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<p>While historically, neurobiology and neuroscience were used interchangeably it is now widely accepted that the two fields are distinct. While neurobiology refers specifically to the biology of the nervous system, neuroscience refers to the entire science of the nervous system. The scope of neuroscience is therefore much broader than neurobiology and includes different approaches used to study the molecular, developmental, structural, functional, evolutionary, computational, and medical aspects of the nervous system. Even the tools and methods used are different. The weapon of choice of neuroscientists is medical imaging most specifically fMRI or PET, not available in biology departments. These systems cost millions of dollars and require dedicated technical staffs. </p>
<p>Most advanced work in neuroscience is now done in dedicated departments and labs not attached to biology departments. A number of top universities have graduate neuroscience departments. These departments with their resources and course offerings are just not accessible to undergrads except at a handful of institutions. At places such as MIT, there is no restriction on what classes undergrads can take and many classes are joint grad/undergrad.</p>