The DOI matches its Crossref record; 14 of the 15 references it cites were found in a registry or an index.
The perceptron: A probabilistic model for information storage and organization in the brain.
Abstract
If we are eventually to understand the capability of higher organisms for perceptual recognition, generalization, recall, and thinking, we must first have answers to three fundamental questions: 1. How is information about the physical world sensed, or detected, by the biological system? 2. In what form is information stored, or remembered? 3. How does information contained in storage, or in memory, influence recognition and behavior? The first of these questions is in the
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A logical calculus of the ideas immanent in nervous activity
McCulloch, W. S., & Pitts, W. (1943) · The Bulletin of Mathematical Biophysics · doi:10.1007/bf02478259 · Cited by 18,566
Hebb, D. O. (2005) · doi:10.4324/9781410612403 · Cited by 9,825
Representation of Events in Nerve Nets and Finite Automata
Kleene, S. (1951) · Princeton University Press eBooks · doi:10.1515/9781400882618-002 · Cited by 1,927
Probabilistic Logic and the Synthesis of Reliable Organisms from Unreliable Components
von Neumann, J. (1956) · Cited by 1,652
(1952) · Medical Entomology and Zoology · Cited by 1,436
Kneale, M., & von Hayek, F. A. (1954) · The Philosophical Quarterly · doi:10.2307/2216396 · Cited by 494
Human Nature in the Light of Psychopathology
Goldstein, K. (1940) · Harvard University Press eBooks · doi:10.4159/harvard.9780674492103 · Cited by 286
Milner, P. M. (1957) · Psychological Review · doi:10.1037/h0042287 · Cited by 235
Human Nature in the Light of Psychopathology.
L., H. A., & Goldstein, K. (1941) · The Journal of Philosophy · doi:10.2307/2017294 · Cited by 126
McCulloch, W. S. (1950) · dialectica · doi:10.1111/j.1746-8361.1950.tb01019.x · Cited by 73
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Items 7,001–7,100 of 13,333
When Should We Expect Indirect Effects in Human Contingency Learning
Sternberg, D. A., & McClelland, J. L. (2009) · eScholarship (California Digital Library) · Cited by 3
SEARCHING FOR MINIMUM IN NEURAL NETWORKS
Vyšniauskas, V. (1994) · doi:10.3233/inf-1994-51-214 · Cited by 3
Hypertension diagnosis using compound pattern recognition methods
Krawczyk, B., & Woźniak, M. (2011) · Journal of Medical Informatics & Technologies · Cited by 3
Seleção de características de dados utilizando Redes Neurais Artificiais
Lima, Á., Lacerda, W. S., & Neto, H. S. (2017) · Anais do Simpósio Brasileiro de Sistemas de Informação (SBSI) · doi:10.5753/sbsi.2017.6035 · Cited by 3
On the Complexity of Rocchio’s Similarity-Based Relevance Feedback Algorithm
Chen, Z., & Fu, B. (2005) · Lecture notes in computer science · doi:10.1007/11602613_23 · Cited by 3
Mottaghitalb, M. (2012) · InTech eBooks · doi:10.5772/37551 · Cited by 3
Efficient single layer handwritten digit recognition through an optimizing algorithm
Ahmed, J., & Alkhalifa, E. M. (2002) · International Conference on Neural Information Processing · doi:10.1109/iconip.2002.1201937 · Cited by 3
Lim, S., & Hahn, J. (2005) · Lecture notes in computer science · doi:10.1007/11427469_167 · Cited by 3
Iterative autoassociative memory models for image recalls and pattern classifications
Chien, S., Kim, I., & Kim, D.-Y. (1991) · International Joint Conference on Neural Networks (IJCNN) · doi:10.1109/ijcnn.1991.170377 · Cited by 3
Rozza, G. L., da Silva, R. G., & Muller, S. I. M. G. (2015) · Revista Produção Online · doi:10.14488/1676-1901.v15i3.1941 · Cited by 3
Les réseaux de neurones artificiels: un apport potentiel aux études marketing
