Document (#22237)

Author

Iversen, L.L.

Title

¬Die Chemie der Signalübertragung im Gehirn

Source

Spektrum der Wissenschaft. 1979, H.11, S.94-105

Year

1979

Abstract

Nervensignale sind elektrischer Natur, solange sie sich längs einer Nervenfaser fortpflanzen. Erreichen sie das Ende der Faser, so müssen sie den Zwischenraum zur nächsten Zelle gewöhnlich auf chemische Weise, das heißt mit Hilfe von Transmittersubstanzen, überspringen

Similar documents (content)

1. pcb: Neuronale Netze (2001) 0.32

   0.31591436 = sum of:
     0.31591436 = product of:
       0.8950907 = sum of:
         0.021231448 = weight(abstract_txt:sich in 6628) [ClassicSimilarity], result of:
           0.021231448 = score(doc=6628,freq=1.0), product of:
             0.05457623 = queryWeight, product of:
               3.5567884 = idf(docFreq=3444, maxDocs=44421)
               0.0153442435 = queryNorm
             0.38902372 = fieldWeight in 6628, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.5567884 = idf(docFreq=3444, maxDocs=44421)
               0.109375 = fieldNorm(doc=6628)
         0.027617555 = weight(abstract_txt:einer in 6628) [ClassicSimilarity], result of:
           0.027617555 = score(doc=6628,freq=1.0), product of:
             0.06503402 = queryWeight, product of:
               1.0916126 = boost
               3.882635 = idf(docFreq=2486, maxDocs=44421)
               0.0153442435 = queryNorm
             0.42466322 = fieldWeight in 6628, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.882635 = idf(docFreq=2486, maxDocs=44421)
               0.109375 = fieldNorm(doc=6628)
         0.040154416 = weight(abstract_txt:sind in 6628) [ClassicSimilarity], result of:
           0.040154416 = score(doc=6628,freq=2.0), product of:
             0.06624646 = queryWeight, product of:
               1.1017412 = boost
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.0153442435 = queryNorm
             0.6061368 = fieldWeight in 6628, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.109375 = fieldNorm(doc=6628)
         0.17899333 = weight(abstract_txt:gehirn in 6628) [ClassicSimilarity], result of:
           0.17899333 = score(doc=6628,freq=2.0), product of:
             0.17943135 = queryWeight, product of:
               1.813207 = boost
               6.449194 = idf(docFreq=190, maxDocs=44421)
               0.0153442435 = queryNorm
             0.99755883 = fieldWeight in 6628, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               6.449194 = idf(docFreq=190, maxDocs=44421)
               0.109375 = fieldNorm(doc=6628)
         0.16790853 = weight(abstract_txt:natur in 6628) [ClassicSimilarity], result of:
           0.16790853 = score(doc=6628,freq=1.0), product of:
             0.21663682 = queryWeight, product of:
               1.9923443 = boost
               7.086347 = idf(docFreq=100, maxDocs=44421)
               0.0153442435 = queryNorm
             0.77506924 = fieldWeight in 6628, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.086347 = idf(docFreq=100, maxDocs=44421)
               0.109375 = fieldNorm(doc=6628)
         0.45918542 = weight(abstract_txt:zelle in 6628) [ClassicSimilarity], result of:
           0.45918542 = score(doc=6628,freq=1.0), product of:
             0.4236519 = queryWeight, product of:
               2.7861392 = boost
               9.909708 = idf(docFreq=5, maxDocs=44421)
               0.0153442435 = queryNorm
             1.0838743 = fieldWeight in 6628, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               9.909708 = idf(docFreq=5, maxDocs=44421)
               0.109375 = fieldNorm(doc=6628)
       0.3529412 = coord(6/17)
   

2. Neunzert, H.: ¬Die Zukunft der Mathematik : nicht mehr Königin, aber wichtiger Partner von Wissenschaft und Technik (2002) 0.22

