välittäjäaineeseen

Välittäjäaineeseen is the illative singular form of välittäjäaine, Finnish for neurotransmitter. In neuroscience, a neurotransmitter is a chemical messenger released by neurons to transmit signals across synapses to target cells such as other neurons, muscle cells, or gland cells. The illative case -eseen expresses direction toward or into something, and in this usage it indicates actions directed at the neurotransmitter or processes that involve the neurotransmitter as their target.

In scientific Finnish, this form appears in common expressions like välittäjäaineeseen sitoutuminen (binding to the neurotransmitter) and välittäjäaineeseen liittyminen (interaction with the neurotransmitter). It is used to specify targets or pathways in neural signaling, for example in sentences describing how a drug affects the system via the neurotransmitter, or how receptors respond to the neurotransmitter.

It is important to distinguish the illative form from other cases of the same noun, such as the genitive välittäjäaineen or the partitive välittäjäainetta; the illative -eseen marks direction toward the object in contexts requiring the illative case. The form thus serves a precise syntactic function in Finnish, particularly in technical and educational texts on neuroscience and pharmacology.

See also: Välittäjäaine.