The concept of 'neuromarketing' has gained traction in recent years, blending neuroscience with consumer behavior research. By using functional magnetic resonance imaging (fMRI) and electroencephalography (EEG), researchers can observe brain activity in response to advertisements, product designs, or brand messages. Proponents argue that this approach provides objective, subconscious insights into consumer preferences that traditional surveys or focus groups may miss, as participants often cannot articulate their true motivations. However, critics raise ethical concerns about manipulation and the potential for invasive data collection. Moreover, the ecological validity of laboratory-based brain scans is questioned, since the artificial setting may not reflect real-world purchasing decisions, which are influenced by social context, price, and habit. Despite these debates, neuromarketing has evolved as a niche tool, not a replacement for established market research methods, but a complement that offers a deeper layer of understanding when used responsibly.