Alterations in Brain Activity Induced by Transcranial Magnetic Stimulation and Their Relation to Decision Making

Area of Science:

• Neuroscience
• Cognitive Science
• Decision-Making Research

Background:

• Understanding the neural basis of conscious choice and decision-making is complex.
• Cognitive-motor functions are integral to how individuals make decisions.
• The influence of external stimuli on decision-making processes requires further investigation.

Purpose of the Study:

• To investigate the effects of inhibitory Transcranial Magnetic Stimulation (TMS) on choice bias.
• To explore the malleability of cognitive-motor functions in decision-making.
• To examine the neural underpinnings of conscious intention and choice.

Main Methods:

• Inhibitory Transcranial Magnetic Stimulation (TMS) applied to the left or right motor cortex.
• A choice task measuring screen side preference.
• Analysis of reaction times and choice attribution categories.

Main Results:

• Inhibitory TMS significantly biased screen side preference.
• Reaction times were not affected by TMS.
• Individual variability was observed in choice attribution, indicating complex decision-making processes.

Conclusions:

• Cognitive-motor processes in decision-making can be unconsciously influenced by TMS.
• Neural mechanisms, specifically motor cortex activity, play a role in choice bias.
• This research contributes to understanding the intricate link between neural circuits and conscious intention, advancing the study of free will.