Contingent negative variation to tactile stimuli - differences in anticipatory and preparatory processes between participants with and without blindness

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Eva Breitinger - , Universität zu Köln (Autor:in)
  • Neil M. Dundon - , Albert-Ludwigs-Universität Freiburg, University of California at Santa Barbara (Autor:in)
  • Lena Pokorny - , Universität zu Köln (Autor:in)
  • Heidrun L. Wunram - , Universität zu Köln (Autor:in)
  • Veit Roessner - , Klinik und Poliklinik für Kinder- und Jugendpsychiatrie (Autor:in)
  • Stephan Bender - , Universität zu Köln (Autor:in)

Abstract

People who are blind demonstrate remarkable abilities within the spared senses and compensatory enhancement of cognitive skills, underscored by substantial plastic reorganization in relevant neural areas. However, little is known about whether people with blindness form top-down models of the world on short timescales more efficiently to guide goal-oriented behavior. This electroencephalography study investigates this hypothesis at the neurophysiological level, focusing on contingent negative variation (CNV) as a marker of anticipatory and preparatory processes prior to expected events. In sum, 20 participants with blindness and 27 sighted participants completed a classic CNV task and a memory CNV task, both containing tactile stimuli to exploit the expertise of the former group. Although the reaction times in the classic CNV task did not differ between groups, participants who are blind reached higher performance rates in the memory task. This superior performance co-occurred with a distinct neurophysiological profile, relative to controls: greater late CNV amplitudes over central areas, suggesting enhanced stimulus expectancy and motor preparation prior to key events. Controls, in contrast, recruited more frontal sites, consistent with inefficient sensory-aligned control. We conclude that in more demanding cognitive contexts exploiting the spared senses, people with blindness efficiently generate task-relevant internal models to facilitate behavior.

Details

OriginalspracheEnglisch
Seiten (von - bis)7582-7594
Seitenumfang13
FachzeitschriftCerebral cortex
Jahrgang33 (2023)
Ausgabenummer12
PublikationsstatusVeröffentlicht - 28 März 2023
Peer-Review-StatusJa

Externe IDs

PubMed 36977633

Schlagworte

Schlagwörter

  • blindness, contingent negative variation, electroencephalogram, event-related potentials, somatosensory memory, Touch Perception, Contingent Negative Variation, Blindness/physiopathology, Humans, Middle Aged, Male, Electroencephalography, Young Adult, Adolescent, Female, Adult

Bibliotheksschlagworte