Boné, R., de Beauville, J. P. A., & Zollinger, M. (1996) · Recherche et Applications en Marketing (French Edition) · doi:10.1177/076737019601100205 · Cited by 3
Beken, M. (2010) · Modern Physics Letters B · doi:10.1142/s0217984910024213 · Cited by 3
Comparison of data-based methods for monitoring of air leakages into oxyfuel power plants
Preusche, R., Böhlmann, S., Ecke, H., & Gampe, U. (2011) · International journal of greenhouse gas control · doi:10.1016/j.ijggc.2011.05.024 · Cited by 3
Electrosynthetically patterned conducting polymer films for investigation of neural signaling
Simon, D. T., & Carter, S. A. (2006) · The Journal of Chemical Physics · doi:10.1063/1.2200348 · Cited by 3
Chiu, M., Yeh, L.-J., & Hsu, C.-J. (2008) · Journal of Applied Sciences · doi:10.3923/jas.2008.2814.2824 · Cited by 3
Error-driven generalist+experts (edge)
Huang, J., Madani, O., & Giles, C. L. (2008) · ACM International Conference on Information and Knowledge Management (CIKM) · doi:10.1145/1458082.1458097 · Cited by 3
Part 3: Brain science, information science and associative memory model
Okada, M. (2006) · New Generation Computing · doi:10.1007/bf03037297 · Cited by 3
Logical Machine Design II: A Selected Bibliography
Netherwood, D. B. (1959) · IRE Transactions on Electronic Computers · doi:10.1109/tec.1959.5222698 · Cited by 3
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Al‐Garni, A. Z., Jamal, A., Saeed, F., & Kassem, A. (2007) · 7th AIAA ATIO Conf, 2nd CEIAT Int'l Conf on Innov and Integr in Aero Sciences,17th LTA Systems Tech Conf; followed by 2nd TEOS Forum · doi:10.2514/6.2007-7854 · Cited by 3
Segatto, E. C., & Coury, D. V. (2006) · Sba Controle & Automação Sociedade Brasileira de Automatica · doi:10.1590/s0103-17592006000400004 · Cited by 3
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Loughran, B. (2009) · Cited by 3
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Jelali, S. E., Lyhyaoui, A., & Figueiras-Vidal, A. R. (2008) · Proceedings of the International Multiconference on Computer Science and Information Technology · doi:10.1109/imcsit.2008.4747229 · Cited by 3
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Tao, Q., & Scott, S. (2004) · Cited by 3
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Kim, J., Kwon, B. H., Kim, J. Y., & Kang, D. (2008) · International Workshop on Content-Based Multimedia Indexing (CBMI) · doi:10.1109/cbmi.2008.4564969 · Cited by 3
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Tikkala, A. (1998) · Nordic Journal of Linguistics · doi:10.1017/s0332586500004145 · Cited by 3
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Adewale, O. S., Adebiyi, A., Tech, M., & Solanke, O. O. (2007) · Cited by 3
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Khalid, A., Ghazanfar, M. A., Azam, A., & Alahmari, S. A. (2015) · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · doi:10.1117/12.2229516 · Cited by 3
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Arbib, M. A. (1996) · Behavioral and Brain Sciences · doi:10.1017/s0140525x00081516 · Cited by 3
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Pita‐Almenar, J. D., Ranganathan, G. N., & Koester, H. J. (2011) · Journal of Neurophysiology · doi:10.1152/jn.00245.2011 · Cited by 3
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Moldakarimov, S. B., & B, T. J. S. A. (2017) · Elsevier eBooks · doi:10.1016/b978-0-12-809324-5.21026-2 · Cited by 3
Neuromemristive Systems: A Circuit Design Perspective
Merkel, C. E., & Kudithipudi, D. (2017) · Cognitive systems monographs · doi:10.1007/978-81-322-3703-7_3 · Cited by 3
General or Universal Grammar from Plato to Chomsky
Maat, J. (2013) · Oxford University Press eBooks · doi:10.1093/oxfordhb/9780199585847.013.0018 · Cited by 3
Neural mechanisms for control in complex cognition.
