Good conferences on (computational) neuroscience in Europe and whether to submit to conference or journal? I'm looking for good (computational) neuroscience conferences in Europe that $\textbf{have proceedings}$. Recommendations? Or are there even such conferences? Should I just send my work to a journal? I'm new in neuroscience, and it seems (compared to CS/Physics) that conferences are not so respected in this field.
To touch on your broader question, as I understand getting full text publications in conferences are highly respected in computer science. In psychology and neuroscience (note I don't know so much about computational neuroscience), publishing papers in high impact journals is more respected in the field. While some conferences do have full-length papers, such publications often carry little weight. It is often tricky to even hunt down such conference proceedings. As such they are often barely part of the published research literature.  So yes, in psychology and neuroscience, you should generally submit your work to journals if you want to maximise its scientific impact.

That said, conferences are important in psychology and the neurosciences. As with any field, conferences are an important opportunity to network, share ideas, form collaborations, learn about developments and so on. A very common strategy is to present a work in progress at a conference. This allows you to set a preliminary deadline, get some feedback, and then refine your ideas before submitting to a journal.