Phycomyces: discovery of the aiming error in the avoidance response.
It has been determined experimentally that, when a stage IVb Phycomycea sporangiophore is subjected to an asymmetric avoidance stimulus (a single barrier), it uses its own net rotation to convert the spatial stimulus to a temporal one. This finding explains the sporangiophore's nonadaptation to a single-barrier stimulus and adaptation to a double-barrier stimulus.
Gamow
R I
RI
Department of Chemical Engineering, University of Colorado, Boulder, Colorado 80309.
Böttger
B
B