Simen, P., & Polk, T. A. (2004) · Cited by 3
Towards Convolution Neural Networks (CNNs): A Brief Overview of AI and Deep Learning
Kaur, P., & Garg, R. (2020) · Lecture notes in networks and systems · doi:10.1007/978-981-15-0146-3_38 · Cited by 3
Deep Learning and Artificial Intelligence in Nuclear Cardiology
Filho, E. M. D. S., & Fernandes, F. D. A. (2021) · Springer eBooks · doi:10.1007/978-3-030-62195-7_32 · Cited by 3
Astray, G., Cid, A., Ferreiro-Lage, J. A., Gálvez, J. F., Mejuto, J. C., & Faza, O. N. (2010) · Journal of Chemical & Engineering Data · doi:10.1021/je100573n · Cited by 3
Search and learning for the linear ordering problem with an application to machine translation
Eisner, J. M., & Tromble, R. W. (2009) · Cited by 3
SEARCHING FOR STRUCTURE: THE GMDH ALGORITHM
Farlow, S. J. (1984) · Elsevier eBooks · doi:10.1016/b978-0-08-030156-3.50018-7 · Cited by 3
Demand-Driven Associative Classification
Veloso, A., & Meira, W. (2011) · SpringerBriefs in computer science · doi:10.1007/978-0-85729-525-5_4 · Cited by 3
Toennies, K. D. (2012) · Advances in computer vision and pattern recognition · doi:10.1007/978-1-4471-2751-2_12 · Cited by 3
Machine Learning Applied to Cognitive Communications
Bantouna, A., Tsagkaris, K. A., Stavroulaki, V., Demestichas, P., & Poulios, G. (2012) · Wiley eBooks · doi:10.1002/9781118360316.ch6 · Cited by 3
Klotz, G. A., & Stacey, D. (2006) · International Joint Conference on Neural Networks (IJCNN) · doi:10.1109/ijcnn.2005.1556003 · Cited by 3
Dung, L., & Mizukaw, M. (2008) · InTech eBooks · doi:10.5772/6255 · Cited by 3
Infant hip joint diagnostic support system based on clinical manifestations in X-ray images.
Honda, M., Arita, S., Mitani, S., Takeda, Y., Ozaki, T., Inamura, K., & Kanazawa, S. (2010) · PubMed · doi:10.18926/amo/40011 · Cited by 3
Convergence theorem for kernel perceptron
Ikeda, K. (2004) · International Conference on Neural Information Processing · doi:10.1109/iconip.2002.1202152 · Cited by 3
STAR - Sparsity through Automated Rejection
Burbidge, R., Trotter, M. W. B., Buxton, B. F., & Holden, S. B. (2001) · Lecture notes in computer science · doi:10.1007/3-540-45720-8_78 · Cited by 3
Osaragi, T. (2015) · ISPRS International Journal of Geo-Information · doi:10.3390/ijgi4031097 · Cited by 3
A Quadratic Lower Bound for Rocchio’s Similarity-Based Relevance Feedback Algorithm
Chen, Z., & Fu, B. (2005) · Lecture notes in computer science · doi:10.1007/11533719_96 · Cited by 3
Neural Architectures and Algorithms
Murray, A. (1995) · Springer eBooks · doi:10.1007/978-1-4757-2379-3_1 · Cited by 3
ARTIFICIAL NEURAL NETWORK TYPE LEARNING WITH SINGLE MULTIPLICATIVE SPIKING NEURON
Mishra, D., Yadav, A. K., Ray, S., & Kalra, P. K. (2007) · Cited by 3
Maschinelles Lernen und Data Mining
Ertel, W. (2009) · Vieweg+Teubner eBooks · doi:10.1007/978-3-8348-9989-7_8 · Cited by 3
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Rahman, M. S., Yu, X., & Srinivasan, B. (1999) · Lecture notes in computer science · doi:10.1007/3-540-46695-9_4 · Cited by 3
Committee Machine Networks to Diagnose Cardiovascular Diseases
Can, M. (2013) · Southeast Europe Journal of Soft Computing · doi:10.21533/scjournal.v2i1.49 · Cited by 3
Lower bounds in communication complexity and learning theory via analytic methods
Klivans, A. R., & Sherstov, A. A. (2009) · Cited by 3
Neural Network Systems Technology in the Analysis if Financial Time Series
Sitte, R., & Sitte, J. (2005) · Springer eBooks · doi:10.1007/978-1-4020-7829-3_43 · Cited by 3
Cerebellar model articulation controller (CMAC) for sequential images coding
Achmad, M. I., Adinugroho, H., & Susanto, A. (2014) · International Conference on Information Technology, Computer, and Electrical Engineering · doi:10.1109/icitacee.2014.7065734 · Cited by 3
