Neuroengineering, alternatively termed neural engineering or neurotechnology, constitutes a multifaceted domain that amalgamates insights from neuroscience, engineering, and computer science to pioneer technologies interfacing with the nervous system. Its paramount objective is twofold: deciphering the intricate functionalities of the nervous system and fostering innovative solutions targeting neurological disorders, augmenting human capacities, and establishing interfaces between the brain and external apparatus. The scope of neuroengineering spans across diverse research realms and practical applications, encompassing neural prosthetics, brain-computer interfaces (BCIs), neuromodulation, neuroimaging, and neural tissue engineering. Neural prosthetics, for instance, focus on crafting devices capable of either substituting or restoring lost sensory or motor functions among individuals grappling with disabilities. BCIs facilitate direct communication between the brain and external gadgets, enabling users to manipulate computers, robotic limbs, or other contraptions through mental commands alone. Neuromodulation techniques, exemplified by deep brain stimulation (DBS) and transcranial magnetic stimulation (TMS), entail precisely administering electrical or magnetic stimulation to particular brain regions for remedying neurological or psychiatric ailments. Neuroimaging technologies, including functional MRI (fMRI) and electroencephalography (EEG), empower researchers to visualize brain activities, unraveling the intricacies of inter-regional brain interactions during assorted tasks or states. Beyond medical applications, neuroengineering holds promise for augmenting human cognition and performance, with endeavors ranging from non-invasive brain stimulation techniques to heighten memory, attention, and learning capabilities in healthy individuals, to the development of virtual reality systems capable of evoking immersive experiences through targeted brain region stimulation. Collectively, neuroengineering epitomizes an evolving frontier with boundless potential to revolutionize our comprehension of the brain and fashion innovative technologies fostering human health and capabilities.