   0.22463518 = sum of:
     0.22463518 = product of:
       0.4243109 = sum of:
         0.021447001 = weight(abstract_txt:sich in 130) [ClassicSimilarity], result of:
           0.021447001 = score(doc=130,freq=8.0), product of:
             0.05457623 = queryWeight, product of:
               3.5567884 = idf(docFreq=3444, maxDocs=44421)
               0.0153442435 = queryNorm
             0.3929733 = fieldWeight in 130, product of:
               2.828427 = tf(freq=8.0), with freq of:
                 8.0 = termFreq=8.0
               3.5567884 = idf(docFreq=3444, maxDocs=44421)
               0.0390625 = fieldNorm(doc=130)
         0.013948971 = weight(abstract_txt:einer in 130) [ClassicSimilarity], result of:
           0.013948971 = score(doc=130,freq=2.0), product of:
             0.06503402 = queryWeight, product of:
               1.0916126 = boost
               3.882635 = idf(docFreq=2486, maxDocs=44421)
               0.0153442435 = queryNorm
             0.21448731 = fieldWeight in 130, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.882635 = idf(docFreq=2486, maxDocs=44421)
               0.0390625 = fieldNorm(doc=130)
         0.014340864 = weight(abstract_txt:sind in 130) [ClassicSimilarity], result of:
           0.014340864 = score(doc=130,freq=2.0), product of:
             0.06624646 = queryWeight, product of:
               1.1017412 = boost
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.0153442435 = queryNorm
             0.21647744 = fieldWeight in 130, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.0390625 = fieldNorm(doc=130)
         0.029828088 = weight(abstract_txt:müssen in 130) [ClassicSimilarity], result of:
           0.029828088 = score(doc=130,freq=1.0), product of:
             0.13600016 = queryWeight, product of:
               1.5785849 = boost
               5.6146927 = idf(docFreq=439, maxDocs=44421)
               0.0153442435 = queryNorm
             0.21932393 = fieldWeight in 130, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6146927 = idf(docFreq=439, maxDocs=44421)
               0.0390625 = fieldNorm(doc=130)
         0.040406656 = weight(abstract_txt:ende in 130) [ClassicSimilarity], result of:
           0.040406656 = score(doc=130,freq=1.0), product of:
             0.16650389 = queryWeight, product of:
               1.7466683 = boost
               6.2125297 = idf(docFreq=241, maxDocs=44421)
               0.0153442435 = queryNorm
             0.24267694 = fieldWeight in 130, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.2125297 = idf(docFreq=241, maxDocs=44421)
               0.0390625 = fieldNorm(doc=130)
         0.057162106 = weight(abstract_txt:heißt in 130) [ClassicSimilarity], result of:
           0.057162106 = score(doc=130,freq=1.0), product of:
             0.20982695 = queryWeight, product of:
               1.96078 = boost
               6.9740796 = idf(docFreq=112, maxDocs=44421)
               0.0153442435 = queryNorm
             0.272425 = fieldWeight in 130, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.9740796 = idf(docFreq=112, maxDocs=44421)
               0.0390625 = fieldNorm(doc=130)
         0.05996733 = weight(abstract_txt:natur in 130) [ClassicSimilarity], result of:
           0.05996733 = score(doc=130,freq=1.0), product of:
             0.21663682 = queryWeight, product of:
               1.9923443 = boost
               7.086347 = idf(docFreq=100, maxDocs=44421)
               0.0153442435 = queryNorm
             0.27681044 = fieldWeight in 130, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.086347 = idf(docFreq=100, maxDocs=44421)
               0.0390625 = fieldNorm(doc=130)
         0.060999073 = weight(abstract_txt:nächsten in 130) [ClassicSimilarity], result of:
           0.060999073 = score(doc=130,freq=1.0), product of:
             0.21911459 = queryWeight, product of:
               2.0037055 = boost
               7.1267567 = idf(docFreq=96, maxDocs=44421)
               0.0153442435 = queryNorm
             0.27838892 = fieldWeight in 130, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.1267567 = idf(docFreq=96, maxDocs=44421)
               0.0390625 = fieldNorm(doc=130)
         0.12621081 = weight(abstract_txt:chemie in 130) [ClassicSimilarity], result of:
           0.12621081 = score(doc=130,freq=2.0), product of:
             0.2823862 = queryWeight, product of:
               2.2746782 = boost
               8.090549 = idf(docFreq=36, maxDocs=44421)
               0.0153442435 = queryNorm
             0.44694394 = fieldWeight in 130, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               8.090549 = idf(docFreq=36, maxDocs=44421)
               0.0390625 = fieldNorm(doc=130)
       0.5294118 = coord(9/17)
   