Lai, D. S., Turck, S., Klimmek, C., & Clees, T. (2013) · Key engineering materials · doi:10.4028/www.scientific.net/kem.554-557.2472 · Cited by 3
Healing Truncation Bias: Self-Weighted Truncation Framework for Dual Averaging
Oiwa, H., Matsushima, S., & Nakagawa, H. (2012) · Proceedings · doi:10.1109/icdm.2012.33 · Cited by 3
Demystifying cognitive science: explaining cognition through network-based modeling
Soberano, E. K., & Kelty‐Stephen, D. G. (2015) · Frontiers in Physiology · doi:10.3389/fphys.2015.00088 · Cited by 3
Long-term changes of synaptic transmission: A topic of long-term interest
Calabresi, P., Pisani, A., & Bernardi, G. (1996) · Behavioral and Brain Sciences · doi:10.1017/s0140525x00081565 · Cited by 3
Kang, Y., Shen, P., Chen, C., Huang, C., & Yang, L. (2004) · Industrial Lubrication and Tribology · doi:10.1108/00368790410532183 · Cited by 3
Contextual modelling of the user browsing behaviour to identify the user's information need
Boughareb, D., & Farah, N. (2012) · International Conference on the Innovative Computing Technology (INTECH) · doi:10.1109/intech.2012.6457773 · Cited by 3
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Courtin, S., & Padovani, S. (2000) · Europhysics Letters (EPL) · doi:10.1209/epl/i2000-00240-x · Cited by 3
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Brouwer, R. K. (1999) · International Journal of Neural Systems · doi:10.1142/s0129065799000320 · Cited by 3
Machine learning approach for locating phase interfaces using conductivity probes
Reunanen, J., Mononen, M., Vauhkonen, M. J., Lehikoinen, A., & Kaipio, J. P. (2011) · Inverse Problems in Science and Engineering · doi:10.1080/17415977.2011.565338 · Cited by 3
DNA-like learning algorithm of CNN template implementing Boolean functions
Chen, F., Chen, G., & He, Q. (2009) · IEEE International Symposium on Circuits and Systems proceedings · doi:10.1109/iscas.2009.5118359 · Cited by 3
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Chacc, E. G., & Palacios, A. G. (2007) · Biological Research · doi:10.4067/s0716-97602007000500009 · Cited by 3
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PANWAR, H., & Gupta, S. (2012) · Advances in intelligent and soft computing · doi:10.1007/978-3-642-30157-5_38 · Cited by 3
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Meng, X., Chen, Z., & Spink, A. H. (2004) · International Conference on Information Technology: Coding and Computing (ITCC) · doi:10.1109/itcc.2003.1197517 · Cited by 3
Konwar, M., Sarma, D. K., Sharma, S., De, U. K., Pal, S., & Das, J. R. (2008) · Cited by 3
Adelani, D. I., & Traoré, M. K. (2015) · Advances in Complex Systems · doi:10.1142/s1793962316500057 · Cited by 3
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Minkov, E. (2015) · ACM Transactions on Intelligent Systems and Technology · doi:10.1145/2801131 · Cited by 3
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Radicioni, D. P., & Esposito, R. (2006) · Cited by 3
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Porto-Pazos, A. B., Pastur-Romay, L. A., Cedrón, F., & Pazos, A. (2015) · MOL2NET International Conference on Multidisciplinary Sciences (MOL2NET) · doi:10.3390/mol2net-1-e009 · Cited by 3
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Kubát, M. (2015) · Springer eBooks · doi:10.1007/978-3-319-20010-1_4 · Cited by 3
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Zheng, H.-T., & Zhang, H. (2015) · Lecture notes in computer science · doi:10.1007/978-3-319-25255-1_58 · Cited by 3
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Shimada, K., Muto, R., & Endo, T. (2012) · Journal of Advanced Computational Intelligence and Intelligent Informatics · doi:10.20965/jaciii.2012.p0687 · Cited by 3
