilities. The auditory temporal-order threshold, one measure for temporal processing abilities, is defined as the shortest time interval between two acoustic events necessary for a person to be able to identify the correct temporal order. In our study, we examined the reliability of the auditory temporal-order threshold during a one-week period and over a time interval of four months in normally developing children aged 5 to 11 years. The results of our method show that children younger than 7 years have difficulties performing the task successfully. The reliability of the assessment of the temporal-order threshold during a period of one week is only moderate, and its stability over a time interval of four months is low. The results show that auditory-order thresholds in children have to be treated with caution. A high temporal-order threshold does not necessarily predict disabilities in temporal processing.

  • Wittmann, M., Burtscher, A., Fries, W., & von Steinbüchel, N. (2004). Effects of brain-lesion size and location on temporal-order judgment. Neuroreport, 15(15), 2401–2405. https://doi.org/10.1097/00001756-200410250-00020

    We assessed the effect of size and localization of a brain lesion on patients' abilities to perceive the temporal order of two acoustic stimuli. In those patients who had performed with impaired order thresholds, local overlaps of lesions as analyzed with CT were found in specific left-hemispheric regions of the temporal and parietal lobe. However, a moderate association of lesion size and temporal-order threshold was found among all brain-injured patients (n = 30), a correlation that was most pronounced in patients with right-hemispheric lesions. This non-specific effect of lesion size has to be discussed critically with respect to behavioral findings of an association between temporal-processing abilities and language competence.

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