3. Young, J.Z.: Philosophie und das Gehirn (1989) 0.20

   0.19628513 = sum of:
     0.19628513 = product of:
       0.47669244 = sum of:
         0.021447001 = weight(abstract_txt:sich in 5928) [ClassicSimilarity], result of:
           0.021447001 = score(doc=5928,freq=2.0), product of:
             0.05457623 = queryWeight, product of:
               3.5567884 = idf(docFreq=3444, maxDocs=44421)
               0.0153442435 = queryNorm
             0.3929733 = fieldWeight in 5928, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.5567884 = idf(docFreq=3444, maxDocs=44421)
               0.078125 = fieldNorm(doc=5928)
         0.019726824 = weight(abstract_txt:einer in 5928) [ClassicSimilarity], result of:
           0.019726824 = score(doc=5928,freq=1.0), product of:
             0.06503402 = queryWeight, product of:
               1.0916126 = boost
               3.882635 = idf(docFreq=2486, maxDocs=44421)
               0.0153442435 = queryNorm
             0.30333087 = fieldWeight in 5928, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.882635 = idf(docFreq=2486, maxDocs=44421)
               0.078125 = fieldNorm(doc=5928)
         0.020281045 = weight(abstract_txt:sind in 5928) [ClassicSimilarity], result of:
           0.020281045 = score(doc=5928,freq=1.0), product of:
             0.06624646 = queryWeight, product of:
               1.1017412 = boost
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.0153442435 = queryNorm
             0.30614534 = fieldWeight in 5928, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.078125 = fieldNorm(doc=5928)
         0.07746509 = weight(abstract_txt:weise in 5928) [ClassicSimilarity], result of:
           0.07746509 = score(doc=5928,freq=1.0), product of:
             0.16187252 = queryWeight, product of:
               1.7222048 = boost
               6.1255183 = idf(docFreq=263, maxDocs=44421)
               0.0153442435 = queryNorm
             0.47855613 = fieldWeight in 5928, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.1255183 = idf(docFreq=263, maxDocs=44421)
               0.078125 = fieldNorm(doc=5928)
         0.07775395 = weight(abstract_txt:hilfe in 5928) [ClassicSimilarity], result of:
           0.07775395 = score(doc=5928,freq=1.0), product of:
             0.16227469 = queryWeight, product of:
               1.724343 = boost
               6.133123 = idf(docFreq=261, maxDocs=44421)
               0.0153442435 = queryNorm
             0.47915024 = fieldWeight in 5928, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.133123 = idf(docFreq=261, maxDocs=44421)
               0.078125 = fieldNorm(doc=5928)
         0.090405285 = weight(abstract_txt:gehirn in 5928) [ClassicSimilarity], result of:
           0.090405285 = score(doc=5928,freq=1.0), product of:
             0.17943135 = queryWeight, product of:
               1.813207 = boost
               6.449194 = idf(docFreq=190, maxDocs=44421)
               0.0153442435 = queryNorm
             0.5038433 = fieldWeight in 5928, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               6.449194 = idf(docFreq=190, maxDocs=44421)
               0.078125 = fieldNorm(doc=5928)
         0.16961323 = weight(abstract_txt:natur in 5928) [ClassicSimilarity], result of:
           0.16961323 = score(doc=5928,freq=2.0), product of:
             0.21663682 = queryWeight, product of:
               1.9923443 = boost
               7.086347 = idf(docFreq=100, maxDocs=44421)
               0.0153442435 = queryNorm
             0.7829381 = fieldWeight in 5928, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               7.086347 = idf(docFreq=100, maxDocs=44421)
               0.078125 = fieldNorm(doc=5928)
       0.4117647 = coord(7/17)
   

4. Social History and Industrial Classification - SHIC : Sozialgeschichtliche und industrielle Klassifikation - Eine thematische Klassifikation für Museumssammlungen (1999) 0.18