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Frasconi, P. (2005) · CRC Press eBooks · doi:10.1201/9780849350351.ch8 · Cited by 3
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Pasanen, P., Uusitalo, M. A., Ermolov, V., Kivioja, J., & Gamrat, C. (2010) · Cambridge University Press eBooks · doi:10.1017/cbo9781139192255.005 · Cited by 3
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Bouaziz, M., Morchid, M., Dufour, R., & Linarès, G. (2016) · IEEE Spoken Language Technology Workshop (SLT) · doi:10.1109/slt.2016.7846269 · Cited by 3
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Bryson, J. J., Smaill, A., & Wiggins, G. A. (1992) · Cited by 3
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Garnham, A. (2013) · Oxford University Press eBooks · doi:10.1093/oxfordhb/9780199585847.013.0031 · Cited by 3
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Pehlevan, C., & Sengupta, A. M. (2017) · Signal Processing and Communications Applications Conference (SIU) · doi:10.1109/siu.2017.7960683 · Cited by 3
Hickton, L., Lewis, M., & Cañamero, L. D. (2017) · Lecture notes in computer science · doi:10.1007/978-3-319-64107-2_36 · Cited by 3
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Vatamanu, C., Cosovan, D., Gavriluţ, D. T., & Luchian, H. (2017) · Lecture notes in computer science · doi:10.1007/978-3-319-68612-7_29 · Cited by 3
Tormási, A., & Kóczy, L. T. (2018) · Studies in fuzziness and soft computing · doi:10.1007/978-3-319-75408-6_11 · Cited by 3
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Xia, X. (2018) · Springer eBooks · doi:10.1007/978-3-032-18842-7_14 · Cited by 3
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D’Rosario, M., & Hsieh, C. (2018) · International Journal of Strategic Decision Sciences · doi:10.4018/ijsds.2018100105 · Cited by 3
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Yang, X., Zhou, Q., Wang, J., Han, L., Feng, F., Zhou, R., & Li, K. (2019) · Microelectronics Journal · doi:10.1016/j.mejo.2019.02.018 · Cited by 3
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Cohen, S. B. (2019) · Synthesis lectures on human language technologies · doi:10.2200/s00905ed2v01y201903hlt041 · Cited by 3
Lakhtaria, K. I., & Modi, D. (2019) · Advances in computational intelligence and robotics book series · doi:10.4018/978-1-5225-7862-8.ch007 · Cited by 3
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Xu, D., Dai, W., Zhou, X., Fu, Y., Dai, Y., & Xu, D. (2018) · IEEE International Conference on Progress in Informatics and Computing · doi:10.1109/pic.2018.8706288 · Cited by 3
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Metadata
- Authors
- Rosenblatt, F.
- Corresponding author
- Rosenblatt, F.
- Venue
- Psychological Review
- Published
- 1958
- Volume
- 65
- Issue
- 6
- Pages
- 386-408
- ISSN
- 0033-295X (ISSN-L)
- 1939-1471
- OpenAlex
- W2040870580
- Semantic Scholar
- 5d11aad09f65431b5d3cb1d85328743c9e53ba96
- Cited by
- 12,280
- References
- 15
- Citations by year
- 2026: 659 · 2025: 1019 · 2024: 969 · 2023: 933 · 2022: 945 · 2021: 965 · 2020: 898 · 2019: 826 · 2018: 494 · 2017: 411 · 2016: 318 · 2015: 313 · 2014: 282 · 2013: 332 · 2012: 255
- FWCI
- 14.98
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Psychological Review (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Computer Science › Artificial Intelligence › Neural Networks and Applications
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
- Keywords
- perceptron, probabilistic models, information storage, memory, perceptual identification, generalization, memory retrieval
- MeSH terms
- Brain, Humans, Perception, Models, Statistical, Information Storage and Retrieval, Neural Networks, Computer
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