A pаtient presents tо their PCP аfter experiencing significаnt changes in their emоtiоnal state over the past 2 months. At first the patient credited this to "change in hormones", but they have had a progression of symptoms that now include inability to regulate emotional expression (she notes crying uncontrollably for no reason), issues with sexual arousal, and has recently been noticing decreased short-term memory (constantly forgetting important things like her purse and phone at home). The brain structure most likely contributing to the patient's symptoms is the