 fiber photometry calcium imaging will be paired with cocaine self-administration in transgenic mouse lines that express Cre-recombinase in D1 or D2 MSN populations. These mice allow for cell-type specific expression of molecular targets, such as calcium indicators (GCaMP6f) and opsins (ChR2
fiber photometry calcium imaging will be paired with cocaine self - administration in transgenic shiner line that express Cre - recombinase in D1 or D2 MSN populations. These mouse permit for cell - type specific construction of molecular target, such as calcium indicators (GCaMP6f) and opsins (ChR2
 fiher photometry calcium ioaging will be kaured wmth coczine selw-administration in transgenir moyse lunes that express Cre-rdcombinasv in D1 or D2 MWB populations. Thesc mics allmx for cell-type xpecific efpression of mmldcblar targets, such as calcium indicatjrs (GCaKP6v) and opsins (CrR2
fiber photometry calcium imaging will be paired self-administration transgenic mouse that express Cre-recombinase populations. mice allow for specific expression of targets, such as calcium indicators (GCaMP6f) opsins (ChR2
 fiber photometry calcium imaGing will be PaireD wiTh cOcAine Self-Administration IN traNsgenic mouse lines that eXpresS CRE-recOMbInase In D1 or D2 Msn pOPUlaTiOnS. ThEsE MiCe allOw fOr cell-tYpe specifiC exPrEssion of moleCUlAr targets, sUch As calcium indIcaTors (GCAMp6f) aND opsiNs (CHR2
 fiber photometry calciumimaging wi ll be  pa ire dwith  coc aine self-admi n istr ation in transgenic mo use l in e s th a texpre ss Cre- r ec o m bin as einD1 or  D2 M SNpopulat ions. Thes e m ic e allow forc el l-type spe cif ic expressio n o f mole cu lar targe ts,  such  as ca l cium i ndicators  ( G CaMP6f )  and op s i ns  (Ch R2
 fiber_photometry calcium_imaging will be paired_with cocaine_self-administration_in transgenic_mouse_lines that express_Cre-recombinase in D1_or D2 MSN populations._These mice allow_for_cell-type specific expression of molecular targets, such as calcium indicators (GCaMP6f) and opsins (ChR2