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Related Concept Videos

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Subliminal perception refers to the processing of sensory information that occurs below the level of conscious awareness. Researchers study subliminal perception by presenting a stimulus, such as a word or image, very quickly, typically around 50 milliseconds. This rapid presentation is often followed by another stimulus, such as a pattern of dots or lines, which blocks further mental processing of the initial stimulus. As a result, if participants cannot identify the initial stimulus better...
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Updated: May 10, 2026

Intracortical Inhibition Within the Primary Motor Cortex Can Be Modulated by Changing the Focus of Attention
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Attentional processes during submaximal exercises.

Valentina Perciavalle1, Giovanna Alagona, Tiziana Maci

  • 1Department of Sciences of Formation, University of Catania , Catania , Italy .

Somatosensory & Motor Research
|June 7, 2013
PubMed
Summary
This summary is machine-generated.

During aerobic exercise, attentional capabilities decline only when blood lactate levels exceed 4 mmol/l. This study investigated the link between exercise intensity, blood markers, and attention in athletes.

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Last Updated: May 10, 2026

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Area of Science:

  • Exercise Physiology
  • Cognitive Neuroscience

Background:

  • Aerobic exercise impacts physiological and cognitive functions.
  • Understanding the relationship between metabolic changes and attention during exercise is crucial for performance optimization.

Purpose of the Study:

  • To investigate the correlation between blood lactate and glucose levels and attentional performance in athletes.
  • To determine the threshold of blood lactate concentration associated with impaired attention during steady-state exercise.

Main Methods:

  • 15 healthy male athletes underwent a 30-minute steady-state exercise test at 60% and 80% of maximal oxygen consumption (VO2max).
  • Blood lactate and glucose levels were measured.
  • Intensity and selectivity of attention were assessed.

Main Results:

  • No significant worsening of attentional capabilities was observed at 60% VO2max.
  • Attentional decline was associated with blood lactate levels exceeding 4 mmol/l, particularly at 80% VO2max.
  • Glucose levels did not show a direct correlation with attentional changes within the tested range.

Conclusions:

  • Attentional capabilities in athletes remain largely unaffected during moderate aerobic exercise.
  • Elevated blood lactate levels (above 4 mmol/l) during strenuous aerobic exercise are a key indicator for potential attentional impairment.
  • Lactate threshold serves as a critical physiological marker for cognitive function during endurance activities.