@misc{alonso2021tightening,
  title={Tightening the Biological Constraints on Gradient-Based Predictive Coding},
  author={Nick Alonso and Emre Neftci},
  year={2021},
  eprint={2104.15137},
  archivePrefix={arXiv},
  primaryClass={cs.NE},
  doi={10.1145/3477145.3477148},
  url={https://arxiv.org/abs/2104.15137}
}