   0.18169649 = sum of:
     0.18169649 = product of:
       0.4412629 = sum of:
         0.010615724 = weight(abstract_txt:sich in 5016) [ClassicSimilarity], result of:
           0.010615724 = score(doc=5016,freq=1.0), product of:
             0.05457623 = queryWeight, product of:
               3.5567884 = idf(docFreq=3444, maxDocs=44421)
               0.0153442435 = queryNorm
             0.19451186 = fieldWeight in 5016, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.5567884 = idf(docFreq=3444, maxDocs=44421)
               0.0546875 = fieldNorm(doc=5016)
         0.01952856 = weight(abstract_txt:einer in 5016) [ClassicSimilarity], result of:
           0.01952856 = score(doc=5016,freq=2.0), product of:
             0.06503402 = queryWeight, product of:
               1.0916126 = boost
               3.882635 = idf(docFreq=2486, maxDocs=44421)
               0.0153442435 = queryNorm
             0.30028224 = fieldWeight in 5016, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.882635 = idf(docFreq=2486, maxDocs=44421)
               0.0546875 = fieldNorm(doc=5016)
         0.028393462 = weight(abstract_txt:sind in 5016) [ClassicSimilarity], result of:
           0.028393462 = score(doc=5016,freq=4.0), product of:
             0.06624646 = queryWeight, product of:
               1.1017412 = boost
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.0153442435 = queryNorm
             0.42860347 = fieldWeight in 5016, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               3.9186604 = idf(docFreq=2398, maxDocs=44421)
               0.0546875 = fieldNorm(doc=5016)
         0.041759323 = weight(abstract_txt:müssen in 5016) [ClassicSimilarity], result of:
           0.041759323 = score(doc=5016,freq=1.0), product of:
             0.13600016 = queryWeight, product of:
               1.5785849 = boost
               5.6146927 = idf(docFreq=439, maxDocs=44421)
               0.0153442435 = queryNorm
             0.3070535 = fieldWeight in 5016, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               5.6146927 = idf(docFreq=439, maxDocs=44421)
               0.0546875 = fieldNorm(doc=5016)
         0.08395427 = weight(abstract_txt:natur in 5016) [ClassicSimilarity], result of:
           0.08395427 = score(doc=5016,freq=1.0), product of:
             0.21663682 = queryWeight, product of:
               1.9923443 = boost
               7.086347 = idf(docFreq=100, maxDocs=44421)
               0.0153442435 = queryNorm
             0.38753462 = fieldWeight in 5016, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.086347 = idf(docFreq=100, maxDocs=44421)
               0.0546875 = fieldNorm(doc=5016)
         0.08539871 = weight(abstract_txt:nächsten in 5016) [ClassicSimilarity], result of:
           0.08539871 = score(doc=5016,freq=1.0), product of:
             0.21911459 = queryWeight, product of:
               2.0037055 = boost
               7.1267567 = idf(docFreq=96, maxDocs=44421)
               0.0153442435 = queryNorm
             0.38974452 = fieldWeight in 5016, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               7.1267567 = idf(docFreq=96, maxDocs=44421)
               0.0546875 = fieldNorm(doc=5016)
         0.17161286 = weight(abstract_txt:gewöhnlich in 5016) [ClassicSimilarity], result of:
           0.17161286 = score(doc=5016,freq=1.0), product of:
             0.34892893 = queryWeight, product of:
               2.528522 = boost
               8.993418 = idf(docFreq=14, maxDocs=44421)
               0.0153442435 = queryNorm
             0.49182755 = fieldWeight in 5016, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               8.993418 = idf(docFreq=14, maxDocs=44421)
               0.0546875 = fieldNorm(doc=5016)
       0.4117647 = coord(7/17)
   

5. Langanke, D.: ¬Das Chemische Zentralblatt im Wandel der Zeiten : der Weg von der gedruckten zur elektronischen Ausgabe (2009) 0.16

   0.15875345 = sum of:
     0.15875345 = product of:
       0.67470217 = sum of:
         0.017157601 = weight(abstract_txt:sich in 3829) [ClassicSimilarity], result of:
           0.017157601 = score(doc=3829,freq=2.0), product of:
             0.05457623 = queryWeight, product of:
               3.5567884 = idf(docFreq=3444, maxDocs=44421)
               0.0153442435 = queryNorm
             0.31437865 = fieldWeight in 3829, product of:
               1.4142135 = tf(freq=2.0), with freq of:
                 2.0 = termFreq=2.0
               3.5567884 = idf(docFreq=3444, maxDocs=44421)
               0.0625 = fieldNorm(doc=3829)
         0.01578146 = weight(abstract_txt:einer in 3829) [ClassicSimilarity], result of:
           0.01578146 = score(doc=3829,freq=1.0), product of:
             0.06503402 = queryWeight, product of:
               1.0916126 = boost
               3.882635 = idf(docFreq=2486, maxDocs=44421)
               0.0153442435 = queryNorm
             0.2426647 = fieldWeight in 3829, product of:
               1.0 = tf(freq=1.0), with freq of:
                 1.0 = termFreq=1.0
               3.882635 = idf(docFreq=2486, maxDocs=44421)
               0.0625 = fieldNorm(doc=3829)
         0.28558245 = weight(abstract_txt:chemie in 3829) [ClassicSimilarity], result of:
           0.28558245 = score(doc=3829,freq=4.0), product of:
             0.2823862 = queryWeight, product of:
               2.2746782 = boost
               8.090549 = idf(docFreq=36, maxDocs=44421)
               0.0153442435 = queryNorm
             1.0113187 = fieldWeight in 3829, product of:
               2.0 = tf(freq=4.0), with freq of:
                 4.0 = termFreq=4.0
               8.090549 = idf(docFreq=36, maxDocs=44421)
               0.0625 = fieldNorm(doc=3829)
         0.35618064 = weight(abstract_txt:chemische in 3829) [ClassicSimilarity], result of:
           0.35618064 = score(doc=3829,freq=3.0), product of:
             0.3601214 = queryWeight, product of:
               2.5687551 = boost
               9.1365185 = idf(docFreq=12, maxDocs=44421)
               0.0153442435 = queryNorm
             0.9890571 = fieldWeight in 3829, product of:
               1.7320508 = tf(freq=3.0), with freq of:
                 3.0 = termFreq=3.0
               9.1365185 = idf(docFreq=12, maxDocs=44421)
               0.0625 = fieldNorm(doc=3829)
       0.23529412 = coord(4/17)