A system for determining a position of a lead inside a subject body, comprising: an implantable lead insertable via an insertion trajectory through body tissue, comprising at least one macro electrode contact configured to record electrical signals from tissue surrounding said implantable lead; a control unit connectable to said implantable lead, comprising: a memory, wherein said memory stores one or more indications including a relation between a position in said body tissue and electrical measurements or indications thereof; a control circuitry connected to said at least one macro electrode, wherein said control circuitry is configured to receive electrical signals recorded by said at least one macro-electrode contact and determine a position of said implantable lead and/or said macro electrode contact in said body using said received electrical signals; said control circuitry is configured to: extract spiking signals from said received electrical signals by filtering said received electrical signal; characterized in that said filtering is performed with a filter which extracts electrical signals within a frequency range of 250Hz-7000Hz and extract said SPK signals from said filtered and extracted electrical signals; and in that said control circuitry is further configured to measure values of at least one SPK parameter from said extracted SPK signals; and determine said position of said implantable lead and/or said macro electrode contact in said body using said measured at least one SPK parameter and said stored indications. an implantable lead insertable via an insertion trajectory through body tissue, comprising at least one macro electrode contact configured to record electrical signals from tissue surrounding said implantable lead; a control unit connectable to said implantable lead, comprising: a memory, wherein said memory stores one or more indications including a relation between a position in said body tissue and electrical measurements or indications thereof; a control circuitry connected to said at least one macro electrode, wherein said control circuitry is configured to receive electrical signals recorded by said at least one macro-electrode contact and determine a position of said implantable lead and/or said macro electrode contact in said body using said received electrical signals; said control circuitry is configured to: extract spiking signals from said received electrical signals by filtering said received electrical signal; characterized in that said filtering is performed with a filter which extracts electrical signals within a frequency range of 250Hz-7000Hz and extract said SPK signals from said filtered and extracted electrical signals; and in that said control circuitry is further configured to measure values of at least one SPK parameter from said extracted SPK signals; and determine said position of said implantable lead and/or said macro electrode contact in said body using said measured at least one SPK parameter and said stored indications. a memory, wherein said memory stores one or more indications including a relation between a position in said body tissue and electrical measurements or indications thereof; a control circuitry connected to said at least one macro electrode, wherein said control circuitry is configured to receive electrical signals recorded by said at least one macro-electrode contact and determine a position of said implantable lead and/or said macro electrode contact in said body using said received electrical signals; said control circuitry is configured to: extract spiking signals from said received electrical signals by filtering said received electrical signal; characterized in that said filtering is performed with a filter which extracts electrical signals within a frequency range of 250Hz-7000Hz and extract said SPK signals from said filtered and extracted electrical signals; and in that said control circuitry is further configured to measure values of at least one SPK parameter from said extracted SPK signals; and determine said position of said implantable lead and/or said macro electrode contact in said body using said measured at least one SPK parameter and said stored indications. extract spiking signals from said received electrical signals by filtering said received electrical signal; characterized in that said filtering is performed with a filter which extracts electrical signals within a frequency range of 250Hz-7000Hz and extract said SPK signals from said filtered and extracted electrical signals; and in that said control circuitry is further configured to measure values of at least one SPK parameter from said extracted SPK signals; and determine said position of said implantable lead and/or said macro electrode contact in said body using said measured at least one SPK parameter and said stored indications.