Autonomic and cognitive control in memory: Investigating the psychophysiological link using heart rate variability...

Area of Science:

• Cognitive Neuroscience
• Psychophysiology
• Autonomic Nervous System Research

Background:

• Resting-state vagally mediated heart rate variability (vmHRV) is linked to cognitive functions like memory and cognitive control.
• The phasic interaction between cognitive processes and autonomic control, specifically vmHRV during memory tasks, remains underexplored.

Purpose of the Study:

• To investigate if vmHRV biofeedback can simultaneously enhance vmHRV during memory processing and cognitive control over long-term memory.
• To explore the psychophysiological associations between vmHRV and cognitive control in a memory task.

Main Methods:

• A within-between-subject experiment with 71 young healthy adults performing a false memory task in virtual reality.
• Participants practiced vmHRV biofeedback or a control breathing exercise before memory encoding and retrieval.
• vmHRV (RMSSD) and cognitive control (confidence in false memories, discrimination ability) were measured.

Main Results:

• vmHRV biofeedback did not significantly affect cognitive control measures or phasic vmHRV during the memory task.
• Neither resting-state nor phasic vmHRV showed a correlation with cognitive performance scores.
• Exploratory analyses indicated that baseline shifts in parasympathetic activity might confound psychophysiological associations.

Conclusions:

• The study could not verify the utility of vmHRV biofeedback for psychophysiological stimulation or its role in linking vmHRV to cognitive control over long-term memory.
• Further research is needed to clarify the complex relationship between cognition and vmHRV, considering potential confounding factors.