Differential impact of acute hypoxia on event related potentials

impaired task-irrelevant, but preserved task-relevant processing and response inhibition

Anna Altbäcker, E. Takács, Irén Barkaszi, Tamás Kormos, I. Czigler, László Balázs

Research output: Contribution to journalArticle

Abstract

The current study investigated how experimentally induced acute normobaric hypoxia affects attentional control functions during easy, monotonous visual sustained attention and response inhibition (modified Continuous Performance Task) and executive control tasks (number-size Stroop task). Along with behavioral efficiency, task-relevant and task-irrelevant information processing were investigated by measuring event related brain potentials (ERP) evoked by target stimuli (Target P3), task-relevant stimuli with no response needed (NoGo P3), and task-irrelevant novel stimuli (Novelty P3) during acute hypoxia exposure. Normobaric hypoxia was induced by adjusting the O 2 content of the breathing mixture to obtain 80% peripheral oxygen saturation, equivalent of 5500 m above sea level. Here we report decreased Novelty P3 during acute normobaric hypoxia exposure, while Target P3 and NoGo P3, as well as behavioral efficiency remained intact. Our paper is the first to provide evidence for impaired novelty processing along with intact task-relevant information processing and response inhibition during normobaric hypoxic exposure.

Original languageEnglish
Pages (from-to)28-36
Number of pages9
JournalPhysiology and Behavior
Volume206
DOIs
Publication statusPublished - Jul 1 2019

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Evoked Potentials
Automatic Data Processing
Efficiency
Executive Function
Task Performance and Analysis
Oceans and Seas
Respiration
Oxygen
Hypoxia
Inhibition (Psychology)
Brain

Keywords

  • Attentional control
  • Event related potentials
  • Normobaric hypoxia
  • Novelty processing
  • P300

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Behavioral Neuroscience

Cite this

Differential impact of acute hypoxia on event related potentials : impaired task-irrelevant, but preserved task-relevant processing and response inhibition. / Altbäcker, Anna; Takács, E.; Barkaszi, Irén; Kormos, Tamás; Czigler, I.; Balázs, László.

In: Physiology and Behavior, Vol. 206, 01.07.2019, p. 28-36.

Research output: Contribution to journalArticle

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